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1999 v70T5M56 P1238 P1171 P0172 rough idle, stall Topic is solved

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
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abscate
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Re: 1999 v70T5M56 P1238 P1171 P0172 rough idle, stall

Post by abscate »

Ive Done three hot runs on this with not a hint of return

The conditions under which it occurred were nasty winter weather, about 10F and slow winter traffic from 15-25 mph

I think I got some ice in the induction that reached the throttle body and was screwing up the idle region of the air flow. That’s the best I got.
Empty Nester
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RickHaleParker
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Post by RickHaleParker »

It was Arctic Gremlins, they done gone home.

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1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.

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