Question about 1995 Volvo 850

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Volvo 850 idling irraticaly

The car starts 1st time every time, and is fine for around 30 seconds, then the revs start fluctuating from 800 to  2000rpm

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  • smiley_1988 Dec 02, 2008

    hi and thanks for the quick reply. i have checked everything you have mentioned, but i didnt renew them. do you think this will help?




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  • 261 Answers

This indicates a vacum leak near the intake manifold carefully check all hoses including the hose which runs from the air filter to the throttle body

Posted on Dec 02, 2008

  • Rabindra Robinson Dec 03, 2008

    no ! while the engine is idling tap on the mass air flow sensor and see if that changes any thing but make sure that there is no cracks or breaks on the duct between the air flow meter and the throttle!!

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1 Answer

What is causing recurrent DTC P0102?


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1997 Volvo 850- It doesn't get gas when it idles- Current Problem My original problem is the same as the one described below. My husband use the same fix described below and it worked. "Hi: We own a 1997...


Hi!

Sounds to me like the engine in fact is getting gas when idleing, but not getting enough air. Therefore my 2 cents are on you IACV (Idle Air Controller Valve). It's a small steel cylinder suspended in a rubber piece on the front of your throttle body, and its job is to supply the engine with air when idleing. This is a necessity since the throttle body valve is closed when the gas pedal isn't pressed. Take out the IACV and clean it thoroughly, also make sure that the air going from it is not hindered by any gunk or deposits on its way to the intake manifold.
(You could have someone hold their hand on the IACV when you take your foot of the gas pedal. If nothing happens it's probably dead or stuck. If something does happen there is still a chance that the air is hindered somewhere).

Good luck, let us know if this didn't help!

Aug 09, 2009 | 1997 Volvo 850

1 Answer

91 volvo 240 - keeps stalling out, shakes a lot when idling


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Oct 13, 2008 | 1995 Volvo 850

1 Answer

High RPM when starting


Possible vacuum leak on one of the hoses, use a can of carb cleaner and spray the hoses and around the intake to locate a possible leak, the engine will rev up if you hit one.

Aug 23, 2008 | 1996 Volvo 850

1 Answer

Volvo 850 wagon (nonturbo)


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Jul 20, 2008 | 1994 Volvo 850

2 Answers

87 RX 7


rx7`s should rev to 3000 when started cold then it should settle to 750 to 1000 after about 30 to 60 seconds.
mine suffers a similar problem. so far I have been told various answers, mostly involving the bac valve, lambda sensor, air flow meter, etc. try starting of by adjusting the idle adjust screw (on top of the throttle body under plastic cover) this may be all it is. I have not had time to do mine. Its been fine otherwise and idles fine after a few minutes. mine is non turbo 87.

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