Quote:
Originally Posted by Diseasel300
If it took 15 mins for ANYTHING to leak down 3mmHG, that's a non-issue. Anything big enough to cause idle or running issues is gonna be something big, as in won't even hold vacuum for 1 second.
Be aware that the 90s W124's are known for biodegradable wiring harnesses that crumble and cause all sorts of weird issues.
|
Oh I know all about the eco garbage harness... The main harness has been replaced, currently looking into whether the EGAS module harness also needs replacing...It doesnt feel bad but I need to cut it open and see.
Quote:
Originally Posted by 97 SL320
The only way an EGR will cause an idle problem is if the pintle ( valve ) lets exhaust gasses pass into the intake manifold.
You could pull the vacuum hose off on a properly operating car to disable the EGR and idle quality will be unaffected.
|
The EGR appears to function fine in that it clearly opens under vacuum and snaps back when vacuum is removed. I am not 100% sure if it is shutting fully etc so I am going to try capping the EGR pipes and removing the unit entirely. Will see if that impacts Idle at all.
The smoke leak from the EGR during smoke test makes me think it might be bad. There was a fair amount of smoke not just a tiny bit.