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Rough Idle in S90 S90-V90 1998

uid 19's pic
posted by  jbowers on  Mon Mar 15 11:03 CST 2004
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last visit: Sun Jan 22 13:49 CST 2012
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In all likely hood, you have a bad intake manifold gasket. It is leaking by cylinder #1 causing it to be lean enough to not fire at idle. As soon as the intake air volume increases the small leak becomes insignificant and the car runs OK. I'll bet your codes are P0301 and/or P0172.

I though by the time that the S/V90s were made, the gasket had been revised to the better greenish/aluminum one and not the redish/orange one? Is it possible the manifold is loose on the head?

BTDT!
--
'96 965 with 16' wheels at 113K. Had '85 745 Turbo Diesel for 200K.






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New Rough Idle in S90 [S90-V90][1998]
posted by  Gundyj  on Sat Mar 13 04:26 CST 2004 >


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