GM 2.4L Index of Articles

When the MAP Sensor goes bad on your GM 2.4L Quad 4 equipped vehicle, you see one of the following Codes stored in your vehicles... [read more] at:

Testing a Fuel Injector on a 2.4L Quad 4 engine is a pretty easy affair, since they are in plain view and easy to get to (after... [read more] at:

This article will help you to diagnose Diagnostic Trouble Codes: P0135, P0141, P0155, P0161 on your GM 2.2L, 2.4L, 3.1L, 3.4L, 3.8L,... [read more] at:

Troubleshooting a Misfire (P0300, P0301, P0302, P0303, P0304) or Rough Idle Condition on your Quad 4, whether it’s a Chevy, or a... [read more] at:

Testing the Quad 4 (2.4L) GM ignition coils can be a bit of a challenge since they're located under an aluminum cover. Also, in my humble opinion, this ignition system is... [read more]

Overheating is the number one cause of a Blown Head Gasket on a 2.4L Quad 4 equipped Buick (or Chevy, Olds, Pontiac) car. If you... [read more] at:

I remember when the Quad 4 engine first came out and thinking what a pain in the ass diagnosing and repairing it would be. And as time went on, I found out just how right... [read more]

Nothing sucks more than having your car not start. Without your car, how can you get to work? To the grocery store? To get the kids... [read more] at:

Diagnosing a misfiring Quad 4 engine in all of the models that use this engine can be a challenge. This is a case study of one Pontiac Grand Am that was misfiring with only... [read more]

It is possible to test the oxygen sensor on your GM 2.4L Quad 4 vehicle before buying it, and in this article I'll show you how to do... [read more] at: