My 2006 Jetta revs up, then drops down, and repeats over and over when car idles. Also, after car warms up, or immediately on hot days, there is a loud screeching noise that comes from behind my dash on the passenger side. It has 120,000 miles, and already I have replaced the entire braking system and O2 sensors due to this, but no one seems to be able to guess what the cause is.
What is causing idling rev & loud screeching sound behind my dash when car warms on 2006 Volkswagen Jetta
by Manley531 in Durango, CO on February 24, 2014
2 answers 2 comments
ANSWER by asksteevies , February 24, 2014
I think you got two problems ,the screeching I think is the bearing in the heater motor ,no?. And they all have that high ,low/ ,problem ,I think throttle body needs cleaning..
COMMENT by Manley531 , February 28, 2014
Thank you so much! I'm having it looked at next week. I'll let you know how it goes.
COMMENT by asksteevies , February 28, 2014
ANSWER by lstewart , February 01, 2015
My car was fast revving until the valve gasket cover was replaced. the part cost 172$ from Deutsche Auto part. I noticed on the repair pal the estimated cost including labor could be as low as 150$...do not know about the loud screeching noise