I will try to help as best I can, but I really need the code that set. You need a scan tool to command the egr open/closed. Here are some things to check. Excessive deposits on the EGR valve pintle or seat.
Remove the EGR valve and check for deposits that may interfere with the EGR valve pintle extending completely or cause the pintle to stick.
" Poor connections at PCM or EGR valve. Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.
Inspect harness connectors for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, and poor terminal to wire connection. Refer to Intermittents and Poor Connections Diagnosis in Wiring Systems.
Inspect the wiring harness for damage. If the wiring appears to be OK, connect J 39200 DMM and check circuit continuity while moving connectors and wiring harnesses related to the EGR valve. A change in the DMM display will indicate the location of the malfunction. Remove the egr and clean the egr tube they get plugged with carbon. These are some things to check, post back with the code so I can give better advise.
Sunday, January 4th, 2009 AT 10:54 AM