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96 850 turbo idle issues

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70
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volvo850black
Posts: 124
Joined: 19 February 2010
Year and Model: volvo 850 1994
Location: tennessee

Re: 96 850 turbo idle issues

Post by volvo850black »

ok today I pulled, cleaned, and rerouted all vacuum hoses going to the turbo. I then cleaned all electrical connectors and my PTC nipple all fairly clean. Now I have increadible boost on the (turbo probably twice the power I had yesterday), but still have the kangarooing at about 2500 RPM and it attemps to stall at idle. When rolling to a light it stumbles then catches itself. I am going to clean the Fuel pressure regulator tomorrow. Does anyone have any other suggestions?
MattC 94 854 NA and 96 855 turbo
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volvo850black
Posts: 124
Joined: 19 February 2010
Year and Model: volvo 850 1994
Location: tennessee

Post by volvo850black »

Problem is fixed! Wanted to post the issue so anyone with similar issues can check this on their car. My idle air control valve had failed. I had cleaned it and it did no good. Today I was at the local pull-a-part and got one just to try it and it is now running smoothly. Hope this helps someone else.
MattC 94 854 NA and 96 855 turbo
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