SES Light stays on Solid won't flash codes...
Thread Starter
Le Mans Master
Joined: Mar 2001
Posts: 9,464
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From: Modesto CA
SES Light stays on Solid won't flash codes...
On an OBDI Car, I tried to pull the codes (Cuz the car idles WAY high) and all it does is stay on solid, it won't flash codes. Anyone have any ideas? I'm thinking replace the ECM and EEPROM as well as the IAC Valve (just for good measure). Any ideas are appreciated. TIA.
Race Director
Joined: Aug 2000
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Re: SES Light stays on Solid won't flash codes... (TIMSPEED)
Im not sure what to suggest since I think some OBD1 cars cannot diagnosed by jumping the aldl connector.I may be wrong though since I always though we could,but seen a car or two that just wouldnt work.DId you jump the pins in the right place?
It would help if you could hook up a scanner and possibly see whats wrong.
I would try disconnecting the battery for a few minutes and reset the ecm and gofrom there.
Possibly the ecm is going bad or theres a bad ground somewhere,such as a bellhousing wire or etc.
Sorry not much more help.Its expensive to throw parts at the car and never know for sure what it may be.
:)
It would help if you could hook up a scanner and possibly see whats wrong.
I would try disconnecting the battery for a few minutes and reset the ecm and gofrom there.
Possibly the ecm is going bad or theres a bad ground somewhere,such as a bellhousing wire or etc.
Sorry not much more help.Its expensive to throw parts at the car and never know for sure what it may be.
:)
Team Owner
Joined: Sep 2001
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From: Athens AL
C7 of the Year - Unmodified Finalist 2021
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Re: SES Light stays on Solid won't flash codes... (Bill's86Coupe)
If an 87 wont respond to the paper clip, i dont know what the problem is.
If youre doing it right, and its not flashing, i bet the ECM is bad because its supposed to go into diagnostic mode
If youre doing it right, and its not flashing, i bet the ECM is bad because its supposed to go into diagnostic mode
Thread Starter
Le Mans Master
Joined: Mar 2001
Posts: 9,464
Likes: 1
From: Modesto CA
Re: SES Light stays on Solid won't flash codes... (vader86)
It's actually on a 93 Lumina 3.1 V6 MPFI. BUUUT, it's an OBDI system (all basically the same) I suspect a faulty ECM also, because the car runs absolutely fine, it's just the idle that's messed up. (I assume it's got problems in the Idle circuit as well as Diagnostic circuit.)
