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Erratic idle V70-XC70 1999

posted by  roffe135 on  Thu Oct 7 14:53 CST 2010
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last visit: Thu May 9 18:44 CST 2013
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Hello.
-99 V70. Base model, nonturbo, auto transmission, 153k so far.
Has a slightly erratic idle it seems, especially when cold is when I notice it.
Fluctuates between appx 900-1300rpm...
No check engine light or other indications... Any ideas?
Thanks,
Rolf








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Erratic idle V70-XC70 1999

posted by  KlausC on  Fri Oct 8 05:15 CST 2010
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last visit: Fri Oct 24 10:15 CST 2014
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ETM comes to mind. Temperature will effect how it responds. Xemodex.com is better than OEM and half the price when replacement is warranted.

Klaus
--
Always willing to listen, just not able to take direction.








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Erratic idle V70-XC70 1999

posted by  roffe135 on  Wed Oct 27 05:00 CST 2010
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last visit: Thu May 9 18:44 CST 2013
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Hello Klaus.
Thanks for the info. Have not replaced the throttle body as of yet as my problem is barely noticeable...
Trying to figure out if there are any cheaper options than a $500 throttle body exchange (seems very nice though), like a Throttle position sensor (Ebay #220470687699, at appx $80 or so)?
What do you think?
Rolf








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Erratic idle V70-XC70 1999

uid 40935's pic
posted by  Goatman on  Thu Oct 7 16:59 CST 2010
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last visit: Sat Jul 26 20:30 CST 2014
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Hi,


Check for vacuum leaks, especially the Brake Vacuum Servo. Pinch off the line and see if the problem disappears.

There are also problems with the coil on plug ignitors, but, without the pinpointing of the engine computer, confirming this will be difficult without total replacement.


Goatman








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Erratic idle V70-XC70 1999

posted by  roffe135 on  Wed Oct 27 05:07 CST 2010
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last visit: Thu May 9 18:44 CST 2013
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Hi.
Have heard that the coils go bad and so on, but wondering if I wouldn't see any fault codes, like a misfire or something related to the coils in that case..?
Rolf







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