BAD ECM?

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Jun 10, 2020 | 05:31 AM

#31

matt167

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It still should not display 111 if there is a trouble code right? KOEO it displayed 111 and 112, and then KOER it just went crazy.. The low power to cylinder codes could have been from the ignition box especially if it was faulty.

I've used this OTC scanner on my truck before, and many other similar trucks and it's always worked but not now. there being a glitch means to me something is wrong because it does have a glitch in the diagnostic signal

Jun 10, 2020 | 06:17 AM

#32

torq'ta 5 8

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From: N.W. Alabama

may not help you at all, but have you seen this, it walks you through testing ECM
Fuel Injection Technical Library » No Codes?

Jun 10, 2020 | 08:46 AM

#33

My4Fordtrucks

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Quote:

Originally Posted by R&RFord

A California emissions vehicle was sold outside of California.

I no longer have the truck to take a picture of the emissions label but it was a Federal emissions truck.

Quote:

Originally Posted by matt167

I've used this OTC scanner on my truck before, and many other similar trucks and it's always worked but not now. there being a glitch means to me something is wrong because it does have a glitch in the diagnostic signal

I skimmed through the thread but did not see where you had removed the computer to look inside for damage. Maybe it’s time to do that?

Jun 10, 2020 | 04:33 PM

#34

matt167

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Quote:

Originally Posted by My4Fordtrucks

I no longer have the truck to take a picture of the emissions label but it was a Federal emissions truck.

I skimmed through the thread but did not see where you had removed the computer to look inside for damage. Maybe it’s time to do that?

Have not had time. I will some time soon. It's my daily driver, but I do have my Corvette on the road now legally so I can afford a little down time,

I'm also going to check it for dirty power ( A/C current ). I don't get flickering lights but dirty power could explain ghost codes AND a dead CDI box

Jun 22, 2020 | 05:21 PM

#35

matt167

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Now I got codes to flash out through my clicker box but it still picks up " No Data ". But I counted code 539, which ok is A/C left on ( I left it on accidentally ) and Code 822?.. This is the machine just beeping the flashes that it counts, so it's accurate since IM counting them

I can feel the truck cut out from time to time, I expected to pull an ignition code.
This is getting weird.. Corvette runs great. It gets better MPG while being way more fun to drive.. BUT the A/C is inop

Jun 22, 2020 | 05:43 PM

#36

1TonBasecamp

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From: San Jose, CA

Never heard of a code (or a need for one for that matter) for leaving the air-conditioning on! Or does AC mean something else in the world of ECM's?

Paul

Jun 22, 2020 | 05:47 PM

#37

matt167

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Nope, it's a code in the books for " Operator Error, A/C circuit left on ".. A/C needs to be off for KOER test functions, but it evidently trips the code in a KOEO test. It's meaningless