Service Engine Soon Light

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Service Engine Soon Light

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Blazer Forum >> Mechanical & Maintenance >> General Tech Help >> Full Size K5 Tech >> Service Engine Soon Light

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Service Engine Soon Light - 1/1/2006 8:18:17 PM

amello1

Posts: 4
Joined: 12/31/2005
Status: offline

I have recently bought a 1988 K-5 for my son. We were driving around the other day and the 'Service Engine Soon ' came on very dim and after awhile it got brighter and brighter until it was bright. When we shut off the ignition switch the 'light' stayed off for about 5 miles and repeated (dim light to bright).
When we got home I tried to read the trouble codes by jumpering the A and B terminals on the ALDL connecter. It started by blinking code 12 and 24 then the light started to fade away to nothing as the other codes came through. When I tried it again could barely read code 12 before the light dimmed away. I am trying to get a better wiring diagram. I think I have a bad ground someware. Has any one had this problem?

Post #: 1

RE: Service Engine Soon Light - 1/1/2006 11:14:29 PM

Hanr3

Wheels & Tire Moderator
Posts: 3523
Joined: 5/11/2005
Status: offline

Never had that problem, and never heard of it before either. Seems strange to say the least. Keep us posted.

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(in reply to amello1)

Post #: 2