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Cold Start ok, almost stall during warm up, then fine when warm

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pdr1966sc
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pdr1966sc

Cold Start ok, almost stall during warm up, then fine when warm

Post by pdr1966sc » Wed Dec 19, 2018 4:59 pm

I've seen similar symptoms but not a clear solution:
06 V70R - just been through Timing Belt, PCV, struts, radiator.......
If it is a few degrees below freezing - cold start is fine - but once the engine tries to slow and idle down (after about 1 min) it almost stalls, recovers, and almost stalls - does this for a few minutes until the engine is warmer, once fully warm it is just fine.
I have VIDA, and may try to observe fuel/02's but have not actively run vida this way yet.
Kind of tricky to trouble shoot because after it is warm, the symptoms are gone.
Also not a lot of fun booting up the laptop to watch in the morning when you are trying to get somewhere.....

Any suggestions appreciated.

93ForMe
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Re: Cold Start ok, almost stall during warm up, then fine when warm

Post by 93ForMe » Sun May 17, 2020 5:38 pm

I know that this was posted a while ago, but did you ever find a solution to this problem? I am having a similar problem with my 93 850.
Thanks!

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darrylrobert
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Re: Cold Start ok, almost stall during warm up, then fine when warm

Post by darrylrobert » Sun May 17, 2020 10:08 pm

sounds like the ETM to me?..there is a test on VIDA

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RickHaleParker
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Re: Cold Start ok, almost stall during warm up, then fine when warm

Post by RickHaleParker » Sun May 17, 2020 10:19 pm

93ForMe wrote:
Sun May 17, 2020 5:38 pm
I am having a similar problem with my 93 850.
When was the last time you cleaned the idle control valve?
--------
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0, Plant Torslanda Sweden.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger, Plant Ghent Belgium.

93ForMe
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93ForMe

Re: Cold Start ok, almost stall during warm up, then fine when warm

Post by 93ForMe » Sun May 17, 2020 10:32 pm

I cleaned my idle control valve a couple of weeks ago, still having the problem.
This is my situation:
viewtopic.php?f=1&t=93975

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