breif engine service light

[jefftrexler]

The other day as I started up my '91 Q45 with no problem at all. I goto pull out of a parking lot and I notice my car starting to idle rough....REALLY rough! I looked down at the dash and the 'check engine' light was on. I started thinkin, "oh great....this things toast!" It only acted this way for about 15 seconds and then the idle went smooth and the light turned off. Is this something I should be concerned about, or just dismiss it as the computer just having a brain-fart? Really spooked me out there! Any help or advice would be greatly appreciated. Thanks!!!

[DAEDALUS]

Sounds a lot like a MAF sensor problem, though it could be anything. The code is still stored until you start the car another 50 (?) times. Check the connector, and check the code.

[DougQ45]

Daedalus is right. Activiation code gets stored for the next 50 starts. Sounds like a code 51, fuel injection. Pull the ECM and check. Mine has done it 3 or 4 times a year, and always returns to normal.

[Sopdadope]

Maybe it's all those neon lights driving your electrical system crazy?!