2003 v70 making a whining sound from engine

v70 dude · Post by **v70 dude** » 02 Sep 2010, 13:21

Another perplexing issue has arose from my good ol' V70. Let say I run it up to 1500rpm (in park), now I never let up off the pedal, I just hold it at that one spot. The RPM goes up then after a second or two it will drop down 500 or more. What ever the problem is, I feel it is the reason for the high pitched whining sound from the engine, and it sounds like it is near the alternator. I'm still having a problem with the car dying on me when I make a left turn (most of the time its a left turn). Brake stop working as well as the steering but, she fires right back up and I'm off.

tigmaned · Post by **tigmaned** » 06 Sep 2010, 10:30

always hard to say without being right there to hear or look at it! but did you check the easy stuff like a bad vac line or one that fell of a contector? no check engine light on??

jda2000 · Post by **jda2000** » 07 Sep 2010, 07:01

has the throttle body ever been cleaned? If not, start there.

Retired MVS Contributor · Post by **Retired MVS Contributor** » 07 Sep 2010, 08:04

jda2000 wrote:has the throttle body ever been cleaned? If not, start there.

This may or may not be the problem, but it is easy to check...While the engine is running and the noise is present, remove the dipstick...If the noise stops, you have a breather box problem...I don't know what makes the noise but have heard that there is a bladder in the breather box that causes this...It results in positive crankcase pressure instead of negative and as a result oil starts to collect in the breather box...A PVC overhaul seems to be the answer...

v70 dude · Post by **v70 dude** » 07 Sep 2010, 11:32

Thanks guys, I will do all of those, or at the very least check. I hope that cleaning the throttle body isn't a problem. I guess that would be a garage issue or dealer.