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No idle, dies if I take my foot off the accelerator

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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Credit2u
Posts: 32
Joined: 14 July 2010
Year and Model: 1998 V70 XC AWD
Location: Poulsbo, WA

No idle, dies if I take my foot off the accelerator

Post by Credit2u »

Suddenly out of nowhere yesterday, I encountered a new issue.

I was at the gas station getting gas. I had about 5 gallons in the car, added about another 10 to 12 gallons. Got in the driver's seat fired it up and drove off, got 15 feet and the moment I took my foot off the accelerator, it died.

Drove it home with the same symptoms and parked it figuring maybe it was just a fluke (yes, I get that was awfully optimistic thinking on my part). I fired it up this morning and it's doing the same thing, runs fine while my foot is on the accelerator, but the moment I remove it, it dies. This is a '98 V70XC AWD with only about 242k miles, just in its prime.

Any help or ideas would be appreciated.

Thanks!

850_GLT_Owner
Posts: 59
Joined: 21 April 2010
Year and Model: 93 850, 97 850R
Location: boston

Post by 850_GLT_Owner »

I would check the IAC hoses. I had a very similar thing happen on my 97 850. I was able to drive but it died as soon as i got my foot off the pedal. Popped the hoses back on and it was fine. If the hoses are ok, check the IAC itself. If you fully disconnect the IAC and shake/spin it gently (i thought it like starting a fire with a stick..spun it between my hands in a "brr im cold" way) you should hear some movement inside. Look inside, if its black and gunked up you might need to clean it the hell out of it with some carb cleaner.

If its not that, i have no idea. Check your hoses though.

Credit2u
Posts: 32
Joined: 14 July 2010
Year and Model: 1998 V70 XC AWD
Location: Poulsbo, WA

Post by Credit2u »

I will give it a shot! Thanks!!

JimBee
Posts: 1915
Joined: 9 December 2008
Year and Model: 93 and 2 96 850's
Location: Minneapolis
Has thanked: 25 times
Been thanked: 42 times

Post by JimBee »

What's the IAC

850_GLT_Owner
Posts: 59
Joined: 21 April 2010
Year and Model: 93 850, 97 850R
Location: boston

Post by 850_GLT_Owner »

Idle air control valve

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