im having a problem getting my 92 camaro to throw trouble codes. put the key in, turn to run it blinks once and stays on, same thing when you plug the jumper in, when you start the car, it goes off, stays off for about 3 minutes and comes back on and stays on, any help would be greatly appreciated, thanks jonathan

 

Read this
https://www.thirdgen.org/service-eng...ht-error-codes

 

henry i have all that in the factory manuals, and haynes, chiltons manuals, it doesnt flash any 12......turn the key on, check engine flashes briefly and then stays on......

 

With all due respect to the administration, that tech article is inaccurate and confusing. The pins of the ALDL are lettered, "A" through "L", not numbered. They begin with "A" in the top right corner. To flash codes you jump pins A&B(top row, far right). From the beginning of GM computer controlled vehicles in 82, through the end of OBD1 in 95, it was always A&B for diagnostic mode.

The behavior of your SES light demonstrates a fault in your diagnostic circuit. At this point I would advise you to connect a scan tool to see if the ECM communicates and check for codes. Check ALDL pin A for continuity to ground.

 

Beats me. Is the car running badly? Maybe check ECM fuse or the connectors to the computer?

 

We did not write that article. Most of our articles are supplied by members.

If you want to make a better document, we'll certainly be interested.

Thanks

 

Thank you JT. I simply don't wish to show this forum any disrespect. I might think about writing an update to that article. Right now I'm working on uploading a complete set of quality wiring diagrams. I'm scanning and uploading the complete factory electrical diagnosis manual. It covers all versions of the 87 Camaro, in great detail and in color. I have a thread going in Electronics and I'm hoping others will upload diagrams for different years. I'd like TGO to have a great library of diagrams.