Last night I installed my bored 60mm HO T/B from SMG. And now I have a lot of issues. It idles fine on start up, but after driving it idles around 1500 rpm, and slowly settles to 1100-1200 rpm. When driving around town in low gears it drives around like an automatic, really strong idle in the 1500 rpm range. I have tried both 2.4 IAC and currently have 2.3 IAC in it. I scanned it and came up with P0507 - Idle control system RPM higher then expected. I don't think its a vacume leak b/c all I did was change T/B's and not the manifold, its been on for over a year. Anyone have any ideas? The only thing I can think of is the T/B plate isn't seating right.
On another note today I have more problems. When I got on it all of my gauges died and there was a weird almost blow off vave sound and it skipped a few fires. It happened in 3rd gear around 5000 rpm two or three times on the freeway today. I mention it because this didn't happen last night when I did the same thing but with the 2.4 IAC in.
Please any help? I really don't want to put the stock T/B back on, the new T/B mde 3rd gear so much better.
PSN ID: Phatchance249
No one? Please I need it fixed today.
PSN ID: Phatchance249
maybe one of your sensors on the TB went bad or something.
Im a Xbox 360 fanboy...and damn proud of it!!
is the throtle body for your car b/c i know they make one but isnt it only for the ecotec?
Check the TPS...
Mine was pretty much doing the same thing...
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maybe one of your sensors on the TB went bad or something.
The IAC is brand new and the TPS I bought about a year ago but just now installed it.
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is the throtle body for your car b/c i know they make one but isnt it only for the ecotec?
It is a HO throtle body that has been bored out by SMG in a group buy a while ago. So yes it should work.
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Check the TPS...
Mine was pretty much doing the same thing...
What do you mean by check the TPS? Only the 2.3 TPS fits and as stated above it was bought brand new a year ago. I guess I could get another one, its just a pain cause you have to pull the T/B to get at it.
I am guessing you replaced the TPS and the problem went away?
PSN ID: Phatchance249
Check and see if the throttle plate is shutting all the way. I have seen this on bored TB's before. If it is not shutting all the way it causes a vaccum leak. If ti is the case this can be fixed by a little sanding (usually).
FU Tuning
I pulled the throtle body off again today and I think John Higgins was right, but in a different way. I think I found the problem, the throtle plate seems like it was made too small. Besides sanding down the throtle stopper thing and hopping that allows the plate to close farther I don't think I have any choice but to put the stock T/B back on.
Pic
Anyone have any ideas?
PSN ID: Phatchance249
not sure if its clear but the stock TB doesn't let any light through, and this one clearly has space most the way around. I guess that could be why its idleing just a little strong, right?
PSN ID: Phatchance249
I finally got around to getting a better throttle plate made and put it on the car today. It's better and doesn't throw a code but it still idles too heigh and acts weird when you get off the throttle. I have no vacume leaks, and I tried using both the 2.3 and 2.4 IAC valves, the 2.3 seems to be working best. I thought this was supposed to be an easy swap, I have tried everything I can think of and am in desperat need of advice. Anyone have any sugesstions?????!!!!!?????
PSN ID: Phatchance249
Anyone?
PSN ID: Phatchance249
