Bad Idle...not the AIV...any ideas?

[SiNFuL]

Hey guys, i just recently removed my AIV and it doesnt die as much when starting and the revs feel better, but the idle is still low...i figured maybe it was just the idle now...but when I press on the brake it drops a few hundred, and when I lift off its at a nice 700-750rpms. Any ideas? Alternator and battery were tested at Autozone, fuel filter was replaced a bit ago, new spark plugs/wires...whats wrong!! =)
-Galen

[uiuc240]

Originally Posted by SiNFuL

Hey guys, i just recently removed my AIV and it doesnt die as much when starting and the revs feel better, but the idle is still low...i figured maybe it was just the idle now...but when I press on the brake it drops a few hundred, and when I lift off its at a nice 700-750rpms. Any ideas? Alternator and battery were tested at Autozone, fuel filter was replaced a bit ago, new spark plugs/wires...whats wrong!! =)
-Galen

Vacuum leak.

Eric

[mistaanime]

do a search..i believe i have replied to the same kinda post many times.

[matlock]

Clean your MAF, I had a similar problem....also be sure to check for Vacuum leaks....I would also reccomend checking your Cap/Rotor. Hopefully some of this might help.

[SiNFuL]

Originally Posted by matlock

Clean your MAF, I had a similar problem....also be sure to check for Vacuum leaks....I would also reccomend checking your Cap/Rotor. Hopefully some of this might help.

Will do, thanks a bunch guys!
-Galen

[FastBack 240]

Also dont know if you have already checked but, make sure you check your timing cause my idle was off alot and it was just the timing.

[SiNFuL]

dang, I think that's what it is...i have some major timing chain rattle when I rev...time for a new timing system!
-Galen

[mjjstang]

I believe everybody has that rattle.

[TachyonS14]

Ya, I was told that 240's make a little rattle. But like a loud clacking is your timming chain.

[WIshb0ne]

IAA valve or EGR valve check it or reset it

[ryan hagen]

yah, i 'd say check timing, what i did for this was cut a hole in a old cap at the number 1 plug position so i could make sure the rotor was there, then watched for the timing mark on the pulley. another thins to check is you idle air valve, on your intake tube there is a bigger hose that comes off near the valve cover hose, the hose goes back to a little control vlave, i ve heard that it can stick, but yah try cleaning maf, try celaning your water temp sensor, it seems the water temp sensor has lots of problems, and try cleaning your throttle body, i removed my egr and aiv and i had to clean my idle air valve to make it run right, also if u have a vacum leak you ll ahve higher rpms.

[SiNFuL]

Originally Posted by ryan hagen

yah, i 'd say check timing, what i did for this was cut a hole in a old cap at the number 1 plug position so i could make sure the rotor was there, then watched for the timing mark on the pulley. another thins to check is you idle air valve, on your intake tube there is a bigger hose that comes off near the valve cover hose, the hose goes back to a little control vlave, i ve heard that it can stick, but yah try cleaning maf, try celaning your water temp sensor, it seems the water temp sensor has lots of problems, and try cleaning your throttle body, i removed my egr and aiv and i had to clean my idle air valve to make it run right, also if u have a vacum leak you ll ahve higher rpms.

Thanks so much guys! It might be the timing chain or "The Rattle..." its exactly when I rev above 3k rpms and it rattles on the rev-down. Also I've heard about this IAA valve but everyone says its a pain to get to so I tried the AIV first...when I take my intake off the MAF looks clean inside...but is that not the part that gets dirty? Should I just remove the whole thing and soak it in carb cleaner...same w/ the IAA? And where's the water temp sensor(sorry guys...Im a want-to-learn-everything newb.) Thanks soo much for all your time guys!
-Galen