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Old 09-25-2011, 10:40 AM
Shambelous Shambelous is offline
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How do I test PCM

I have a 2001 Exp giving a P0352 code. plug good,COP good. Hodo I test PCM?
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Old 09-25-2011, 11:56 AM
alloro alloro is offline
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For which cylinder did you test the plug and COP?
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Old 09-25-2011, 12:07 PM
Shambelous Shambelous is offline
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#2 which was the indicated bad cylinder with the P0352 error code
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Old 09-25-2011, 12:12 PM
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Just checking, I wasn't intending to insult. You'd be surprise at how many people get the wrong cylinder. Now back to my question, sorry I wasn't specific. What I was really looking for is the physical location of the cylinder you checked. As in which side and how far back from the front. The #2 is the second one back on the passenger side. Is that the one you checked?
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Old 09-25-2011, 12:19 PM
Shambelous Shambelous is offline
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Didnt mean to be a smart ***. Im relatively new to working on engines and just wanted to give good info. I checked the 2nd cylinder back on the passenger side. COP is good and new plug. there is a problem with the connector coming off harness in that the clip mechanism is broken so connector is not locked in.However when I manually held connection tight while the engine was running no improvement was apparent with rough idle.
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Old 09-25-2011, 12:52 PM
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Quote:
Originally Posted by Shambelous View Post
I manually held connection tight while the engine was running no improvement was apparent with rough idle.
To me it sounds like your PCM is good. Based on the P0352 code I'd say you're on track with the harness connector. That code usually means that you have a connection to the COP but it's not a good one. So what you're looking to solve is a high resistance issue.
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Old 09-25-2011, 01:21 PM
Shambelous Shambelous is offline
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Ive got a 1999 crown vic. Can I clip connector of it and sodder to faulty clip on Exp
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Old 09-25-2011, 02:04 PM
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If the clip fits, wear it!
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Old 09-26-2011, 03:54 PM
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Moto Mel Moto Mel is offline
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How is the clip on the #2 injector? Is it on and tight? Be careful when working arount the COPs as they put out a very healthy jolt.
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Old 09-26-2011, 03:54 PM
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