SPONSORED LINKS

1998 Mercedes Benz S420 AC Vacuum leak

Tiny
BARNIEGUEST
  • MEMBER
  • 1998 MERCEDES BENZ S420
  • V8
  • 2WD
  • AUTOMATIC
  • 175,000 MILES
My blower on the climate control stops when I accellerate quickly. Once I reach a constant speed it returns. I am sure I have a vacuum leak and I think it is in the ac control block. I need to know how to get to it. Help. I sent a message yesterday but could not get back in to see if I had a reply. I gave yesterday
SPONSORED LINKS
Thursday, July 1st, 2010 AT 9:12 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Hello, it sounds like the vacuum check valve has failed and needs replacing. This valve is located at inline or at the base of the vacuum source at the engine or firewall. Note: some models feature the valve under the dash on the passenger's side foot well.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, July 12th, 2010 AT 1:32 PM

Please login or register to post a reply.

Related Engine Vacuum Leak Content

Vacuum Leak Test and Repair
VIDEO
Vacuum Leak Test and Repair
Instructional repair video
Vacuum Leak
GUIDE
Vacuum Leak
An automotive engine heavily relies on a sealed vacuum system to help monitor and optimize the engine's performance, when this system fails and leaks emerge performance ...
VIEW MORE

Sponsored links