Question about 1989 Chevrolet Silverado 2500
Check engine like is it red or yellow? if it's yellow it could be a misfiring spark plug, or a lazy 02 sensor, that means you drive the truck till it gets in closed loop then the 02 sensor is connected to fuel trim and is not changing fast enough causing the light to come on. Since the 02 sensor is bypassed until engine is warm this could be your issue, it could also be a spark plug wire or even the heater on the 02 sensor, since it's a 89 it has a sensor on each side of the engine and one after the cat, if there is a spark plug problem if the check engine light starts flashing it means a catastrophic misfire that will destroy the cat so it is a fuel or spark problem.
Posted on Jul 14, 2010
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.
the service is completely free 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:
Mar 09, 2013 | Cars & Trucks
Nov 03, 2011 | 1999 Ford Contour
Oct 01, 2010 | 2006 Volkswagen New Beetle
Nov 07, 2009 | 1992 Mazda MX-5
Jul 12, 2009 | 1994 Toyota 4Runner
May 27, 2009 | 2002 Dodge Durango
Mar 18, 2009 | 1991 Saab 900
Jan 06, 2009 | 2005 Nissan Frontier
254 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: