Question about 2002 Nissan Xterra

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Would a bad fuel filter cause the engine light to come on and also make my car run rough

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A bad fuel filter can make the engine run rough, but by itself it won't make the check engine light to come on. It may have caused other symptoms and that's what is making the light come on.

Posted on Jan 01, 2011

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94 cadillac eldorado fuel filter replacement


It could be a fuel problem, but in most cases the rough running would continue at road speed.
You could certainly change the fuel filter and see what happens.
A rough idle but no problems on the road would point to a vac problem or maybe a burnt valve. A fuel or ignition problem would be at most speeds including when you put the engine under a load.
Its possible to have a faulty injector on one cylinder that is bad enough to cause a miss at idle but smooth out on the road, but that is a rare occurance.

Sep 21, 2012 | 1994 Cadillac Eldorado

1 Answer

04 freestar, engine light intermittently flashing, running rough w/loss of power


It's bad enough to have a steady engine light, but to flash...really not good. A flashing engine light means the vehicle is in "limp home mode". Enough to get you somewhere to have it fixed immediately.

All sorts of issues could be the cause here from plugged injectors, plugged fuel filter, bad spark plugs, bad coils. You need to find out what the codes are that are stored in the computer to provide more detailed clues as to what's going on.

Feb 22, 2012 | 2004 Ford Freestar

1 Answer

2006 cobalt 54000 miles I had trouble starting and when it did the check engine light is blinking and it sputters bad even worse when I push the gas pedal


DID YOU REPLACE AIR FILTER AT 25000 MILES FUEL SYSTEM NEED SERVICED AT 25000 MILES ALSO PROBLEM COULD BE STOPPED UP FUEL FILTER OR FAULTY ACCELERATOR PEDAL POSITION SENSOR OR WATER IN GAS CAUSE ENGINE RUN ROUGH. .HAVE VECHICLE SCANNED FIRST. BEFORE BUYING NEW PARTS. HAVE FUEL SYSTEM SERVICE CLEAN FUEL INJECTORS ALSO.

Dec 11, 2010 | 2006 Chevrolet Cobalt

1 Answer

1989 Mercury Sable GS 3.0L runs rough and idles down and stalls


Sounds like you might have a stuck open EGR valve. Is the check engine light on. I would replace the fuel filter if it hasn't been replaced, also check the air filter.

May 31, 2010 | 1989 Mercury Sable

2 Answers

Expedition running rough on acceleration, it's a 5.4L.


running rough means it is misfiring.does it run smoothly without load or at idle?If it does then better check you fuel pressure as the engine needs more fuel under load.

Jan 21, 2010 | 2003 Ford Expedition

1 Answer

2007 G5 Rough running (missing). Doesn't die.


Hi shoemaker.
Fuel filter issues show up in high demand fuel needs such as passing or going up hills. Rarely do they cause rough idle problems.
Is the check engine light on or flashing? A flashing light indicates engine misfire and should be repaired as soon as possible.
So you could have a vacuum leak, a stuck EGR valve, bad ignition coil, worn spark plug, and many other items.
If you don't have a check engine light and haven't done a tune up do one to eliminate a few items and see if that smooths it out.
If you have further questions ask me and I will check and answer you.

KL

Jan 04, 2010 | 2007 Pontiac G5 Gt Coupe

3 Answers

89chevy truck runs roughly


Isn't it fuel injected? More likely:
Pull plug wires one at a time, the one that has no effect isn't firing. Bad plug or wire.

Aug 25, 2009 | 1985 Honda Prelude

2 Answers

99 taurus running rough smells funny light flashing


The reason the check engine light is flashing instead of on steady is because it is missing bad and the car companies did this to tell you to stop the car as soon as possible to prevent damage. That is the only time the light will flash off and on instead of being on steady.
The cause is a little harder to diagnose. It could be a fouled spark plug, a bad plug wire, an injector, stopped up fuel filter. I can't remember if that car has the distributer or the coil packs but you could have a problem there. If you have never changed the spark plugs or fuel filter, it is well over a hundred thousand miles to do so now. They say to change them at one hundred thousand but 50 to 75 thousand is better and you will get better mileage. The fuel filter needs to be changed every 20 thousand miles now days because of all the cheap gas we have to put in the cars.
This is for mechanics or technicians. If no one out there believes me about the mileage on the fuel filter, then take the filter off and see what comes out the back. Looks like black water to me.

Dec 13, 2008 | 1996 Ford Taurus

1 Answer

Rough idle


fuel filters rarley cause idle problems. i would look at the egr valve or possible vaccume leaks.

Aug 24, 2008 | 1999 Buick LeSabre

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