Question about 1999 Volkswagen Passat

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2000 VW Passat 1.8t Sport has a miss under acceleration but showing no fault codes has had new plugs, fuel and air filters

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Have u tried changing the nleads

Posted on Sep 07, 2009

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2 Answers

My 2005 vw passat sedan is consuming too much fuel.fuel filters have been changed. could it be a problem from the control board?


Mileage can be affected by a multitude of things. Your driving habits will be the largest contributing factor but if those havent changed I would suggest the following:

Air filter replacement (k&n will get you more mileage)
plugs, wires, ignition coil (basic tune up stuff)
make sure the air pressure in your tires is correct
Make sure your calipers arent dragging on your rotors, this is probably not the case as I have rarely seen all four calipers drag at the same time, but if some are dragging more than others than this will increase wear and tear on your brake system and significantly lower your mileage.

If there are no check engine lights showing then I wouldnt think you have any sensor problems, but your o2 sensor can case your mileage to go down if its bad, but this should trip a trouble code.

I would not trust the on board computer to calculate your mileage either, there are too many variables for it to measure your mileage accurately. I would put a known amount of fuel in the car and reset your pedometer, drive normally and calculate your mileage manually before doing any tuneup. This will give you your mileage as your cars computer may be out of whack.

I average 33 mpg in my 07 passat automatic (by reading the onboard computer) on the highway. In town i get 22-26 depending on how I drive it. The mileage on this computer will fluctuate wildly when going up hills and down hills, during acceleration and braking, its just not an accurate measure of your mileage more like a guestamation by the vehicle.

Apr 08, 2010 | 2005 Volkswagen Passat

2 Answers

1999 VW Passat low idle


replace your fuel filter first. If that does not do it, then try an air-flow meter. (if the check engine light is on it may be an airflow meter.

Jul 10, 2009 | 1999 Volkswagen Passat

1 Answer

1990 VW Fox Fuel/Engine Miss


change air filter.and fuel filter. replace plugs and wires.check tires air pressure.

May 30, 2009 | 1990 Volkswagen Fox

1 Answer

2000 VW Passat misfire


Gasket need replacing and New Spark Plugs (NGK Orginal). May need Coils! If any, replace all at once, My 2000 Passat Wagon runs Great, 1,8T Wagon!

May 15, 2009 | 2000 Volkswagen Passat 4Motion

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VW Polo Map sensor fault code idling pooly


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Missing and stumbling during acceleration


4.2 ltr missing. 2000 truck, f150. Changed plugs, wires. Ran great for 2 weeks. Started again. Changed coils. Got worse. Changed fuel filter, did nothing. Added injector cleaner and fuel cleaner, nothing. Checked EGR, o.k. It is getting worse. Had new gas about the time it all started.

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1 Answer

1999 passat tdi power fault after 2000 rpm no fault codes showing changed both boost valves engine runs fine idles 750 800 rpm


Air mass sensor, almost never shows codes but always makes the vehicle loose power !! cheaper from vw than pattern and more reliable

Dec 21, 2008 | Volkswagen Passat Cars & Trucks

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