YACT: Check engine + rough idle after sitting for the better part of 2-3 months?

[natto fire]

Originally posted by: Viper GTS
Well I got carb cleaner but I couldn't get the bolts out (too old/rusty). I finally just said "screw it" and took it for a drive. The problem seems to have gone away, & it's back to its usual self.

Should I just take it somewhere (eventually) and get the sensor replaced? Or just not worry about it unless it proves troublesome?

Viper GTS

It is actually a solenoid, and they are usually fairly pricey. Are you sure you were taking off the right part? It should not be rusty as it is aluminum and usually bolted to aluminum(TB). I know that corrosion can sometimes build up on the bolts if coolant has gotten on them (from the IAC itself, or another way). Since it is not a critical part, you should definitely just wait until it gives a problem again. It is mostly there to increase air to the manifold if you have high-draw accessories (A/C, etc.) and on some car's, to fast idle the engine when it is cold. (Some have mechanical means of doing this and rely on the electronic IAC for load only)

 

[Nutdotnet]

Hmm, wow,

It was condensation man. You had water in your lines. Some of the responses in here are hilarious. I'm not even a mechanic, I just live in a cold weather state.

Next time, throw some HEET in your tank to get the water out.

 

[Vic]

The IAC is the idle air control solenoid that regulates the idle speed when the engine is cold. If that is acting up, then the problem would go away after a drive to warm it up, but it will come back at the next cold start. The throttle body is easily located on top of the engine where the plastic air filter housing connects to the intake manifold. You will see the throttle cable (or cables if your car has cruise control). Don't use regular carb cleaner. Get GM Top Engine Cleaner in the spray can. Remove the air filter housing exposing the throttle body. Start the car and have someone inside to maintain about 1200 rpm. Spray engine cleaner into throttle body about 15 seconds at a time. The engine will try to die and huge clouds of smoke will come out the exhaust. Repeat a few times. Then reconnect the air filter housing. To clear the CEL code out of the ECU, disconnect the battery for 30 minutes.

 

[natto fire]

Originally posted by: Nutdotnet
Hmm, wow,

It was condensation man. You had water in your lines. Some of the responses in here are hilarious. I'm not even a mechanic, I just live in a cold weather state.

Next time, throw some HEET in your tank to get the water out.

I take it you did not read the thread? Condensation does not throw a CEL for IAC (which was what was suggested by the more knowledgeable car people). Your response is hilarious if you actually read the thread, because he already pinpointed it through the OBD. So maybe you should just stick to living in that cold weather state.

 

[Shawn]

Originally posted by: Viper GTS
Well I got carb cleaner but I couldn't get the bolts out (too old/rusty). I finally just said "screw it" and took it for a drive. The problem seems to have gone away, & it's back to its usual self.

Should I just take it somewhere (eventually) and get the sensor replaced? Or just not worry about it unless it proves troublesome?

Viper GTS

Don't worry about it. My car hasn't idled properly since I have owned it. It's been 3 years now and it still drives fine, it just doesn't idle for sh|t.

 

[Zanix]

Originally posted by: sao123
replace air and fuel filters.

Look for nests too.


Edit: Oops! should have read to the end.

 

[Viper GTS]

Originally posted by: Vic
The IAC is the idle air control solenoid that regulates the idle speed when the engine is cold. If that is acting up, then the problem would go away after a drive to warm it up, but it will come back at the next cold start. The throttle body is easily located on top of the engine where the plastic air filter housing connects to the intake manifold. You will see the throttle cable (or cables if your car has cruise control). Don't use regular carb cleaner. Get GM Top Engine Cleaner in the spray can. Remove the air filter housing exposing the throttle body. Start the car and have someone inside to maintain about 1200 rpm. Spray engine cleaner into throttle body about 15 seconds at a time. The engine will try to die and huge clouds of smoke will come out the exhaust. Repeat a few times. Then reconnect the air filter housing. To clear the CEL code out of the ECU, disconnect the battery for 30 minutes.

