Skip to content. When large injectors are fitted to high output engines, low impedance injectors will often give a better idle quality because of this fact. Remove as follows:‪ Steam clean the engine. Alright, with the resistance values of all fuel injectors on paper, let's interpret your results. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Make/Engine Search Departments; Brands; Savings Central; Call Us. Fuel pressure can be raised to increase the rate of fuel flow but this should not exceed 60 psi in most cases. The D-Jet type will fit most types but is not waterproof. A spring returns the pintle to the closed position when no electrical current is flowing. The power ratings discussed above are for each injector. 23. The most common symptom a failed or clogged fuel injector will provoke is a misfire condition. End of story? Assuming a "normal" fuel density, the mass of the fuel in pounds per hour can be worked out by Dividing the cc per minute figure by 10.5. Related articles: Fuel Injector Testing; Fuel Injector Replacement When this occurs they must be replaced. High impedance injectors are the most common found on cars these days. Not so fast! Toyota Supra Turbo (7MGTE) Fuel Injector Clinic Injector Set to fit OEM Fuel Rail: 6x750cc Peak & Ho.. Price: $450.00 . If the injectors are clogged you’ll need to have them cleaned by a professional. 21. The trend lately is to use high impedance types in most production cars. NOTE: This tutorial applies only to the indicated 3.0L V6 equipped vehicles listed in the Applies To: box on the right column. Shop new fuel injectors from DeatschWerks, VENOM, ACDelco, and other top brands! Discussion in '1st Gen. Tacomas (1995-2004)' started by CS_AR, ... @SilverGhost ohmd his our recently and they were really close to stock spec still. Operating range is between 10 and 14 ohms. Qty: Add to Cart - OR - Add to Wish List Add to Compare. Some vehicles with the updated in-tank supply pump won’t maintain a positive pressure during a test drive. Mon-Fri 8am-12am ET / Sat-Sun 9am-10pm ET. CASE 1: All 8 fuel injector resistance values are within specification (11 to 18 Ohms).This is the expected and correct test result and tells you that none are shorted or open internally. Fuel Injectors are an impedance device, you can't really tell how well its working or not without charting its impedance on an oscilloscope or other device, and that would just be the coil, you'd have to do other tests to check the valve/nozzle is operating correctly. A tapered needle sits on a tapered seat. The Bosch fuel injector has a return rate of 1 part per million (PPM), making Bosch the industry benchmark. Green Seal Installed‪ The injectors are installed with a injector clamp and bolt in the cylinder head and are located between the valves of the respective cylinder.‪ Section 35.4.1 Removal of the Injector. Dec 03 2018, 8:41pm. Most high flow injectors are low resistance (2-5 ohms) and use a peak and hold driver to activate them. The Peak current is the amount required to quickly jolt the injector open, and then the lower Hold current rating is used to keep it open for as long as the ECU commands. Data is for general information should be used as such, not guaranteed is 100% correct. Sure enough, #5 fuel injector measured well under specification at 0.2 ohms while the remaining seven injectors measured their normal 0.3 ohms. They should all have a resistance within half of an ohm from each other. 7.3 Powerstroke Injector Specs. When the computer provides the injector with a ground, the circuit is completed and current is allowed to flow through the injector. Test the remaining fuel injectors and as before, write down their ohms value (that your multimeter registered). The main causes of fuel injector wear or failure is contamination of the fuel system. The yellow circles indicate the locations of the fuel injectors in relation to the coil packs on the V6 engine. If they are not in proper condition, the engine will never run well. FLOW SHEETS: Each Custom set is delivered with unique data specs (see photos) Tested Flow Rate for STOCK & CUSTOM: 42.0 lbs/hr @ 58 psi; 440 cc/min @ 4 BAR ; Electrical connector type: Multec II, Delphi (same as stock fit for GM trucks). They should all be about the same ohms. SilverGhost and CS_AR [OP] like this. 7.3 injectors work by getting an electronic signal telling them to let high pressure oil from the HPOP into the injector. Bosch Port Fuel Injectors (PFI) have a robust design and are capable of using Ethanol fuel (E100). Fueling Injector Data and Specs collected from actual bench testing. This means that you need to multiply this rating by the number of injectors that are to be used. These work fine with a good spray pattern but are slightly more prone to deposits plugging the holes. Injector Impedance. We’ve got hundreds of fuel injectors in stock and ready to ship. CASE 