I have a 96 E300D which just gave me a check engine light. Autozone's code reader says
"EGR system fault
The EGM has detected too little flow on the EGR system
Probable causes
-Blocked passage on EGR system
-Failed EGR valve
-EGR solenoid faulty
-Failed EGR pressure sensor where applicable
-Failed EGR position sensor where applicable

The car has 175,000 miles and the EGR has been cleaned several times to keep it alive. It is probably time for another one.

Here come the questions:

1) Where can I buy an EGR for a reasonable price, $400 seems a bit much
2) Is the solenoid cheaper to replace? Where to get one of those?
3) Is there any temporary fix that will satisfy the computer and turn off the check engine light until the Calvary arrives?
4) When the problem is corrected will the check engine light go out by itself or is there some procedure to reset it?



Many thanks in advance