Just was wondering if anyone from the minneapolis area would have a chance to help me diagnose what happend to my 850 last night.
Last night was driving fine and then the turbo went psycho on me a overboosted like crazy. I shortly thereafter pulled over and heard a ticking/tapping sound which was decently loud. Let the car sit for about an hour and then restarted sound was there. Got it home and the noise wasnt as bad. When the engine revs tapping increases and when the throttle was released no tapping.
Thanks!
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0
Help Me Figure Out Whats Goofy With The 850 (minnesota)
Started by mrtl321, Dec 11 2011 05:39 PM
engine
6 replies to this topic
#1
mrtl321
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Posted 11 December 2011 - 05:39 PM
#2
Dan A
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Posted 15 December 2011 - 05:06 PM
Sounded pretty good last night. If you need a garage you know how to find me 
99 V70R
98 V70 GLT
#3
scandalo
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Posted 16 December 2011 - 05:46 AM
Hate to say it but this sounds like drivetrain failure. Either bent valve or rod.
sacrifice, on 18 February 2010 - 11:13 PM, said:
if people are hating, your doing it right
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#4
JVC
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Posted 16 December 2011 - 06:13 AM
Did you check your oil level? I know it sounds dumb, but mine ticks when its kinda low, maybe the overboost was due to a leak or something and now you're low on oil? Just thinking outloud...
Current : 1998 S70 T5
Previous: 1999 S80 T6
Family: 2002 S80 T6, 2005 XC90 2.5T AWD
#5
mrtl321
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Posted 19 December 2011 - 01:49 AM
Oil level was good, no leaks that the shop could find when going through everything. Said there was a noise coming from the top of the engine. And to myself there does not appear to be any noise there any longer.
#6
jnderr
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Posted 23 December 2011 - 02:45 PM
Check your vacuum lines from your bcs/tcv. Overboost might have been caused by a bad line going to your waste gate.
98' S70 T5+M 18Xk Miles
00' V70 NA 15XK Miles
84' 242 shell at the moment
00' V70 NA 15XK Miles
84' 242 shell at the moment
#7
Korruption
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Posted 27 January 2012 - 04:47 AM
With stu on this. Bent rod is my vote. Especially that the tapping goes away for a second when you let off the throttle.
Sorry bump dead thread. Mobile app fail
Sorry bump dead thread. Mobile app fail
1998 V70 R AWD - M66 - 2.5T - FMIC
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