1: Your multimeter reports all fuel injector resistances are within specification.This tells you that your 4.2L Ford's fuel injectors are OK. document.write ("Robie" + "Blair");.All Rights Reserved. So I replaced the #3 fuel injector with a re-manufactured part. The primary advantage of low impedance injectors is a shorter triggering time. Disconnect the fuel injector electrical plugs from each of the fuel injectors. Item Condition: All of the Fiveomotorsport fuel injectors are shipped in brand-new condition unless otherwise stated as reconditioned or take-out injectors. We’ve got hundreds of fuel injectors in stock and ready to ship. Here's why: If any one of the fuel injectors were shorted or open internally, the fuel injector would have registered a radically different resistance value on your multimeter. Fuel Injector Size Selection; Fuel Pressure Modification; Fuel Injector Conversion – cc/min to lbs/hr; FAQs; Fuel Injector Application Guide; Contact; Fuel Injector Flow Rates. Home; Symptoms. Each injectors reading should be similar at 11.6 to 12.4 Ohms. So, 322cc divided by 5 = 64hp maximum fuel flow with this injector. Checking the resistance of the injectors I am getting 14.4 to 14.6 ohms. Skip to content. Fuel injector failure may result in … Flow rate: 38lbs/hr 405 cc/min at 45 psi. It is essential that you have injectors large enough to feed your engine at maximum power. These fuel injectors have been carefully tested and meet or exceed the specifications listed below and will function as expected in your high performance street or marine engine. Even though 6 amps may be available to operate the injector, the maximum it is allowed to reach is 2 or 4 amps, depending on the driver's current limit. Often larger OE injectors can be fitted from a different engine. 500cc per minute is approximately equal to 49lbs per hour which is equal to approximately 100hp. Step 2. Most high flow injectors are low resistance (2-5 ohms) and use a peak and hold driver to activate them. Section 35.4 Fuel Injectors ‪ 1. The D-Jetronic type used from 1967 to 1973 or so on Bosch injectors in which the plug fits internally into the injector and the L-Jetronic type in which the plug fits over the injector offreing a waterproof seal. … There are eight fuel injectors on the 7.3-liter diesel engine; one corresponding to each cylinder. Fuel Injectors, TFX™, 48 Lbs./Hr., Bosch-Style, 12.0 Ohms Impedance, Jetronic Plug, 12V, Universal, Set of 8. An Ohm reading is the amount of resistance through a fuel injector. #1 injector = approx 15 ohmsold #3 injector = approx 14 ohmsnew #3 injector = approx 15.So that is the extend to which I have fiddled with this car. Most manufacturers have used both types at one time or another. Section 35.4 Fuel Injectors. They should all be about the same ohms. Most OE injectors are quite small because stock power outputs are usually quite low on production engines and metering is more precise with small injectors for better idle and emissions. Running low impedance injectors without a resistor box will substantially increase the temperature of the transistor driver IC due to the increase in current flow. 1992 Plymouth Grand Voyager LE 3.3L V6 A604/ 41TE 4 speed with about 353,000 miles. Using Ohms's Law we can calculate the current rating (12v/2 ohms = 6 amps). Injector Body Design: Steel and composite plastic . The electrical connection to the control unit is via a Mini-Timer plastic plug. Most domestic OE production EFI systems use an ECU with 12 volt Saturated Circuit drivers. Sealing injectors to the intake manifold usually involves one of two methods. These fuel injectors can be cleaned by pulsing them thousands of times while they are in an ultrasonic cleaner. What would a bad injector test at? These have excellent atomization and a wide spray pattern but are also prone to partial plugging by varnish deposits. Most injectors of all brands built after 1974 use the later type. They are more expensive and complex than saturated circuit drivers, and are not generally used with domestic production ECUs. DTC P0299 Turbo under boost condition This code is not listed in the Chrysler service information for Sprinter, but it is an OBD2/Global code that can be stored in the Sprinter ECM and will show with some scan tools, often in conjunction with P2359. What is the specs on the injectors … These are not compatible with other types. Bad Fuel Injectors Diagnosis: Mitsubishi Lancer. Fuel Injector Spotters Guide and Information: The flow rates shown are at 100% duty cycle (static) and are for gasoline. Choose from one of the following CASES: CASE 1: All of the multimeter resistance values are nearly identical. Although we do show some pressure rating, most injectors are designed to operate 36.25 PSI / 2.5 BAR or 43.5 PSI / 3 BAR - Chrysler and Porsche some times use 55 PSI / 3.7 BAR So 30.6 pounds/hour multiplied by 