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700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars |
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Idle high when rainy. Drops to 1000 when car comes to a stopViews : 1464 Replies : 33Users Viewing This Thread : |
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Jan 5th, 2024, 13:50 | #1 |
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Last Online: May 13th, 2024 00:33
Join Date: Jul 2021
Location: United Banana Republic of Portugal
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Idle high when rainy. Drops to 1000 when car comes to a stop
So, in portugal it hasn't been raining lately, but today it is. I drove the car and like usually (or always), when it's wet/rainy, the car idles like crap.
Symptoms: - Idles at 1500rpm when rainy and vibrates - As long as the car is moving, even if disengaged, the idle is at 1500. As soon as it comes to a full stop, idle drops to 950rpm, like usual. -Car always has a slightly fluctuating idle ate 950/1000rpm, even when dry. Any ideas of what may cause these symptoms under these conditions? Leads and plugs are new, rotor and cap seem (to me) to be fine. MAF is suspected to be malfunctioning. Idle valve is untested. Alternator is untested.
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