Dam, decided a few weeks back to go for a complete egr blank plate to replace the washer with hole, wish not fitted it now as PCM light came on the next day after fitting. Car now seems down on power...must be limp mode.
Anyway, tried pulling the egr electrical connector and found that didn't change anything, then tried putting plate in with 4mm hole and still PCM light stays on and car runs not quite as sweet. The real annoying part is on the day of fitting the complete blanking plate the car ran lovely and was better than having a washer, spool was better, idle perfect from cold, etc, etc but next day PCM light came on.
Questions, does PCM fault stay on ecu till it figures out to test/reset itself? I've read a few runs may do it.
Do I really need a hole in egr when she's a 2004 2l model with euro 3 on vech spec sheet?
I hate egr valves...