2.04 gives a horsepower capability of 62.4hp - the same as we got from the cc/minute figure. If your fuel injectors are dirty or are leaking, you'll notice decreased performance, increased fuel consumption, and your engine may not run at all in extreme cases. Fueling Injector Data and Specs collected from actual bench testing. From left to right: original Bosch Jetronic EV1, the tall LS1 style followed by the early LS truck injector, and on the far right the late LS3 EV6 style. Until that time, message our sales email for purchasing details, inquiries, and pricing ! The table below illustrates the different types of fuel injectors available for the Z32. For this test the injector must be removed. New fuel injectors ohm test at approximately 11.4 ohms. A fuel injector is a solonoid that controls fuel delivery. An Ohm reading is the amount of resistance through a fuel injector. This type of driver works by supplying 12 volts to the injectors and the ECU turns it on and off to establish a fuel injector pulse. If one injectors reading is drastically different, it should be replaced. The problem with their volume test with an unrestricted flow is their specifications for volume aren’t high enough. Injector Symptoms; Leaking Fuel Injectors; Clogged Fuel Injectors; The Ethanol Problem; Basic Engine Management; Injector Cleaning. CASE 1: Your multimeter reports all fuel injector resistances are within specification.This tells you that your 4.2L Ford's fuel injectors are OK. View Product. Qty: Add to Cart - OR - Add to Wish List Add to Compare. This high pressure oil forces the injector’s needle tip open, thus “injecting” diesel fuel into the combustion chamber. My suspicions are that I might have just gotten a bad fuel injector or that the wiring at some point along the way is bad. If your fuel injectors are dirty or are leaking, you'll notice decreased performance, increased fuel consumption, and your engine may not run at all in extreme cases. What these figures show is that the 2.5 ohm injectors without a resistor pack run hotter heat the and fuel more than stock injectors. These require the extra kick from the higher current to keep the opening and closing time of the injector stable at the higher fuel flow rate. 1.800.381.2065 . Call Us Today! Drove my 92 Daytona 308K miles with engine never apart, original (single) injector. Injector Symptoms; Leaking Fuel Injectors; Clogged Fuel Injectors; The Ethanol Problem; Basic Engine Management; Injector Cleaning. Home; Symptoms. Mon-Fri 8am-12am ET / Sat-Sun 9am-10pm ET. Fuel Injector specs and flow rates. Note: Deatschwerks injectors are also available (in 270CC, 370CC, 550CC, and 740CC flow rates). Most injector readings should range between 11 and 24 ohms. Black Seal Installed‪ 3. Leaking fuel injectors are often caused by a bad a crack in their body. Fuel injector cleaning can bring your injectors back to original factory specs. … Step 5: Repeat with all injectors. To convert from pounds/hour to horsepower capability, multiply the figure by 2.04. Low impedance injectors are found on high performance and larger injectors. Use the proper flow rate for the intended application. With this type of driver, 12 volts is still delivered to the injector, but due to the its low resistance, the current in the driver circuit is high. They are primarily used in aftermarket high performance systems. CS_AR [OP] Well-Known Member. A fuel injector can cause a miss almost identical to an ignition miss in an engine. Standard® design and manufacture injector styles with matching flow rates, spray patterns, and body styles, including disc and pintle configurations. Here's why: If any one of the fuel injectors were shorted or open internally, the fuel injector would have registered a radically different resistance value on your multimeter. Evidently, the extra-cold morning had tipped the scales in our favor by revealing a shorted injector circuit on #5 fuel injector. The Peak current is the amount required to quickly jolt the injector open, and then the lower Hold current rating is used to keep it open for as long as the ECU commands. If you want to be pedantic, it's the mass of the fuel (not the volume) which is the critical factor. Hello, My name isXXXXX will do my best to assist you. These are very inexpensive, simple, and reliable. For the majority of injectors, there are two types of electrical connections. Very few production engines use an injector flowing more than 500cc/minute or 50lbs./hr. When the solenoid is energized, the core and needle is pulled back, allowing the fuel to discharge. Injector Nozzle: Delphi 3-hole disc, excellent fuel atomization Overall Length: 2-5/16 inches, 58 mm O-ring to o-ring: 1-7/8 inches, 48 mm Body Diameter: 17 mm O-rings: Upper, lower 14.5 mm, Viton material Resistance: 12.5 Ohms (All fuel injector specifications meet or … I am looking to use an Arduino to