Rpms drop to 500
#1
Rpms drop to 500
01 Trans Am, cleaned top end, new o2's, new plugs, wires looked good (stock but will change soon), clean air filter, clean maf, new fuel filter, injection cleaner etc. When I come to a stop or rolling to a stop, put car in nuetral or have clutch in and braking to stop my rpm's will drop down to 500. I noticed that once the car has completely warmed up and driven in excess of 20 mins this usually never happens. Any suggestions? Its driving me crazy!
#3
where is the EGR valve on an 01 ls1 engine? I'm pretty familiar with these cars and do all my own work. How to check/fix/diagnose and egr valve? Any idea on replacement cost and where I can a new one? If its cheap maybe I'll just buy a new one.
#4
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Originally Posted by mc01ta
where is the EGR valve on an 01 ls1 engine? I'm pretty familiar with these cars and do all my own work. How to check/fix/diagnose and egr valve? Any idea on replacement cost and where I can a new one? If its cheap maybe I'll just buy a new one.
You'll have to do some research on your vehicle. Autozone prices the EGR at $150, and Advance doesn't have it. If you do replace it, make sure you thoroughly clean the carbon from the port hole. With that said, that might be all you need. Try cleaning it up and see if that helps.
#5
Great feedback! To bad your not local to me, sounds like you know how to do this one. Sounds like I better check before replacing b/c of cost. Thanks again, I appreciate it.
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Originally Posted by mc01ta
Great feedback! To bad your not local to me, sounds like you know how to do this one. Sounds like I better check before replacing b/c of cost. Thanks again, I appreciate it.
Your symptoms definitely point to the EGR but there are other possibilities like a vacuum leak, dirty MAF sensor, or a computer problem (and probably others that I don't have any experience with).
Good Luck!