Chrysler Repair Questions? Ask a Mechanic for Answers ASAP
Hello and welcome! My name is XXXXX XXXXX I can assist you with your question.
Please allow me to ask a few questions in order to better help resolve your concern.
Does the engine have injector pulse when cranking it over?
Have you checked for any codes stored in the computer?
Yes the injector has pulse,i hook up snap scanner and no communication w/ pcm
Thank you for that information
How did you check for injector pulse?
And what were the results?
unplug connector and put injector tester on it,and light was blinking
The reason I ask is because of the PCM is not communicating, it will not be able to pulse the injectors open and closed while cranking the engine over
what do you suggest I should ck next
It depends on what we find when running these tests
That is why it is so important we get on the same page
okhow do we get on the page
Double check injector pulse
If you have injector pulse, then try using another scanner
if you dont have injector pulse, then we check to see if the computer is "awake" with the key on
if not, we check all powers and grounds going into the PCM
If so, then we check the inputs to the computer
such as the crank signal, cam sensor and sync
Let me ask you this
do you have a reference voltage going to the cam and crank sensor with the key on?
I printed out a schematic digram from alldata, and ck all the wires ground ,powers, crank sensor has voltage reference
pcm has 12v, and crank sensor has 5v
Cam and crank sensors should have 8 volts
so the voltage low? and I cant find the cam sensor or the ignition coil
I would double check all three wires going to the crank sensor
One of them should have 8 volts going to it with the key on
This is the reference voltage coming from the computer to the sensor
If this checks out good, then the PCM is good
Your next step would be to verify that the valve timing is good
If so, I would suspect a bad camshaft position sensor or bad ignition coil
They are both located inside the distributor assembly on this vehicle
ok I will double ck everything and thank-you much.
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