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04 Diesel 06-28-2009 01:29 PM
1986 300E
 
2 Attachment(s)
What is this called, it is the source of my car whinning. I have been looking for this noise for a long time. Something to do with vacuum?

JimmyL 06-28-2009 02:49 PM
Vacuum check valve.....

pawoSD 06-28-2009 03:59 PM
Looks like one of the EGR vacuum check valves. I got rid of all of mine and plugged the lines. :D

04 Diesel 06-28-2009 06:15 PM
Quote:
Originally Posted by pawoSD (Post 2235116)
Looks like one of the EGR vacuum check valves. I got rid of all of mine and plugged the lines. :D

My car does not have a egr valve on it, it is right by the brake booster.
Look at the second picture you can see the abs booster.

04 Diesel 06-28-2009 06:21 PM
Quote:
Originally Posted by JimmyL (Post 2235082)
Vacuum check valve.....
Where would I get one? Do they sell them here on this site? What would cause it to go bad? Sorry for all the ?s

Cal Learner 06-29-2009 08:28 AM
Quote:
Originally Posted by JimmyL (Post 2235082)
Vacuum check valve.....
Serves as a purge valve for the vac line coming off the thermo valve on the cylinder head and eventually ending up at the throttle housing. I believe the correct part number is 107-470-08-93, but you should confirm with the dealer or Internet vendor.

04 Diesel 06-29-2009 04:46 PM
Quote:
Originally Posted by Cal Learner (Post 2235537)
Serves as a purge valve for the vac line coming off the thermo valve on the cylinder head and eventually ending up at the throttle housing. I believe the correct part number is 107-470-08-93, but you should confirm with the dealer or Internet vendor.
Thankyou.


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