Crank No Start. AGAIN
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
Just simply unplug the spout and see if spark returns to rule the PCM out. If spark returns and still no start then test the ICM. Here is a good test procedure.
https://easyautodiagnostics.com/ford...module-tests-1
https://easyautodiagnostics.com/ford...module-tests-1
Thread Starter
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Tuned
Joined: Oct 2021
Posts: 297
Likes: 42
I did unplug the spout, truck didn’t start. I also pulled the number 5 spark plug wire, not even a little shock to my finger, tried grousing it too, no spark.
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
OK test the ICM https://easyautodiagnostics.com/ford...module-tests-1
The distributor changing is of concern. If the ICM is OK then we should maybe check the gear on the distributor. Did you have a timing light when you set timing?
The distributor changing is of concern. If the ICM is OK then we should maybe check the gear on the distributor. Did you have a timing light when you set timing?
Thread Starter
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Tuned
Joined: Oct 2021
Posts: 297
Likes: 42
OK test the ICM https://easyautodiagnostics.com/ford...module-tests-1
The distributor changing is of concern. If the ICM is OK then we should maybe check the gear on the distributor. Did you have a timing light when you set timing?
The distributor changing is of concern. If the ICM is OK then we should maybe check the gear on the distributor. Did you have a timing light when you set timing?
Thread Starter
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Tuned
Joined: Oct 2021
Posts: 297
Likes: 42
all my ICM’s are grey, it’s a distributor mounted ICM
the one for my old distributor was grey, a new one I have laying around is grey, and the one in there is gray too. What was that thing you mentioned earlier about the PCM? If the spout is unplugged and spark returns it could be the IDM or the PCM?
the one for my old distributor was grey, a new one I have laying around is grey, and the one in there is gray too. What was that thing you mentioned earlier about the PCM? If the spout is unplugged and spark returns it could be the IDM or the PCM?
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
MY bad. I looked at post 2 for fuel pressure and saw a 1994 truck was posted. Here is the correct procedure for your distributor mounted ICM.
https://easyautodiagnostics.com/ford...module-tests-1
https://easyautodiagnostics.com/ford...module-tests-1
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
Here is a coil test if the ICM test good. https://troubleshootmyvehicle.com/fo...gnition-coil-1
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Thread Starter
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Tuned
Joined: Oct 2021
Posts: 297
Likes: 42
Here is a coil test if the ICM test good. https://troubleshootmyvehicle.com/fo...gnition-coil-1
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
all my ICM’s are grey, it’s a distributor mounted ICM
the one for my old distributor was grey, a new one I have laying around is grey, and the one in there is gray too. What was that thing you mentioned earlier about the PCM? If the spout is unplugged and spark returns it could be the IDM or the PCM?
the one for my old distributor was grey, a new one I have laying around is grey, and the one in there is gray too. What was that thing you mentioned earlier about the PCM? If the spout is unplugged and spark returns it could be the IDM or the PCM?
Thread Starter
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Tuned
Joined: Oct 2021
Posts: 297
Likes: 42
yes I checked had that happen before, one of the first things I checked when I found I had no spark
Thread Starter
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Tuned
Joined: Oct 2021
Posts: 297
Likes: 42
Well it’s gotten too dark and cold out to continue working, so I’ll pick up where I left off tmrrw. I do have some concerns with the grounding test for the ICM, I tested voltage through the ground wire (pin6) to positive battery terminal, and got 7volts, need 10-12v. Then I remember I had left the Key in the on position so I turned it off and checked the ground circuit again, 12v. Doesn’t mention in the testing section for test 2 grounding circuit if the key needs to be left in the on or off position for test 2. Would appreciate some clarification
Lead Driver
Joined: Oct 2016
Posts: 6,185
Likes: 633
From: Houston/Sugar Land
Well it’s gotten too dark and cold out to continue working, so I’ll pick up where I left off tmrrw. I do have some concerns with the grounding test for the ICM, I tested voltage through the ground wire (pin6) to positive battery terminal, and got 7volts, need 10-12v. Then I remember I had left the Key in the on position so I turned it off and checked the ground circuit again, 12v. Doesn’t mention in the testing section for test 2 grounding circuit if the key needs to be left in the on or off position for test 2. Would appreciate some clarification
Thread Starter
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Tuned
Joined: Oct 2021
Posts: 297
Likes: 42
I tested the ignition coil before finishing the ICM tests, I am getting 12v to the IC, and I am getting a switching signal (verified by an LED test light), so that concludes the ICM and PIP are transmitting a signal, but the ignition coil is not firing. Next course of action would be to replace the ignition coil. I did replace the ignition coil about 15months ago with an NGK I bought on rockauto. Would not expect the IC to be the failure point. I will get back to you guys with results after replacing the IC.