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IAC valve 940

Help, Advice, Owners' Discussion and DIY Tutorials on all Volvo's "mid era" rear wheel drive Volvos.

1975 - 1993 240
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1990 - 1998 960
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Volvo940Stv
Posts: 1
Joined: Tue Feb 11, 2020 11:04 pm
Year and Model: Volvo 940 GL 1994
Location: Norway

IAC valve 940

Post by Volvo940Stv »

Now I wonder. Is that IAC valve supposed to be stuck sometimes and then it works? If I try to pry with a screwdriver on that throttle. It’s stuck. The width or the opening? Is that supposed to be like that? Idle is still rough. Tried it with two cables on a booster. It opened. But did not close itself. But prying the throttle helped it to return. I tried another IAC with the same opening but it did help a little bit, but the idle is rough. What about bad ECU?

Whole engine has new gaskets. No vacuum leak.
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