My car runs worse after cleaning EGR valve!?
Thanks for looking!
I recently replaced my spark plugs (with Nissan parts plugs) and also dismantled and cleaned my EGR valve, because my car failed the NO2 aircare testing, in my 92 Maxima V6 SOHC.
Now, however, I've noticed the idle acting strangely--when I slow down for a traffic light, the engine RPM's seems to drop very quickly into the idle, dipping to about 500rmps, then settling around 700rpm's. The engine sounds like it might stall, but doesn't. My gas mileage is noticable worse now as well.
Any ideas what this could be?