Driveing time to reset ECM
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From: Birmingham Al
Driveing time to reset ECM
I had to replace the EVEP system on my 93 ,hoses .canister the works . What in need is to get the $%^&* ( CHECK ENG ) light to go off . I have reset it and it pops back on .. Anybody know the driving miles to reset the ECM .. I discounted the NEG. side of the Batt. it works for awhile few miles pops back on .. I talked to some shops here ( Houston ) said it my never go off. Said the EVAP is hard to get right ... Thanks..
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First pull the codes to see why. If everything is right the light should not come back on. Once reset after you drive 35mph the relearn process starts. Not sure how long it takes for the fuel mapping to relearn but its not like an OBDII does not have readiness states that have to reset.
Thread Starter
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From: Birmingham Al
First pull the codes to see why. If everything is right the light should not come back on. Once reset after you drive 35mph the relearn process starts. Not sure how long it takes for the fuel mapping to relearn but its not like an OBDII does not have readiness states that have to reset.
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https://www.corvetteforum.com/forums...code-26-a.html
https://www.corvetteactioncenter.com...qdm-fault.html
http://www.corvetteforum.guru/module...post_id=248955
read the above, might help
having a 96 this is all different to me, but I found this
just asking (not insulting), did you do this ?
https://www.corvetteactioncenter.com...qdm-fault.html
http://www.corvetteforum.guru/module...post_id=248955
read the above, might help
having a 96 this is all different to me, but I found this
just asking (not insulting), did you do this ?
Last edited by drcook; Oct 5, 2018 at 09:46 AM.
Thread Starter
Safety Car
Joined: Dec 2009
Posts: 4,363
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From: Birmingham Al
https://www.corvetteforum.com/forums...code-26-a.html
https://www.corvetteactioncenter.com...qdm-fault.html
read the above, might help
https://www.corvetteactioncenter.com...qdm-fault.html
read the above, might help
Thread Starter
Safety Car
Joined: Dec 2009
Posts: 4,363
Likes: 429
From: Birmingham Al
https://www.corvetteforum.com/forums...code-26-a.html
https://www.corvetteactioncenter.com...qdm-fault.html
http://www.corvetteforum.guru/module...post_id=248955
read the above, might help
having a 96 this is all different to me, but I found this
https://www.youtube.com/watch?v=tqdXT0A-QDs
just asking (not insulting), did you do this ?
https://www.corvetteactioncenter.com...qdm-fault.html
http://www.corvetteforum.guru/module...post_id=248955
read the above, might help
having a 96 this is all different to me, but I found this
https://www.youtube.com/watch?v=tqdXT0A-QDs
just asking (not insulting), did you do this ?
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From: moraga ca
Thread Starter
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From: Birmingham Al
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it never hurt anyone to have a bit of knowledge.
replace the line or figure out how to clean it out and if that doesn't fix the issue, then you have knowledge of where to go from there
replace the line or figure out how to clean it out and if that doesn't fix the issue, then you have knowledge of where to go from there
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From: near the thumb in the mitten
93 LT1 ECM really doesn't have a reset procedure. A code 26 relates to a Quad Driver Module Fault. A QDM is similar to a circuit breaker. Shorted Evap , EGR, AIR bypass solenoids or AIR pump relay or related wiring can set code. I would get a FSM You could try unplugging electrical connector from each one, one at a time. see if 26 goes away.
Thread Starter
Safety Car
Joined: Dec 2009
Posts: 4,363
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From: Birmingham Al
93 LT1 ECM really doesn't have a reset procedure. A code 26 relates to a Quad Driver Module Fault. A QDM is similar to a circuit breaker. Shorted Evap , EGR, AIR bypass solenoids or AIR pump relay or related wiring can set code. I would get a FSM You could try unplugging electrical connector from each one, one at a time. see if 26 goes away.
Thread Starter
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Joined: Dec 2009
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From: Birmingham Al
Update : I know a little late been busy working on these old C-4s for other people .. After everything being replaced, needed it anyway , DA DA the plug in the EVAP bypass valve witch comes in for the bottom and very hard to see was not fully lucked in ,can't see it from the top looking down .The manual keep saying there is a plug there I didn't see it finely reached under the valve and felt it and gave it a push and yes I heard in snap in .O- well. Light off Thanks for all your help ..