Where Is The Gas Filter On A 2002 Gmc Envoy

One of the worst issues that tin happen to your GMC Envoy is a bad fuel filter. When the filter goes bad, information technology can limit the amount of fuel that enters the engine. Without fuel, the vehicle will not run at all. With that in mind, most of the symptoms of a bad fuel filter revolve around the vehicle stalling out.

Bad Fuel Filter Symptoms GMC Envoy

Fuel filters have been making a rearward progression for the final 50 years, literally. For a long time, you'd find it under the hood. It looked like a little pill, and it would be quick and easy to replace. This was in the era of carbureted vehicles.

Things began to change in the 80's. Fuel injection requires higher fuel force per unit area. College fuel pressure meant that a more robust fuel filter would be required. This meant the fuel filter was no longer left nether the hood. It was put in the steel fuel line, between the gas tank and engine bay.

These fuel filters were more reliable, simply they also were tougher to modify. Repairing them means getting nether the vehicle and disconnecting steel fittings. Information technology really yet isn't that difficult to deal with, as long as you give the vehicle a few minutes for the fuel pressure to get down.

The good news is, no matter how old your Envoy is, the symptoms of a bad fuel filter are universal. It doesn't matter if it's in-tank or in-line. And, fuel filters are inexpensive.

Signs of a Bad Fuel Filter: GMC Envoy

GMC Envoy Bad Fuel Filter Diagnosis — Typical Fuel Filter

At that place are physical signs that you can feel when your Envoy'due south fuel filter is clogging. Before taking anything apart, check to see if your engines computer has any problem codes saved in information technology.

The engine may throw a P0087 trouble code. This trouble code detects that the fuel runway/system pressure is too depression. Any problem codes that be could exist a clue. Sometimes when at that place is low fuel pressure level, you may as well get an oxygen sensor related trouble code equally well. The real issue with diagnosing a bad fuel filter is that information technology resembles many other vehicular problems in terms of symptoms.

Hither are the almost common symptoms of a bad fuel filter in your GMC Envoy:

Sputtering Under Load

The only manner that yous are going to know that your Envoy'southward fuel filter may be going out is that it is no longer letting enough fuel through to keep the engine running under a heavy load, or at high-speed. Typically, if you are heading upwardly a colina (or accelerating) the engine may start to experience like it is just running out of steam. That'southward what it feels like with a bad fuel filter.

Now, a bad fuel filter tin also feel a heck of a lot similar a bad catalytic converter. Both weather will make the motor experience like it is running out of wind when you lot hit the gas. A bad catalytic converter will not feel as jarring. It's a smooth lack of ability. If you are unsure, cheque out this article on troubleshooting catalytic converters. If y'all get P0420 or P0430 trouble codes with a scanner, information technology very well may be the catalytic converter causing these symptoms.

Hard to First Engine

1 of the all-time indicators of a clogged fuel filter is going to be that the your Envoy is difficult to start. This because at that place's non enough fuel pressure level to properly atomize the fuel every bit information technology enters the combustion chamber.

If your car is difficult to starting time, a clogged fuel filter would probably not be the place to start looking, especially if you are getting no trouble code for fuel force per unit area or the oxygen sensors.

Instead, we'd recommend taking a expect at the ignition system first. Often it'll exist bad spark plugs, or a bad coil pack.

Engine Not Starting

If the fuel filter has become then contaminated that the minimum amount of fuel has not been permit through it, the engine won't start at all.

At the near basic of levels your GMC Envoy needs three things to start: Air, fuel, and spark. If whatsoever of these things aren't present, the engine won't turn over at all. If there'south been zero alarm that the fuel filter could exist going bad (hesitation, difficulty starting, etc) than a clogged fuel filter might not be the place to kickoff. It could certainly cause the problem though.

Here's a great video on using your eyes to diagnose the fuel filter:

It Could Also be Your Envoy'south Fuel Pump

A fuel pump that is going out is going to experience the same every bit a bad fuel filter. This makes telling if yous take a bad fuel pump vs bad fuel filter very challenging.

How practise y'all tell them apart? A clogged fuel filter volition have high pressure on its input side and low pressure on its output side. They are both going to crusade the same hesitation at high speed and difficulty starting. The only style to truly tell is to place a fuel pressure gauge on both sides of the line and get a reading from both.

If your auto isn't starting at all, and you hear the fuel pump prime number that is usually a good indication that the pump is working to some capacity. Testing your Envoy's fuel pressure level on each side of the pump would be the best way to diagnose this trouble.

A priming fuel pump sounds like a high-pitched whine for a few seconds and can be heard with a sharp engine right afterwards the ignition key is turned, but earlier the starter is engaged.

Conclusion: GMC Envoy Bad Fuel Pump

The symptoms of a bad fuel pump friction match a lot of other common problems that can occur in the GMC Envoy. Testing the filter and pressure level on each side of it are going to be the quickest ways to dominion it out. If there is anything you would like to add, please leave a annotate below. Good luck!