1997 Volvo 850 T-5 Stalling and Loss of Power

AmazingJr · Post by **AmazingJr** » 17 Aug 2011, 16:45

I have a 1997 Volvo 850 T-5 and i have a problem with it stalling and revving itself up to 3500 rpm sometimes, this happens wether im in neutral, park or in drive, I know this could be a vacuum leak but i dont know how to treat it. Also this Volvo has over 330,000 kms on it, what should i be doing to keep it going? it's still very strong and very powerful so i dont have any worries yet but i would like to know for the future
thanks!

Post by **Jack Rock** » 18 Aug 2011, 01:50

So it revs up to 3500 rpm then dives to a stall when sitting at idle? Have you checked for any codes? First thought would be idle air control motor.

AmazingJr · Post by **AmazingJr** » 18 Aug 2011, 18:20

Well i suppose i didnt really explain it very well now that i look back at my post, when starting the car it sometimes has a very rough idle sometimes stalling and other times it will just stop after i gve it some gas, and the car revves sporadically from 1000 to 3500 rpm, and occassionaly i get no response when i give it some gas, it just holds at whatever rpm i was at when driving.

Post by **Jack Rock** » 18 Aug 2011, 22:44

Well to start with check out the idle air control, it can get pretty dirty and bunged up inside and cause sparadic idle. Take it off and give it a good cleaning with carb cleaner or the like and make sure it spins freely. Once reinstalled or if you have a 12v supply, make sure it's runs smooth. I believe it always runs but someone can jump in if I'm wrong. Failing that check out your throttle position sensor, any codes?

AmazingJr · Post by **AmazingJr** » 19 Aug 2011, 16:21

Okay ill do that and let you know an i havent been able to get a diagnostic done yet, but i will asap and let you know how it went. Thanks alot by the way!