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What would cause no pulse at the injectors and no service engine soon light workingAlso the injector plugs have positive juice at both terminals with switch in on position.?
Wiki User
∙ 16y ago
No crank/cam sensor signal to ECM/PCM (sensor or ring or ICM or fuse problem) or ECM/PCM internal fault or antitheft immobilizer active.
Wiki User
∙ 16y ago
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95 firebird 3.4 cranks no start no injector pulse no spark?
Check the 95 Firebirds crank position sensor first. If the sensor is bad then the injectors won't turn on and there will be no spark.
Should injectors receive voltage when plymouth neon is being started and if not where should i lok for problem?
Most injectors should show battery voltage IE approx 13V. Where to look if not getting voltage. Immobiliser. Injector relay. Wiring harness. Crankshaft position sensor.
What should you do about getting 14 mpg average on 1999 Pontiac grand am se1?
Check the computer codes. Borrow, rent or buy a code scanner at a local auto parts retailer. You might be having a problem with the O2 sensors, egr valve, throttle position sensor, fuel injector or other sensors that could affect the performance of the injectors. If an injector is sticking you might need to replace it. You can also add a little injector cleaner if that's all that's wrong but stuck injectors are often more difficult than that.
Peugeot expert van injection problem timing good injectors not opening is there relay or fuse on injector wiring what does timing sender read on camshaft gear fuel to pump cranking timing ok?
crankshaft position sensor
How do you unclog a fuel pump?
Depends on the car... If you can see the injectors, you'll need to disconnect the wiring harnesses from the injectors... (there is also usually a boot over the injector). You then need to disconnect the injector from the fuel rail. (careful not to strip the little fitting). You can then use a wrench or injector socket to remove the injector. Make sure you replace the gaskets and seals when installing the new injectors. (might need teflon tape around the pipe fitting where the injector feeds from the fuel rail).
What does cam position sensor do a dodge charger?
The cam position sensor signals the fuel injectors to inject. The crankshaft position sensor signals the spark plugs to fire.
1997 infiniti i30 cylinder 3 misfire?
probably coil pack. do ohm test. also ohm the fuel injector. replace plugs every 105k miles, clean fuel injectors and reset timing, idle, and iac valve position every 30k miles. also clean your egr tube
If a 1989 Jaguar XJ6 will not start but you have a have spark and fuel and pressure is delivered to the injector pipe however no fuel enters any cylinder what could be wrong?
AnswerFuel injectors are not opening. They open by electrical pulse from the ecu. You could have a short, a broken wire, perhaps a bad fuse or the ecu could be defective.You also might have a bad crack sensor on the front of the engine. ECU doesn't know the position of the cylinders therefore no activity to fuel injectors etc...
Why would a 91 integra have power in the on position but no power when you go to start it?
no power in the injectors 95 integra
Where is the throttle position sensor on a gmc safari 2000 van?
The 2000 GMC throttle position sensor can be found on top of the engine. The throttle position sensor will be near the injector fuel pump.
How do I change injectors on a Dodge cummins?
Is the truck a 12 or 24 valve? I have never done a 24 valve but the ingectors are located under the valve cover (Top of engine w/ Cummins logo), and I immagine it would be very simmilar to a 12 valve once you get into them. 12 Valve Injector Install News Summary: These instructions are written to help you replace injectors in your 12 valve cummins. Most of this was taken from TDR members... News Content: Remove Dodge Cummins....etc. plate from valve cover Use an air gun to blow all loose material from the top of the cylinder head. Remove the high pressure fuel line clamps (8mm wrench) Remove the #1 valve cover. Note: this provides room to get the fuel lines out of the way while removing the injector body nut. The first three cylinder fuel lines pass between 1 and 2 valve covers. Remove the large retainer nuts from the injectors ( 17mm wrench or deep well socket, some have used a 15/16" deepwell socket) Remove enough fuel drain bolts and move the manifold out of the way (10 mm wrench). Position fuel lines out of the way for each injector as you go (dont be afraid to bend them a little, but not too much!) to get each injector out use a set of pliers (vise grips are a handy item) to grab the injector, turn and wiggle it out. Some can be difficult. I had to use some force for this step. The injector will turn some. They have a ball like a ratchet uses to hold a socket. (as you will probably notice on the new injectors) If the injectors are hard to remove, put a nut on top of the injector where the fuel line came off and pry up; they come out easily. if this doesn't work you can use the Cummins injector puller and all six will take about 5 minutes. There is a "seal" where the copper washer seats and make sure there is no crud on it so the seal will be good. You have to use a light and crawl up to see down NO.'s 5 & 6. When replacing the injector lightly oil the body insert it in the hole and rotate the injector until the notch on the side of the injector finds the depression in the head, when it is in position, the injector will not rotate any more. note:(wouldn't hurt to leave one old one installed for comparison until several new ones are down the whole way) Put some never seeze on the injector body nut and torque the retainer nut to 44 ft-lbs. Reinstall the lines on the pump fully (if you disconnect them) Finger tighten the high pressure fuel line nuts on the injectors. When you reinstall the injector drain manifold get all the little screws to start significantly before the final tightening. They crossthread easily. Reinstall all the high pressure fuel line clamps Reinstall the fuel drain manifold Crank the engine until there is fuel coming out of all injector lines, then tighten the high pressure fuel nut and start the engine. It may miss and run rough for a few moments, then begin running smoothly.
Car does not acelerate properly when you press the throtal?
Check Throttle Position Sensor. (if you have one) Could also be a misfire so check the plugs, wires, and coils. Check it at night too, so you can see any spark. Could also be a fould injector (if you have injectors) It could be so many more things. Need more info