pulse some Fuel Injectors off a motorcycle and measure the fuel they produce in a given time period. OK, repeat test steps 1 … For performance applications, engines often require much larger injectors to satisfy the increase in fuel flow. Fuel Injector Impedance. A fuel injector is a device used to inject a specified amount of fuel into the intake of an engine as air enters a cylinder, creating the air/fuel mixture. Performance Injector Solutions Specifications: Suitable for Fuels: All Gasoline & Oxygenated Fuels Resistance: 12 OHMS Operating Voltage: 13.8v. Corrosion due to moisture in the fuel also contributes. Specifically, that none are shorted or open internally. This slower time can somewhat decrease the usable operating range of the injector energized by this driver. The Bosch disc type uses the same type of actuation mechanism as the pintle type but replaces the pintle with a flat disc and a plate with tiny holes. The RPM should drop 300 to 400 RPM when the injector is disconnected. Most OE systems maintain a fuel pressure of between 36 and 43.5 psi over the intake manifold pressure. How high? These type of injectors and drivers may also be called current sensing or current limiting. Common Rail injectors make possible fine electronic control over the fuel injection time and quantity, and the higher pressure that the common rail technology makes available provides better fuel atomization. Standard® design and manufacture injector styles with matching flow rates, spray patterns, and body styles, including disc and pintle configurations. MSD makes 50, 72 and 96 lb./hr. Symptoms Of A Bad Fuel Injector. All of these figures are assuming that you are running an average fuel pressure of ~43psi and at 90% duty cycle. Fuel injector performance can be affected by particles as little as 10 microns (0.01mm). This injector family portrait includes four of the five popular GM fuel injectors. So I replaced all three cables. The fuel injector resistance should be within 13.3 to 15.7 Ohms (1991-95) or 10.8 to 13.2 Ohms (1996-2001). I wanted to check them because of the age and mileage. Older type injectors used a square section O-ring slid over the pintle cap to sit against the steel injector body. 22. Turn the Chevy on. View Product. Jump to Latest Follow 1 - 15 of 15 Posts. The Lucas type buries the disc up inside the body to reduce the mass of the assembly for quicker response. 1984 Dodge Daytona Turbo Z 2.2L 5-speed 160K miles. Fuel injectors are normally fed power whenever the ignition key is on. This design has been well proven for over 30 years. 1.800.381.2065 . These use a ball and socket arrangement. All contents are Copyright © 2021 12-13 ohms sounds about right for a good injector. This solved the p0303 (at least for a day or two) but I still was showing p0306. Early Dea… The one missing version is the late truck injector that is the same height as the early truck LS piece but using the EV6 electrical connector. The injector has a stainless steel body, a fuel-resistant plastic connector, martensitic stainless steel internal valve and an electromagnet with a low carbon content stainless steel armature. Placed under the fuel rails, the fuel injectors have a solenoid which opens a valve when engaged to allow pressurized fuel to spray into the combustion chamber. Remove the electrical connector and test between the two pins. All trademarks are ownership of their respective holders. Injector Spray Pattern Test . Unfortunately, several Japanese manufactuers, notably Subaru and Toyota decided to make their own style connectors in the late '80s. All Bosch fuel injectors released to the aftermarket are OE fit, form and function, and are produced to OE specifications. These are 12v high impedance injectors, from some research I have done it seems that they could be controlled with an N-Channel power mosfet as a low side switch. They will range from 12 to 17 ohms. Newer injectors use a 14mm round section O-ring sitting in an isolated groove. Various Applications Write it down and continue testing the other 5 fuel injectors (you'll see why when you interpret the resistance value of all six). Coil Resistance: 12 Ohms / High Impedance / High-Z (No ECM driver modifications required) Gain: 0.11ms/mg, Offset: 0.055ms, Turn on time: 1.14ms @ 14VDC, Turn off time: 0.85ms @ 600KPa so I punched the Lucas numbers into the spreadsheet and came out with somewhat similar numbers (for … Step 1. Fuel Injector Impedance. As they are redrills of stock injectors, they all look like either P2 270CC or 370CC injectors. Injectors are normally cooled by fuel. Still ran like new when the chassis was rusted out. The best way to determine impedance is to put a digital ohmmeter across the two electrical connections and see what it reads. Data is for general information should be used as such, not guaranteed is 100% correct. Injectors are normally cooled by fuel. Raising the pressure to extreme levels is very hard on the pump and can lead to leaks or failures in the plumbing and injectors themselves. With the 306 I checked the spark plug cables and found out that the boot had been ripped and the spark was arcing out. The computer controls the negative, or ground side, of the circuit. FREE SHIPPING on Orders Over $99! 