Question about 1986 Ford F 250
I just bought an 86 f250 2w drive and I LOVE MY TRUCK but as i drive or it idles the glow plug light comes on once in a while and the engine lags for a second and then goes back off. I bought a new Plug relay but the one on the truck was already brand new. i want to fix it myself, anyone got any ideas as to what else might cause it. the truck runs fine except that lag when the light comes on and as long as it's plugged in she starts good too.
The glow plugs heat up your combustion chamber when it is cold and it sounds like your coolant temp sensor is acting up saying that your engine is cold when it is not. Either that, or somewhere in between there is a fault in the wiring giving signals when it shouldn't. The lag is only because your glowplugs draw and immense amount of juice whenever they kick on an that puts a monster load on your alternator. Check your wiring to and from your plugs, your O2 sensor if you have one and any temp sensors you have. Do it quick though because if this problem persists you are going to start burning through alternators and belts- not just glow plugs.
Posted on Mar 11, 2009
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:
Dec 23, 2015 | Dodge Cars & Trucks
May 12, 2014 | 1999 Isuzu Rodeo
Aug 11, 2013 | Cars & Trucks
Sep 19, 2012 | 1983 Chevrolet Silverado
May 25, 2012 | 2005 SsangYong Rexton
Oct 25, 2017 | Ford F-250 Cars & Trucks
May 21, 2009 | 1986 Ford F 350
Jan 27, 2009 | 1984 Mercedes-Benz Mercedes Benz 300 Class
109 people viewed this question
Usually answered in minutes!