FLYWheel

Bachoner · Post by **Bachoner** » 06 Oct 2010, 15:31

Hope someone can help. Recently purchased a 2001 v70 with 110k miles. I put abt 5k miles on it with no issues orther than what I expected when I purchased it. I replaced the exhaust system. But now i have lost power when driving. The car's transmission is working but i have a tremendus loss of power when driving. Going uphill has been a nightmare. My mechanic who is not a volvo specialist thinks that the FlyWheel is detaching from the engine body. He says that this explains why it didn't show it self right away. Is he on the right track? Has anyone experienced this?

jda2000 · Post by **jda2000** » 06 Oct 2010, 16:56

did you also replace the cat converter? sounds like you have an issue with plugged up exhaust

ed7 · Post by **ed7** » 06 Oct 2010, 19:00

Start simple like fuel filter. Check exhaust flow by listening and feeling while someone else is on the throttle.
Flywheel detachment? That would involve a LOT of noise.
Since it's new to you, did the former owner do the timing belt?
ED7

cmblackburn · Post by **cmblackburn** » 06 Oct 2010, 20:56

Well, I Reeeeeeeally hate to be a bummer, But 2001 '70s (actually, most volvos of this model year) are notorious for having CRAP transmissions.
Let's start with the obvious....Are there any lights on on your instrument cluster?
Also, pull your transmission dipstick and smell the fluid/look at the color. It should be red (NOT BLACK!!!) and not smell burnt.
If it is black and smells bad, a transmission drain and fill could do wonders for you. (there are write ups on how to do this all over the site)
Hopefully you're not having the common transmission failure...Keep us updated

Post by **polskamafia mjl** » 06 Oct 2010, 21:58

+1 cmblackburn

Bachoner · Post by **Bachoner** » 07 Oct 2010, 07:50

Timing belt was replaced 10k miles ago. The preivous owner didn't tell me but my mechanic tells me that the transmission is a replacement one. His first concerns was that the person who replaced the transmission bent the flywheel when the bolted the transmission the the engine. After explaining to my mechanic that i drove the car for 5k miles before the issue presented its self he came to the conclusion the the flywheel must be breaking away. He checked the fuel system, checked the timing belt and cam shaft sensor which i had replaced. He noticed gunk build up underneath the cam shaft sensor i forget the name of the part. He cleaned it and replaced the oil with synthetic oil. Issue didn't go away. He gave me a price of $1600 to replace the flywheel. Does that sound fair? He assures me that he went through the car and that the engine is fine as well as the transmission. Awesome car ,invested more than i wanted to in a 9 year old car but I figure I should get at least another 5 years after the repair.

JasonFRC · Post by **JasonFRC** » 10 Oct 2010, 09:53

If you're not hearing any sort of mechanical - banging around noise I'd be very suspicious of the flywheel diagnosis.

While it is possible to "bend" the flywheel (or flex plate in an automatic, I'm assuming it is an automatic transmission) there is very little clearance there, and most times the engine would not rotate at all with a bent flex plate.

+1 on the mechanical transmission failure, check your fluid as stated above. Take it for a drive, watch engine RPMs. As you have trouble going up hill as you stated, does engine speed increase but the car doesn't go any faster? - Slipping transmission.
You didn't answer the previous question as to the presence of warning lights or fault codes.. That is important information here.
Asking for a fair price on the internet will usually get you plenty of answers that just clouds the situation. You mentioned flywheel- is the car a manual transmission car or an automatic? Front wheel drive? That's at least 8 hours of billed labor.
Flywheels/flexplates are expensive. The cost seems kind of high, but not out of hand. I think I'd take it to a Volvo specialist or a dealer for a second opinion before you let this guy tear into it.