Volvo S80 A performance sedan that offers top notch luxury, outstanding handling and so much more.

Help diagnose a problem

Old 01-28-2011, 12:07 PM
Senior Member
Thread Starter
Join Date: Dec 2008
Posts: 452
Default Help diagnose a problem

While making a left turn, i hit the gas pretty hard and the car buckled and started shaking.

Thought it was a missfire (bad coil) but the check engine light did not flash and i did not get any messsages. Previously i had a check engine light on for a small evap leak, but drivability was not affected and i drove around like that for about a year.

I stopped and turned the car off, restarted, same thing, while idling the car keeps shaking and rpm wobbles, i can floor the gas pedal and the car stops shaking, but it speeds up very slowly and basically top out at around 50-60 Km/h. Transmission shifts smoothly.

Again no new check engine light.

Possible cause ? ignition coil, Throttle position sensor, other sensors ? car is in the shop right now
Old 01-28-2011, 02:14 PM
Senior Member
Join Date: Feb 2010
Posts: 171

One possibility is a vacuum or boost leak. I had a similar thing happen when the wastegate acutator pipe (from TCV) for the the second turbo popped off. The car peformed REALLY badly.
Old 01-28-2011, 08:52 PM
Senior Member
Thread Starter
Join Date: Dec 2008
Posts: 452

Got the car back, mechanic says its the ETM, he said he scanned the car and came up with like 5 bad codes, some o2 sensors, the evap leak i had before, a missfire, and something else.

I find it hard to believe i did not get a check engine light for any of those ( besides the check engine light for the small evap leak. He took out all the plugs, car has a bad valve gasket, and its spitting oil on the coils and spark plugs, they were fouled so he replaced them. The plugs were last changed year and a half ago, and yes it always burned oil and the plugs looked very nasty, tips were corroded and discolored.

I drove it back home (barely) and now contemplate my next move, i think im just going to get rid of it, i was offerer $500 canadian at a used parts place. Cut my losses finally and move on, this car is garbage, not build well at all, i loved driving it, but i hated spending money fixing it, time to move on...
Related Topics
Thread Starter
Last Post
Volvo S60 & V60
01-13-2011 09:35 AM
Volvo V70
12-14-2008 05:08 PM
Volvo 240, 740 & 940
04-21-2008 01:25 PM
Volvo 850
12-05-2007 06:38 PM
Volvo 850
08-08-2007 01:44 AM

Thread Tools
Search this Thread
Quick Reply: Help diagnose a problem

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.