One the the worst troubles that can occur to your Jeep Wrangler is a poor fuel filter. As soon as the filter walk bad, it have the right to limit the lot of fuel that enters the engine. Without fuel, the automobile will no run in ~ all. Through that in mind, most of the symptom of a bad fuel filter revolve around the car stalling out.

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Fuel filters have been making a rearward development for the critical 50 years, literally. For a long time, you’d find it under the hood. It looked choose a tiny pill, and it would certainly be quick and easy come replace. This was in the era of carbureted vehicles.

Things began to adjust in the 80’s. Fuel injection requires higher fuel pressure. Greater fuel pressure meant that a more robust fuel filter would be required. This intended the fuel filter to be no much longer left under the hood. It was placed in the steel fuel line, between the gas tank and also engine bay.

These fuel filters were an ext reliable, however they also were tougher to change. Repairing them way getting under the vehicle and disconnecting stole fittings. It really still isn’t that complicated to transaction with, as lengthy as you offer the vehicle a couple of minutes for the fuel pressure to go down.

The an excellent news is, no matter just how old her Wrangler is, the symptom of a poor fuel filter space universal. That doesn’t issue if it’s in-tank or in-line. And, fuel filters room cheap.

Signs of a negative Fuel Filter: Jeep Wrangler

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Typical Fuel Filter

There space physical indicators that you can feel as soon as your Wrangler’s fuel filter is clogging. Prior to taking anything apart, examine to view if her engines computer has any kind of trouble codes conserved in it.

The engine may throw a P0087 problem code. This trouble code detects that the fuel rail/system press is as well low. Any trouble codes that exist can be a clue. Occasionally when there is low fuel pressure, friend may likewise get an oxygen sensor connected trouble password as well. The real issue with diagnosing a poor fuel filter is the it resembles plenty of other vehicular problems in regards to symptoms.

Here room the most typical symptoms of a poor fuel filter in her Jeep Wrangler:

Sputtering Under Load

The only method that you room going to recognize that your Wrangler’s fuel filter might be going out is the it is no much longer letting enough fuel through to keep the engine to run under a hefty load, or in ~ high-speed. Typically, if you room heading increase a hill (or accelerating) the engine may start come feel favor it is simply running the end of steam. That’s what the feels like with a poor fuel filter.

Now, a bad fuel filter can additionally feel a heck of a lot choose a poor catalytic converter. Both problems will do the motor feel favor it is running out of wind as soon as you hit the gas. A poor catalytic converter will certainly not feel together jarring. It’s a smooth lack of power. If you space unsure, check out this short article on troubleshooting catalytic converters. If you acquire P0420 or P0430 problem codes v a scanner, it very well might be the catalytic converter causing these symptoms.

Hard to begin Engine

One of the best indicators of a clogged fuel filter is going come be that the her Wrangler is complicated to start. This because there’s not enough fuel push to properly atomize the fuel together it beginning the combustion chamber.

If your auto is complicated to start, a clogged fuel filter would more than likely not be the ar to start looking, specifically if friend are acquiring no trouble code for fuel pressure or the oxygen sensors.

Instead, we’d recommend taking a look at the ignition system first. Frequently it’ll be negative spark plugs, or a poor coil pack.

Engine not Starting

If the fuel filter has come to be so contaminated the the minimum quantity of fuel has actually not been let v it, the engine won’t begin at all.

At the most straightforward of levels your Jeep Wrangler needs three things to start: Air, fuel, and spark. If any kind of of these points aren’t present, the engine won’t turn over in ~ all. If there’s to be zero warning the the fuel filter can be going bad (hesitation, challenge starting, etc) than a clogged fuel filter can not it is in the place to start. It can certainly cause the problem though.

Here’s a an excellent video on utilizing your eye to diagnose the fuel filter:

It Could also be her Wrangler’s Fuel Pump

A fuel pump that is going the end is walk to feeling the same as a negative fuel filter. This renders telling if you have actually a negative fuel pump vs negative fuel filter very challenging.

How execute you tell castle apart? A clogged fuel filter will have high push on its input side and also low push on its calculation side. They space both going to cause the same hesitation in ~ high rate and difficulty starting. The only way to important tell is to location a fuel press gauge ~ above both political parties of the line and also get a reading from both.

If your vehicle isn’t starting at all, and also you hear the fuel pump prime that is commonly a an excellent indication the the pump is functioning to part capacity. Trial and error your Wrangler’s fuel press on every side that the pump would certainly be the best method to diagnose this problem.

See more: Hi-Point Hidden Serial Number Location, Serial Numbers

A priming fuel pump sounds choose a high-pitched whine because that a few seconds and can it is in heard through a spicy engine ideal after the ignition key is turned, but before the starter is engaged.

Conclusion: Jeep Wrangler poor Fuel Pump

The symptoms of a poor fuel pump match a the majority of other common problems the can take place in the Jeep Wrangler. Testing the filter and pressure on every side of it are going to be the quickest ways to dominion it out. If there is anything friend would like to add, please leaving a comment below. Great luck!