Ok, so I'm driving home the other night and all a sudden my Service Engine Soon light kicks on. So I pull over and shut off the car, get out and look around and smell to see if anything is burning or sumthing. All is well, so I get back in and turn on the car and light is off. So I take off down the road and all a sudden it kicks back on. I was like what the hell?!? So I pull over and pop the hood and look and all looks, smells, and seems fine, so I get back in and start her up and the lights off again. Then about 2 miles down the road it kicks on AGAIN! I was like FOCK THIS BULLLSHIEST and finished driving home. When I got into town I shut it off, turned it back on, and cruized around to see if I could get it to kick on...nuthin. I drove around town for an hour and it didnt kick on, so I hit the highway to go out to a friends house. About a mile outta town, BAM there it is again. It kicks on when Im highway drivin but not in town. I starts kickin on about 60 MPH on the highway after a few miles or so. Any idea what the hells wrong with my car?

 

How about pulling the code from the computer? I'm betting on an EGR code being set.

 

one guy had a similar problem on the board, i think

i think he narrowed it down to this one area where he would drive, it would always kick on

i think he concluded it was because of this radio tower or something that he drives by..

 

radio tower or something.....LMAO:sillylol:

 

take a little piece of wire and short pin a to pin b (if your looking at the diag. connector they are the two on the right in the upper row) turn the switch to run and note what codes come out. the service engine light will blink out the codes. first it will blink 12 (1 blink a pause then 2 blinks) three times then it will blink any codes stored the computer three times each. then it will blink 12 again. post the codes someone will know what they mean or you can email me and ill look them up for you.

 

DTP,


First, you'll need to acquire a GM OBD I ECM Diagnostic Trouble Code Retrieval Tool (commonly known as a paper clip to TGO members).

With the engine and ignition turned off, locate the ALDL connector under the dash, just to the right of the steering wheel in the driver's foot well area. There should be a small rectangular cover over the access hole in the lower dash trim.



Insert a tool as described above (paper clip) into the 'A' and 'B' terminals on the ALDL connector:



WITHOUT STARTING the engine, turn the ignition to the "RUN" position. Watch the Malfunction Indicator Lamp (MIL) - it will begin to flash. This is also commonly called the "Service Engine Soon" or "SES" lamp. The first code will flash three times, and will usually be a code '12'. This is encoded by one flash of the lamp, a brief pause, then two successive flashes of the lamp. Each code will repeat three times, so you should see a "Code 12" flash three times. Any other error codes will follow in numerical order, and each code should flash three times. After all codes have been displayed three times, the "Code 12" will again flash three times, then all other codes will follow as described earlier. This cycle will continue until the jumper is removed or the ignition is turned off.

After you have made a note of all error codes, turn off the ignition and remove the jumper immediately. If you forget to remove the jumper and attempt to start the engine with it in place, you could damage the ECM. For this reason you should remove it immediately.

Once you have a note of all error codes, check this file for the decoding:

GM Error Codes.pdf.

(You'll need Adobe Acrobat Reader to view/print the file.)

 

I got it fixed, it turned out to be a soft code. Thanx for the info though!