Vacuum Problems
07-22-2003, 08:58 PM
#1
Newbie
Thread Starter
Join Date: Jul 2003
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Vacuum Problems
I'm wondering if anyone could help me with a couple of probelms I'm having with my C220.
The PES Control Module makes a constant noise(pumiping air) for a couple of minutes. This is a sure sign of a leak. BUt at this moment no one has been able to find any.
The main A/C vents shut off and on randomly. The problem lies in the Fresh/Recirculated Airt Flap and the left center air outlet(left tempering actuator), DOES THIS MAKE SENSE? Obviously the dash needs to be lowered in order to replace these actuators and I will not pay $500 dolars to the dealer. Does anyone have a diagram that I can folllow?
Finally, my check engine light is on. I already replace one of the O2 sensors and the dealer is telling me that I have to replace one of the O2 sensors. Can this vacuum problem that I'm having have anything to do with the Check engine light coming on? I haven't checked the EGR Valve for leaks personally, but the car has been to 3 diferent mechanics and they haven't been able to help me with the a/c nor the Pes Control Module going on and on.
Thank in advance,
Eduardo
The PES Control Module makes a constant noise(pumiping air) for a couple of minutes. This is a sure sign of a leak. BUt at this moment no one has been able to find any.
The main A/C vents shut off and on randomly. The problem lies in the Fresh/Recirculated Airt Flap and the left center air outlet(left tempering actuator), DOES THIS MAKE SENSE? Obviously the dash needs to be lowered in order to replace these actuators and I will not pay $500 dolars to the dealer. Does anyone have a diagram that I can folllow?
Finally, my check engine light is on. I already replace one of the O2 sensors and the dealer is telling me that I have to replace one of the O2 sensors. Can this vacuum problem that I'm having have anything to do with the Check engine light coming on? I haven't checked the EGR Valve for leaks personally, but the car has been to 3 diferent mechanics and they haven't been able to help me with the a/c nor the Pes Control Module going on and on.
Thank in advance,
Eduardo
08-01-2003, 09:53 AM
#2
MBWorld Fanatic!
A remote guess from my side. Did you check the fan speed switch (if dont have Climatronic, but the "normal" stuff) The switch has a vacuum hose connected and if this is off it may cause this appearence.
08-01-2003, 07:54 PM
#3
Newbie
Thread Starter
Join Date: Jul 2003
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Took the whole dash down and examined every vacumm element(controls air flaps) in the a/c. Found that two of them were leaking air. Replacing them fixed EVERYTHING in my car. Check engine light...... GONE, no air in center vents.......CORRECTED, PES(vaccum pump) noise.......gone.
It cost me $100 (total) in parts. Dealer wanted $1,000.
It cost me $100 (total) in parts. Dealer wanted $1,000.
