Question about 1990 Pontiac Grand Prix
One long flash and two short flashed means the ECM is working fine
check and see if the EGR valve is stuck closed when the engine gets hot
If stuck closed the EGR valve needs replacing for it supposed to open when hot
Posted on Mar 12, 2011
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Dec 26, 2014 | 1987 Ford F 150
Jun 15, 2014 | Cars & Trucks
Aug 05, 2013 | 1995 Toyota Camry
Feb 02, 2013 | 1999 Dodge Dakota
Dec 13, 2011 | 1991 Oldsmobile Cutlass Ciera
Sep 02, 2011 | Buick LeSabre Cars & Trucks
Sep 13, 2009 | 1996 Volkswagen Jetta
Aug 22, 2009 | 1998 Chevrolet Blazer
May 11, 2009 | 1989 Oldsmobile Cutlass Ciera
137 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: