Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Hi Im David, pull the throttlebody and clean it out. remove the iac and clean it out then remove the egr valve and clean it out. use throttlebody cleaner on all of them. dont forget to clean all the passages to the intake where the components mount to also
keep me posted please
well any luck??????
holy crap!!! a bit clogged ay?
im sure you will see a big improvement
what? after cleaning all that crap out? did you also clean out the passages on the intake where they mount to?
check engine light?
they may have well been, but did you clean them anyway? sometimes they block them off of dont use them depending on the engine, but if one is a collant passage or an oil passage they need cleaned out
let me pull up an idle relearn procedure to see if that helps
just for the heck of it, unplug the mass air flow sensor and start it up
you can disconnect the battery for 5 minutes
how did it idle?
ok. give me a few and we will check the voltage and signal voltage and ground for tha maf sensor
here ya go.
ok hang on a few......
since you removed the throttlebody and iac and egr, have you driven since putting it all back together?
sorry, had to get some sleep. yes, the iac plugs up but its most dried carbon deposits but it still needs cleaned. the egr valve and passages do too, but you cleaned them right?
ok, after you run it for a while to the point where it be be warm, remove the vacuum hose on the fuel pressure regulator. see if gas is evident on the hose.
ok, let me know about the fpr
let me find out... so your running rich...hmmm
yes thats the one behind the power steering bracket
ok...let me look into something
run the above link tests and it'll tell you whats up with the maf. if good or bad, and dont forget it could be the wiring