'02 2.9 - Rough Acceleration, Exhaust Noise, P0011 & P0016 codes

ashly.ydr · Post by **ashly.ydr** » 14 May 2018, 17:36

Hey, everyone! I've had a pretty rough issue come up on my 2002 S80 2.9 today. Was taking a usual drive, nothing out of the ordinary, and began experiencing loud exhaust-like noises upon acceleration. The acceleration became slow and unsteady. Some rumble and hum at idle. Also, a slight "jump", for lack of better word, while maintaining an even 48/50 mph.

My husband read a P0011 code on the first reading, and now it continually reads a P0016 code, both relating to the cam. Also, the timing belt was replaced just about 30,000 miles ago.

We're really at a loss here, and appreciate any help! We're currently most interested in what the correlation between this loud, exhaust-like sound and the cam codes are. My husband generally does my repairs, so this vehicle is frequently maintained.

Thanks in advance!
-Ashley Reynolds

Post by **RickHaleParker** » 18 May 2018, 19:25

It is issues with the Variable Valve Timing (VVT)

Three things that can cause both codes are:

Low oil pressure
Poor oil quality
Defective reset valve

You might start with an oil and filter change. Use a good grade of oil and a quality filter.

Post by **RickHaleParker** » 18 May 2018, 19:27

It is issues with the Variable Valve Timing (VVT)

Three things that can cause both codes are:

Low oil pressure
Poor oil quality
Defective reset valve

You might start with an oil and filter change. Use a good grade of oil and a quality filter.

Cees Klumper · Post by **Cees Klumper** » 22 May 2018, 00:21

Probably nothing, but the exhaust-like noise would have me checking all the air ducts (assuming you have a turbo engine) involved in the turbo system. I had a v6 turbo once pop an air intake hose, and that resulted in the noise you describe. Good luck with the repair.

Austingrayy · Post by **Austingrayy** » 15 Feb 2019, 12:34

I have a similar issue with my s40 2008, code p0011, rough idle, starts once, moves fine but idle poorly, timing belt replaced, oil changed , still same issue and bad fuel economy

Austingrayy · Post by **Austingrayy** » 15 Feb 2019, 12:37

I have a similar issue with my s40 2008, code p0011, rough idle, starts once, moves fine but idle poorly, timing belt replaced, oil changed , still same issue and bad fuel economy