GM 2.4L Index of Articles

How To Test The Fuel Injectors (GM 2.4L Quad 4)

How To Test The Fuel Injectors (GM 2.4L Quad 4)

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 taking off a few things, that is). This article will help you to do a simple resistance test of the fuel injectors with...   read more >>

How To Test The MAP Sensor (GM 2.4L Quad 4)

How To Test The MAP Sensor (GM 2.4L Quad 4)

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 memory: P0106, P0107, or P108. The cool thing is that the manifold absolute pressure (MAP) sensor, on your...   read more >>

How To Test The Ignition Coils GM 2.4L Quad 4

How To Test The Ignition Coils  GM 2.4L Quad 4

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 not the most sturdy or well thought-out way to create and deliver Spark to... read more >> (at: easyautodiagnostics.com)

How To Test The Starter Motor (GM 2.4L Quad 4)

How To Test The Starter Motor (GM 2.4L Quad 4)

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 to and from school? Well, this article will help you to troubleshoot the starter motor on your 2.4L GM (Quad 4)...   read more >>

Diagnosing a BAD Ignition Coil Quad 4 Case Study

Diagnosing a BAD Ignition Coil Quad 4 Case Study

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 a P0300 Random Misfire Code stored in the vehicle's computer. This info... read more >> (at: easyautodiagnostics.com)

The Basics Of Crank And Cam Sensors And How To Test Them

The Basics Of Crank And Cam Sensors And How To Test Them

Crankshaft Position (CKP) Sensors and Camshaft Positions (CMP) Sensors used on cars and trucks today come in all sorts of different shapes, sizes and configurations. All this variety might make you think that testing them is difficult and/or... read more >> (at: easyautodiagnostics.com)

How To Test The GM EGR Valve Buick, Chevy, Olds, Pontiac

How To Test The GM EGR Valve Buick, Chevy, Olds, Pontiac

This type of EGR Valve has made the auto repair industry and GM a ton of money over the years, since it's prone to carbon blockage. Well the good news is that this is an EGR Valve and EGR Valve System that is very easy to test and diagnose... and... read more >> (at: easyautodiagnostics.com)

How To Bench Test A Starter Motor (Step by Step)

How To Bench Test A Starter Motor (Step by Step)

Bench Testing The Starter is the most effective way to find out if the Starter Motor is in fact BAD. This is an easy test that you can accomplish yourself without having to take the Starter Motor to AutoZone or O’reilly or Pepboys Auto... read more >> (at: easyautodiagnostics.com)

How To Test The GM 2.4L Throttle Position Sensor (TPS)

How To Test The GM 2.4L  Throttle Position Sensor (TPS)

Troubleshooting and testing the Throttle Position Sensor (TPS) or Diagnostic Trouble Codes: P0121, P0122, P0123 on your 2.4L Quad 4 GM vehicle can be done On the Car and with a simple Multimeter. You won’t need a Scan Tool to follow the steps in... read more >> (at: easyautodiagnostics.com)

How To Test The Ignition Module and Crank Sensor (GM 2.4L)

How To Test The Ignition Module and Crank Sensor (GM 2.4L)

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 that first impression was. Well, in this article I've made diagnosing... read more >> (at: easyautodiagnostics.com)