Question about 1999 Volkswagen Passat

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Replaced plugs, fuel filter and air filter to see if sluggish acceleration would fade after occasional shifting. What could my issue be now?

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  • nancy22_5 Sep 11, 2008

    had problems with turbo being lazy on acceleration, checked boost pressure control valve which had dodgy connection, replaced plugs and fuel filter. slight improvement but still not perfect. what next?

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Car has no power makes funny nose like it wants to die

Posted on Sep 03, 2008

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2 Answers

Stalling and skipping rav 4


going to ask a scary question, no insult intended. have you checked the OIL when was it last changed. Air filter fuel injected system uses air filter was it changed last... fuel filter, not sure how many it has, may want to have that checked. spark plugs have them checked look at them, they maybe fowled. so here is a link that address the issue.....

http://alvinalexander.com/news/toyota-rav4-throttle-lag-hesitation-stalls-acceleration-2006

air flow mass sensor is flowed up dirt gets in and causes it to respond very slow... good luck..........

Oct 03, 2014 | Cars & Trucks

1 Answer

Mercedes clk 200 petrol 1999.guys I really need help quickly please. Only brought the car yesterday and already it's a goner. Driving home it was very sluggish. this morning again sluggish....


If it runs good in park or at idle but is slugish when you try to accelerate it is likely a fuel issue. I would start with a new fuel filter. When you press on the gas you need more fuel pressure and if the pump cant get more through the clogged filter you will get that. If it runs bad even at idle it is likely a spark issue and needs new plugs and wires. I would give it a good tune up - oil change, spark plugs (platinum or iridium), plug wires, air filter, fuel filter, PCV Valve and see how she runs after that.

Aug 11, 2013 | Cars & Trucks

1 Answer

Toyota sluggish


I always advise people to start with the cheapest solution and work towards more expensive things in situations like this. First thing I do when a car becomes sluggish is replace spark plugs, wires, air filter, fuel filter, and change the oil. that should fix your problems I don't think you have any major issues

Jul 16, 2012 | Cars & Trucks

2 Answers

Won't accelerate faster than 55mph. Loses pwr..


When you losing speed, do you lose RPM? This is important. 1- If you don't lose RPM then you have a problem with your torque converter. 2- If you lose RPM then you have a problem with fuel air mixture and this is controlled by ECM. Usually ECM is not a problem, but the problem is coming from other sensors contributing fuel: air mixture control like Air mass flow control ans Oxygen Sensor besides the throttle body valve is gummed up and need a through clean. So try to address the last one first then follow in reverse order if the case is in # 2. Good luck.

Oct 04, 2009 | 1999 Mazda Protege

1 Answer

Sluggish and stalling


Could be many things but check the simple and cheap stuff first: fuel filter, air filter, O2 sensor, or spark plugs. If that's not it the more expensive problem would be: alternator, gas pump, or maybe even something with the transmission

Aug 06, 2009 | 2006 Ford Expedition

1 Answer

Occasionally, the car will not accelerate during a turn no matter how hard I push on the gas peddle. What could be the trouble?


There are many possible causes for this kind of problem.

1. Clogged fuel filter - just change your fuel filter
2. Dirty air filter - replace it or just clean it with compressed air
3. faulty throttle position sensor - this will be the extreme case but usually its just the fuel filter or air filter.
4. Used up fuel pump - its also possible that you fuel pump has given up
5. Bad spark plugs - check the spark plugs, see if they are still okay

Jun 27, 2009 | 2003 Nissan Altima

1 Answer

1996 MERCURY GRAND MARQUIS WITH OCCASIONAL SLUGGISHNESS ON ACCELERATION AND SEEMS LIKE IT MAY BE USING MORE GAS THAN USUAL. HAS BEEN WELL TAKEN CARE OF, REG. OIL CHANGES, NEW FUEL FILTER 2 YRS AGO-DR


I would use 10W40 in the 96 and 5W20 or 30 in the 2002.

For the 96 with sluggishness, you need to gently clean the MAF sensor wires with carb cleaner and a toothbrush. It is in the air intake tube. After cleaning, disconnect the battery for 1/2 hour, then reconnect so the computer can relearn the clean sensor. Drive for 10 miles, it will run rough until it relearns.


Section 03-14: Engine Controls, Electronic 1996 Town Car, Crown Victoria, Grand Marquis Workshop Manual
DESCRIPTION AND OPERATION Mass Air Flow (MAF) Sensor The mass air flow sensor (MAF sensor) (12B579):
  • is mounted on the corner of the engine air cleaner (ACL) (9600).
  • uses a hot wire sensing element to measure the amount of air entering the engine; air passing over the hot wire causes it to cool.
  • sends out an analog voltage signal to the PCM (12A650) to determine the intake air mass. The PCM will then calculate the required fuel injector pulse width to provide the desired air/fuel ratio.
The mass air flow sensor hot wire sensing element and housing are calibrated as a unit and must be serviced as a complete assembly.

Mass Air Flow (MAF) Sensor

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May 27, 2009 | 1996 Mercury Grand Marquis

1 Answer

Poor acceleration terrible mpg


go a step ahead, it may not be the issue, but it will help.. replace the spark plugs and coils.

May 20, 2009 | 1993 Chevrolet K1500

1 Answer

1985 Toyota Camry sluggish acceleration


check the fuel filter and when was the last time you had a tranny service done and a tune up also check the drivebelt

Feb 06, 2009 | 1985 Toyota Pickup

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