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Ask Andy Your Own Question
Andy, Volvo Expert Technician
Category: Volvo
Satisfied Customers: 3819
Experience:  One of only a handful of ACTUAL Volvo dealership technicians on JA, ASE Master Certified with L1
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Volvo v8 4.4 ecm p0506 idles low in drive some times stall

Customer Question

Volvo v8 4.4 ecm cod p0506 idles low in drive some times stall there seems to be no air leaks and cleaned the throttle body?
Submitted: 1 year ago.
Category: Volvo
Expert:  rpmdiag replied 1 year ago.

Hi, welcome to Just Answer. I’m Ron and I’ll be helping you
Before we get started though, Please understand that I don't know
your skill level or tools you have to assist us. Also understand that
I can't see, smell, hear, or touch the vehicle either, so patience is
appreciated. JA is a great Q/A site, but it does NOT replace a
repair shop.
My goal is to make you happy and get a great rating in return for
my time. Sometimes I have to give you bad news that I know you
didn’t want to hear, so please don’t shoot the messenger.

Check for the vacuum leaks externally with water, and internally with a smoke machine. i think you still have a vacuum leak.

Thanks, Ron

Customer: replied 1 year ago.
I did use water and smoke there is very little smoke out of a couple areas but don't think it is an air leak.
Customer: replied 1 year ago.
do you think the electric throttle body is no good?
Expert:  rpmdiag replied 1 year ago.

Well, if you're seeing smoke through a sealed intake, that would be enough to cause a problem. The leak can be where you don't see it too under the intake. You should also have an idle air control motor right at the throttle body that can be dirty or even bad too.

Thanks again, and please don't forget to rate me and keep this link in case you need me again later on.


Expert:  rpmdiag replied 1 year ago.

Possibly a bad throttle body, you can test it with a scan tool in bidirectional mode to be sure.


Customer: replied 1 year ago.
I am not happy with these answers I never said there was smoke coming out of the intake it self. There is no idle air valve on this motor it is controlled by the throttle body it self. Not sure why my credit card was charged 19.00 if I am not satisfied?
Expert:  Andy replied 1 year ago.


My name is ***** ***** I am a Volvo dealership technician. Did you still need help with this? I see the other expert is not responding. Let me know. Thanks.

Customer: replied 1 year ago.
no thanks I already figured out the problem.