24. Some new engines use side inlet injectors, notably Subaru, Nissan and some Ford/Mazda engines. You will need a fuel injector testor, about a $100, and a fuel pressure guage, about a $100, to flow test the injectors. I am repairing the fuel rail on my 1992 Plymouth Grand Voyager with the 3.3 Liter V6. I am repairing the fuel rail on my 1992 Plymouth Grand Voyager with the 3.3 Liter V6. If you plan to fit used injectors to a performance engine, always have them flow and leak tested first. We hope to soon allow you to shop directly from our site with the addition of this click to shop feature. The Lucas types typically have a very narrow spray pattern which can affect idle and throttle response in some cases. There are some exceptions to this, notably the Bosch 803 injector used on the Porsche 944 turbo which is 4.7 ohms. Does anyone have some fuel injectors they can Ohm test for a question? Fuel injectors should be tested cold unless otherwise specified, temperature variances will change the readings. Harness Adapter: ASNU90/HA010 Nissan - Asian This injector is designed as a direct Performance for an original Denso Nissan injector. The fuel injector in a Chevy is responsible for metering the fuel that enters the intake manifold, and ultimately the engine. We are in the process of building our Fuel Injector Development online market. You can find this tutorial in Spanish here: Cómo Probar Los Inyectores (1998-2000 3.0L Dodge/Plymouth Mini-Van) (at: autotecnico-online.com). FUEL INJECTORS 2.52” .36”.25” ACCEL Performance Fuel Injectors provide precise control of fuel delivery ... Technical data and specifications. On your particular Ford vehicle, it may be different but don't worry about this too much for now. These use an oval shaped plug. You will need a fuel injector testor, about a $100, and a fuel pressure guage, about a $100, to flow test the injectors. Can anyone tell me what the fuel injector resistant ohms specs should be. The later type uses a rigid fuel rail to hold the injectors down to the manifold as well as seal to the O-rings. Is it a good injector 12-13+ ohms? Speedytech7, Apr 28, 2019 #5. If you suspect that you have a clogged fuel injector, which a resistance test won't find, take a look at the following section: How To Find the BAD Or Clogged Fuel Injector. Part Number: TFS-89048 Not Yet Reviewed This is substantial current flow and a Saturated Injector cannot handle it. VerticalScope Inc., 111 Peter, Suite 901, Toronto, Ontario, M5V 2H1, Canada. Afterwards the injectors should be flow tested for spray patterns. Step 4 – Test the fuel pump. types for racing which are popular. Copper Washer‪ 2. The drivers also come in two values; 4 amp peak/1 amp hold, and 2 amp peak/0.5 amp hold.. A spring returns the pintle to the closed position when no electrical current is flowing. GDI (Gasoline Direct Injection) Bosch Gasoline Direct Injection (GDI) provides the basis for a cleaner and more economical engine generation. Call Us Today! Test the remaining fuel injectors and as before, write down their ohms value (that your multimeter registered). 1991-up 3000GT VR-4/ Dodge Stealth R/T TT, 1989-up Eclipse/Laser/Talon Turbo/non-turbo. Check injector resistance, should be less than 1 ohm and greater than zero ohms (zero ohm meter leads before test). The Bosch fuel injector has a return rate of 1 part per million (PPM), making Bosch the industry benchmark. The Z32 uses high-impedence, side-feed fuel injectors. For this injector, that gives a mass flow of 30.6 pounds/hour. Fuel transfer from the fuel rails was done with barb fittings and hose on early injectors as shown on the left above or small or large O-rings as shown above on the right. That depends on the air/fuel ratio that is used, but a good rule of thumb is to divide this flow figure by 5 to get a hp capability. 2008 Chevy Silverado 1500 5.3 vortec Re: Fuel injector resistant ohm specs. Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Make/Engine Search Departments; Brands; Savings Central; Call Us. The sensor should ohm between 600-1200 ohms across its two wires. I have looked through the Chrysler shop manual and can not find this. Inside the injector, there is a coil of wire. It takes 4 times the fuel pressure to double fuel flow. Set the multimeter to measure ohms. The following flow rates and numbers are not from any list. Conversely, a downfall of a Saturated Circuit driver is that it has a slower response time (and closing time) than a peak and hold type. I am closing in on 327,000 miles. If you are having trouble, you'll need to know how to troubleshoot Chevy fuel injector problems. Conclusions. Look at the injectors for any leaks in the body of the injectors or at the O-ring, where they are plugged into the fuel rail. For a better experience, please enable JavaScript in your browser before proceeding. If there are no leaks, disconnect each injector one at a time and make note of how much it affects the RPM. Inside the injector, there is a coil of wire. Remove the electrical connector and test between the two pins. If your reading is different, don't panic. If you are having trouble, you'll need to know how to troubleshoot Chevy fuel injector problems. The solenoid in the injectors is between 11 and 13 ohms, so it will take just over an amp … Specifically, that none are shorted or open internally. Home » Knowledge Base » Fuel Injector Flow Rates. Apr 28, 2019 at 2:23 PM #6 #6. They have much lower resistance, typically around 2-5 ohms. So, how much power is this injector good for? Service includes before/after flow testing, ultrasonic cleaning, backflush, all new o-rings and internal filters. A fuel injector is a electrical-mechanical valve that uses magnetic field from its coil winding when current is applied and pulls the metal pintle back away from it's seat to allow fuel to flow. Fuel injectors vary widely by a car's make and model. FREE SHIPPING on Orders Over $99! Connect the red and black multimeter leads to each side of the terminal end of the fuel injector. Sometimes aftermarket ones must be used. In general, if an injector has a high resistance specification (12-16 ohms) the ECU uses a 12 volt saturated circuit driver to control it. Injector Impedance. This article primarily concerns itself with those found, of course, in the Z32. What these figures show is that the 2.5 ohm injectors without a resistor pack run hotter heat the and fuel more than stock injectors. So, if you were using the Impulse RS 322cc injectors in a 4 cylinder engine (with one injector per cylinder) the max power that the injectors could deliver fuel for would be about 249.6hp. A fuel injector is a electrical-mechanical valve that uses magnetic field from its coil winding when current is applied and pulls the metal pintle back away from it's seat to allow fuel to flow. Resistance: 12.5 Ohms Static Flow Rate: 300cc/min, 28.5lbs/hr Fuel Nozzle: Convex, 4-hole - Maximum atomization O-rings: Viton, 14.5 mm, upper and lower . Alright, with the resistance values of all fuel injectors on paper, let's interpret your results. Conclusions. Either colored lead can be connected to either side of the terminal. These require the extra kick from the higher current to keep the opening and closing time of the injector stable at the higher fuel flow rate. The primary advantage of high impedance injectors is the fact that less heat is generated in the drive circuit and often no external resistors are used. Email This Page. Idle the engine. The Rochester division of GM makes the ball type injector for OE applications as well as the larger flow race types for MSD. Fuel Injector Cleaning Fuel Injector Cleaning; Fuel Pump Testing can tell you exactly how your pump is performing. An injector operating on a saturated circuit driver typically has a reaction time of 2 milliseconds while a peak and hold driver typically responds in 1.5 ms. Figure 3. Toyota Supra Turbo (7MGTE) Fuel Injector Clinic Injector Set to fit OEM Fuel Rail: 6x750cc Peak & Ho.. Price: $450.00 . Checking the resistance of the injectors I am getting 14.4 to 14.6 ohms. Technical Specifications Mechanical Data System pressureMax. With the new injector and the original FICM in place, the engine ran perfectly. Running low impedance injectors without a resistor box will substantially increase the temperature of the transistor driver IC due to the increase in current flow. When they are dirty but not yet clogged, you may be able to clean them with a good fuel injector cleaner. Thank you. This means that the current flow in the driver and injector circuit stays low keeping the components nice and cool for long life. You can ohm check them with an ohm meter to see if one or more has shorted windings. Choose from one of the following CASES: CASE 1: All of the multimeter resistance values are nearly identical. This is the most common type and still the best. A fuel injector is a solonoid that controls fuel delivery. Connector: Bosch Mini Timer. All Bosch fuel injectors released to the aftermarket are OE fit, form and function, and are produced to OE specifications. These are numbers from actual flow test results here at the injector-rehab. If the test shows high resistance or an open circuit the injector needs replacement. Shop new fuel injectors from DeatschWerks, VENOM, ACDelco, and other top brands! A forum community dedicated to Dodge, Jeep, Ram, Chrysler, AMC owners and enthusiasts.