My mother in law had her car running in the drive and came out and it wasnt running.I checked we got fuel pressure but no spark.Any ideas on what it could be or what i should check.Im thinking either a cam sensor or a crankshaft position sensor.Thanks for any help I did notice while cranking the tach does move up and in my past experiences with gm products then usually means the cranks sensor is working since its reading the crank and moving the tach.But im not sure if that applies to chrysler.Thanks

 

how are u checking for spark? have u done the key trick to see if there is any codes?

 

I pulled the plug and put it in the coil put the plug against metal while someone cranked it and got nothing.I guess i can get my volt meter out and check for power at the coils.As for the key test no i didnt.The check engine light is not on but i did use my scanner and check for codes and it found nothing.

 

yes check for the voltage and ground pulse when cranking on a coil

 

Ive got voltage to the green wire at the coils but i havent been able to get anything from the red wire..Maybe im testing it wrong.

 

to check for ground u put a lead on positive battery cable then the other end on the ground part of the wire.

 

Wow i did do it right.When i did this my volt meter never showed any voltage so i dont have ground.Im assuming this means the computer died.

 

Just a fast run down.I do have fuel pressure,i have crank signal the tac is moving when cranking,the timing belt isnt broke,i have voltage to the green wire on the cop and when i check for ground pulse i have nothing.I hooked one end of voltmeter to the battery the other to the red wire on the plug of the cop and the voltmeter shows nothing for voltage.

 

I guess we are going to order a ECM for it today and see if that fixes it.Ive got fuel,power to the one side of the coil but no ground pulse.The cam sensor has been replaced and so had the crank sensor.ANy other ideas before i put this in.Is there any test i can do with a volt meter with the ecm out of the car?

 

the pcm supplies the ground that u are missing measure with an ohm meter from the coil to the pcm connector to make sure it is not grounded open or short to voltage.