Question about 1998 Volkswagen Jetta

1 Answer

Runs real rough

2.0 L  replaced fuel fltr. plugs,still rough getting worse ???????????

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 6 Answers

Getting worse? Are you having to top up oil regularly? (oil over-filled and damaged hydraulic lifters / Piston rings failed / valve-stem seals decayed) Is the oil-cap gungy and yellow/brown froth? (Head gasket failed / head cracked / piston chamber cracked) If thats all ok, then its possible you have an air leak: Does car cut out when you slow down and stop? Does it hesitate when you accellerate from standstill in normal driving? Can you hear any whistling from the engine? Check for air leaks between the air flow meter to the head. I cant remember if this model has a throttle position sensor, but that might be dirty/faulty. Try spraying an electrical contact cleaner (not WD40. You can get contact cleaner from Maplin etc) into the throttle body (DO NOT SPRAY ANYTHING INTO THE AIR FLOW METER!). Finally, check the HT leads and the Coil pack. Good luck

Posted on Jun 28, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I added fuel additive to my fuel had timing chain done 2 days ago now It won't idle it dies and runs real rough at high RPM's. If you put it into drive gear kills motor.


Sounds like a spark plug or wire issue. Anytime the vehicle starts to skip, die, or (run rough) its usually these minor things. However if that does not help, start looking into your fuel system. Always try cheapest first. Plugs and Wires....Good luck...

Jun 07, 2013 | Cars & Trucks

1 Answer

1988 lincoln mark 7 bill blass running rough. found bad injector on #7 and replaced. checked all plugs and wires, had engine cleaned for carbon. problem not as bad as before, but still a little rough. new...


TPS will make it run bad and worse as time goes by. Fuel regulator will not let it run or it will pour out black smoke on heavy acelleration. I would check all the vacuum lines first, this is the most likely cause of rough idle, besides a tune up. Vacuum leak....

Jun 10, 2011 | Lincoln Mark VII Cars & Trucks

3 Answers

Buick Century 97 runs rough and stutters when cold and gas applie


Your cat should last quite a while now it is replaced. I recommend testing coil packs and module. Change plugs and wires and double check your vacuum hoses.

Aug 14, 2009 | 1997 Buick Century

1 Answer

Runs rough/worse, backfire sputters, smell fuel


make sure all wires are secure on the plugs. Make sure that if you bought the plugs aftermarket, that they are the suggested equipment from the Ford (http://www.car-stuff.com/carparts/fordtaurus20002000motorcraftmisp432154315.html Make sure the plugs (gap) were not damaged during installation. Check the firing order is correct. (1,4,2,5,3,6)

Jun 09, 2009 | 2000 Ford Taurus

1 Answer

The engine won't stay running


Pull the large hose off of the throttle body that come from the air filter and clean all the carbon out of there if is real bad pull the throttle body so you can get to both sides and clean use carb cleaner

Mar 25, 2009 | 1995 Chevrolet Lumina

1 Answer

Engine running real rough


sounds like a bad plug or plugged fuel injector. Try using an additive by Chevron, called Tectron. I have had similar issue and just replaced plugs and added Tectron it seem to resolve the issue. In addition, it could be plug wires too, so you may want to start with the additive, move to the wires and then the plugs. Good Luck

Feb 28, 2009 | 1995 Oldsmobile Cutlass Ciera

3 Answers

Rough idel/no power


0475c6f.jpg As a former Audi technician, I can pretty much guarantee the coil packs are your problem.

Jan 25, 2009 | 2004 Audi A4

1 Answer

2001 xg300 engine runs rough - skips


I had the same car and the same problem.
My case I changed Air Intake
sensor(or call MAS), located right after air filter unit.
Good luck!

Sep 26, 2008 | 2001 Hyundai XG300

Not finding what you are looking for?
1998 Volkswagen Jetta Logo

205 people viewed this question

Ask a Question

Usually answered in minutes!

Top Volkswagen Experts

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

yadayada
yadayada

Level 3 Expert

60792 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

Are you a Volkswagen Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...