Question about GMC Cars & Trucks
Place a spark plug tester in your number #1 ignition lead and confirm spark.- No spark = possible ignition module failure if spark from coil is present.
Test the fuel line pressure for 12 PSI.for throttle body fuel injection systems on 1987 to 1995 - If reading is low replace fuel pump. If reading is zero lbs check relay.
Compression test for acceptable compression.
If you have spark, fuel and compression, static time the engine and try again to start the vehicle.
PS: If your vehicle is a standard shift you have a clutch safety switch and a column mounted ignition switch that should also be considered.
Here is some more info that may help:
How to Test the Fuel Pump on GM TBI Fuel Systems How To Check Engine Compression GM 3 5L 4 2L
Posted on Aug 12, 2017
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
usually when coil dies the computer shuts off fuel pump to stop you catalytic converter and engine filling up with gas! do you have a eng light on if so scan with:OBD 2 scan to retreve you problem don't get$$ any how do you have SPARK when coil is connected?have you tested with a spark tester tool not spark plug not efficient!!! also have you tested all the in car fuses and under hood fuses with circuit tester tool not pulling and looking!???good place to start!
Posted on Jan 10, 2009
SOURCE: 2001 gmc jimmy not starting
Did they do a fuel pressure pressure test to determine that its fuel pump? And if so what was the p.s.i.?It should be around 55 to 60 p.s.i. a few pounds under 55 p.s.i. Pump needs replaced, Your shop should have chk. this when it was there the first time. Did they by chance chg. the fuel filter, that can hinder it from starting too.
Posted on Feb 14, 2009
Testimonial: "it was the fuel pump thank you"
check the battery an make sure its holding a charge and test the alternator and checkout the starter to make sure its good and not drawing on the battery
Posted on May 16, 2009
Tips for a great answer:
Jan 27, 2016 | Cars & Trucks
Jun 17, 2015 | 1994 GMC Jimmy
Mar 09, 2015 | 1994 Buick Roadmaster
Jan 29, 2013 | Cars & Trucks
Jun 13, 2012 | Cars & Trucks
Jan 20, 2011 | 1993 GMC Sierra
Jun 20, 2009 | GMC Yukon XL Cars & Trucks
Aug 08, 2008 | 2001 GMC Sonoma Extended Cab
33 people viewed this question
Usually answered in minutes!