Smiles

I cleared mine already, I also disconected my batery for a hr and its still the same. I just dropped it off at my local performance shop tonight, and he said the same thing majourpain said, that the sensors were thrown off so it defaults to the warm up idle.
When I get my car back tomorow I'll let you know what he comes up with.

ninja44

iTrader: (1)

If you used WD 40 to clean the TB then it has most likely coated the TPS and MAP sensors. Remember that whatever you squirt into the TB will hit the SC, intake manifold and straight into the motor. Cleaning the TB does not require you to remove the unit itself! Squirting TB cleaner into the intake is sufficient and removing the TB only increases the chances of you ruining the TB by moving the plate. I did it 3 times with my 05 SC and never once had a problem.

Smiles

has anyone tried a reflash yet?

outtamymind

i'm gonna try a TAC module update tonight and i will let you guys know how it goes.

nope, didn't give me the option to do a TAC update. and i've already got the latest ECM update. sorry guys

Joel

I used WD-40 to clean mine and it's fine. The reason I know it's fine is because I bought a new TB, and had the exact same problem with the new one.

outtamymind

out of curiousity how many of us are using CAI or SRI and having this issue and how many of us still have the stock intake and are having this issue. its something that hasn't really been asked. off had i'm using a CAI and i can't remember if it did this when i had my stock intake on. and i'm too lazy to put the stock one back on to find out if its the cause.

Joel

I have the stock intake.

outtamymind

k that rules that out then lol

MyCobaltGetsMeCooter

Your PCM will need to be reflashed. Just resetting it will not work. Trust me, it took the dealer 16 hours to figure that out.

Smiles

This might be a dumb question, but is a ECM reflash the same thing as a PCM reflash? The guy at my shop said he would try reflashing the ECM.

outtamymind

the pcm and ecm are one in the same. thursday i will try a reflash of the ecm and see if that helps as one guy said it helped

MyCobaltGetsMeCooter

Yep, correct me if Im wrong but i think this is what they stand for.

PCM- Powertrain Control Module

ECM- Engine Control Management

Its close I know LOL.



But yes, the computer will need to restored to its defualt state so it will relearn the new air/fuel ratio values instead of compensating for the crud in the TB and increasing idle.

Smiles

my mechanic is telling me that the sensors in my throttle body are toast because they are sensitive to carb cleaner. He hooked a meter to the sensors, and he said the readings were speratic. Also when he put it to full throttle the blade only opened half, but the computer still read %100 throttle.... so I dont know what that means, but he told me I need a new tb.
Does any of that make sence to you guys?

outtamymind

its possible that thats just a random thing. my driveability techs at work have been using carb cleaner to clean throttle bodies for years with no ill effects. but its definetly something to look into. i'll ask my guys tomorrow and see what they say.

Smiles

thats what I thought. I've always used carb cleaner on all my cars and never had anything like this happen.

MyCobaltGetsMeCooter

My mechanic charged me $500 for a new manifold and gaskets. That had nothing to do with the problem. I had to MAKE him reflash my ECU. Im 17, and he said that Im just a kid and hes the mechanic..

Yep I proved the idiot wrong. It just needed to be reflashed to reset the TPS. I hate stubborn fools.

Gene Culley

iTrader: (1)

When I cleaned my recently for my supercharger build I sprayed the carb cleaner on the rag and then cleaned out the TB. Maybe people might want to try doing that.

shawn672

why were u messing with ur TB anyways, you're obviously the one who messed it up. this issue has been going on for awhile with no fix, so dont knock on the mechanic for trying something else

MyCobaltGetsMeCooter

Did you even read what I wrote? Ill write it so even a baby with down syndrome could understand it, hopefully you will be able also.


Cold starts, stuttering and stalling. BAD.

Clean throttle body with TB cleaner on micro fiber rag. GOOD.

Fix problem. GOOD.

Computer had to be reset so it would stop opening the throttle body more to compensate for carbon deposits. BAD.

Stupid mechanic who wouldnt listen to me. BAD.

He finally listend to me. GOOD.



Good boy.

Joel

So did it work? If it did I'm going to get mine re-flashed asap. I can't stand this anymore.

Red07SSNA

I don't see how it would hurt if you got a reflash...there's an 08 SS/TC around here that has had to get 2 reflashes because his TPM quits working?

outtamymind

if your referring to the tire pressure monitors, having a relearn done for that and this issue are 2 totally differen't things. and no i didn't. i've got a buddy with a 2.4 that doesn't do this, so him and me are gonna swap throttle bodies and see if his does it or not before i do the reflash. if his starts doing it and mine stops then i know its the throttle body or one of its components that are failing. if everything is still the same then i will continue on with the reflash

Smiles

I can save you the work of swapping throttle bodies. My shop just put a brand new one in today, and its still acting up
They're going to do a reflash tomorow to see if anything changes.

outtamymind

hmm interesting. this issue is messed right up.

Joel

I can also save you the trouble. If you read earlier in this thread you'll see that I have tried a total of three different throttle bodies on my car. Two of which were clean, one of which was all carbon'ed up. The dirty one made my car run normal again, the clean ones were both the same (high idle). The problem is definitely the computer not accounting for the extra air flow which occurs with a clean throttle body as apposed to a dirty one.