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| matts85vet | check engine light comes on but no code stored | ||
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Guru
 
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after driving for 5 minutes, light comes on and stays on. car seemed to run the same.got home to check the codes w/ paperclip but only got code 12
computer is from '89 any ideas? thanks in advance! |
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Posted on: 2014/6/6 2:29
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85 coupe, 383, TPIS Miniram, auto 700R4, 3.75 gears, afr 180 eliminator heads 58cc, 12:1 compression ratio, comp cams 280XFI hydraulic roller cam, 1.65 roller rockers, 52mm throttle body, c5 calipers, hedman elite longtube headers, pypes dual exhaust w/x- |
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| Matatk | Re: check engine light comes on but no code stored | ||
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Usually if it comes on while running I figure it is egr or maf related. The 85 has that crappy burn off module setup. I wonder if you are losing ecm power and that's why there is no stored code?
Any chance you can datalog it while running? |
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Posted on: 2014/6/6 3:02
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| hcbph | Re: check engine light comes on but no code stored | ||
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It's a bit of a longshot, but I've had both the ABS and SES lights come on while driving on my 86. No codes etc and it was frustrating. Found a thread stating if the battery was down or alternator not putting out enough juice, that can happen.
Charged the battery up overnight and lights went out and have not come back. This happened right after taking it out of winter storage. Worth a try. Good luck |
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Posted on: 2014/6/6 12:49
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| matts85vet | Re: check engine light comes on but no code stored | ||
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thanks for the replies!
i will try datalogging it and also check the battery and alt. |
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Posted on: 2014/6/6 21:22
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85 coupe, 383, TPIS Miniram, auto 700R4, 3.75 gears, afr 180 eliminator heads 58cc, 12:1 compression ratio, comp cams 280XFI hydraulic roller cam, 1.65 roller rockers, 52mm throttle body, c5 calipers, hedman elite longtube headers, pypes dual exhaust w/x- |
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| matts85vet | Re: check engine light comes on but no code stored | ||
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checked the battery--it was low- 25% according to the charger but still read 12v. recharged it and no more light!
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Posted on: 2014/6/8 2:22
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85 coupe, 383, TPIS Miniram, auto 700R4, 3.75 gears, afr 180 eliminator heads 58cc, 12:1 compression ratio, comp cams 280XFI hydraulic roller cam, 1.65 roller rockers, 52mm throttle body, c5 calipers, hedman elite longtube headers, pypes dual exhaust w/x- |
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| Matatk | Re: check engine light comes on but no code stored | ||
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Excellent and thanks for the update!
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Posted on: 2014/6/8 2:54
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| hcbph | Re: check engine light comes on but no code stored | ||
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Quote:
Glad the tip worked out. It's frustrating to have a problem without an indication of what's wrong. Congrats on getting it resolved. |
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Posted on: 2014/6/8 13:09
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