Questions & Answers for: Volvo S40 rough idle

...ROUGH FOR A MINUTE AND SMOKES, CLEARS UP QUICKLY. FUEL PREASURE 60 PSI AT IDLE. HAS FUEL IN VAC LINE TO REGULATOR. NO CODES,GOOD GAS. REGULATOR REPLACED IN 2004 FOR RECALL. check your mass meter and ...

...didn't make it sound as if it was a big deal. But since then my car has been idleing really rough, and I can't accelerate the same as before and I get a horrible smell when I am driving at ...

...rough idle when in heavy traffic. odb2 computer says its a mass airflow sensor prob.... could this cause these problems? its for a 2000 volvo s40 1.9L turbo If your airflow sensor (meter) is faulty ...

...hard to find unless it happens more often, i think it may be a idle air valve ,this would just make car stall at a light or run a little rough but you would be able to restart and go, hope this

When my 2000 volvo s40 is at a stand still it idles rough, what could it be? It could be a vacuum leak at the intake manifold.Is there a check engine light on? You may simply be experiencing the joys ...

...idle to 1500 rpm the engine runs very rough, after 1500 rpm it is much smoother, spark plugs are darker than they should be, have new coils, plugs, plug leads, airflow meter, temp sensor, throttle ...

rough Idle My Heater stopped working about a week ago. Today my car was driving rough and Idle at a light with the air conditioner on The Idle is very rough.Check engine light came on. The coolant was

...rough Idle. if you haven't had any coolant in your car for a week and you have been driving it you may have blown your head gasket, even though you haven't got 'milkey goo' on your oil dip stick. ...

after timing belt change,i have a rough idle and surging.is the vvt on the intake cam causing this problem? sounds like maybe there is one tooth differential from the original timing position.

I have a'98 Volvo S40 2.0 non turbo, recently it sputter's and idles rough for sometimes 5- 20seconds then suddenly idles smooth. It only run's smooth if allowed to warm up for 5minutes including ...