So I don't actually need to pull the IAC solenoid off? The bolts are horizontal & I couldn't get enough pressure on them to keep them from stripping. They are quite rusty & look like they haven't been touched since it rolled off the factory line.

This is the page I was using for reference:

http://www.ttugly.com/iac.pdf

I was trying to remove the two bolts labelled T2, I got the top one out but the bottom one just wouldn't move. :|

Viper GTS

 

[Pepsi90919]

Originally posted by: Viper GTS

Originally posted by: Vic
The IAC is the idle air control solenoid that regulates the idle speed when the engine is cold. If that is acting up, then the problem would go away after a drive to warm it up, but it will come back at the next cold start. The throttle body is easily located on top of the engine where the plastic air filter housing connects to the intake manifold. You will see the throttle cable (or cables if your car has cruise control). Don't use regular carb cleaner. Get GM Top Engine Cleaner in the spray can. Remove the air filter housing exposing the throttle body. Start the car and have someone inside to maintain about 1200 rpm. Spray engine cleaner into throttle body about 15 seconds at a time. The engine will try to die and huge clouds of smoke will come out the exhaust. Repeat a few times. Then reconnect the air filter housing. To clear the CEL code out of the ECU, disconnect the battery for 30 minutes.

So I don't actually need to pull the IAC solenoid off? The bolts are horizontal & I couldn't get enough pressure on them to keep them from stripping. They are quite rusty & look like they haven't been touched since it rolled off the factory line.

This is the page I was using for reference:

http://www.ttugly.com/iac.pdf

I was trying to remove the two bolts labelled T2, I got the top one out but the bottom one just wouldn't move. :|

Viper GTS

with the time you're wasting posting this on ATOT you could be out scanning the code.

 

[Vic]

Originally posted by: Pepsi90919

Originally posted by: Viper GTS

Originally posted by: Vic
The IAC is the idle air control solenoid that regulates the idle speed when the engine is cold. If that is acting up, then the problem would go away after a drive to warm it up, but it will come back at the next cold start. The throttle body is easily located on top of the engine where the plastic air filter housing connects to the intake manifold. You will see the throttle cable (or cables if your car has cruise control). Don't use regular carb cleaner. Get GM Top Engine Cleaner in the spray can. Remove the air filter housing exposing the throttle body. Start the car and have someone inside to maintain about 1200 rpm. Spray engine cleaner into throttle body about 15 seconds at a time. The engine will try to die and huge clouds of smoke will come out the exhaust. Repeat a few times. Then reconnect the air filter housing. To clear the CEL code out of the ECU, disconnect the battery for 30 minutes.

So I don't actually need to pull the IAC solenoid off? The bolts are horizontal & I couldn't get enough pressure on them to keep them from stripping. They are quite rusty & look like they haven't been touched since it rolled off the factory line.

This is the page I was using for reference:

http://www.ttugly.com/iac.pdf

I was trying to remove the two bolts labelled T2, I got the top one out but the bottom one just wouldn't move. :|

Viper GTS

with the time you're wasting posting this on ATOT you could be out scanning the code.

He already scanned the code. It was 24 -- IAC solenoid.

ViperGTS, I was reading from this -- Text

 

[Nutdotnet]

Originally posted by: Captain Howdy

Originally posted by: Nutdotnet
Hmm, wow,

It was condensation man. You had water in your lines. Some of the responses in here are hilarious. I'm not even a mechanic, I just live in a cold weather state.

Next time, throw some HEET in your tank to get the water out.

I take it you did not read the thread? Condensation does not throw a CEL for IAC (which was what was suggested by the more knowledgeable car people). Your response is hilarious if you actually read the thread, because he already pinpointed it through the OBD. So maybe you should just stick to living in that cold weather state.

No, I did until I started reading "replace belts, hoses, blah...blah...blah...

Sorry, I guess I glanced over the IAC bit...

Ownage, 8/10...thanks for being nice about it.

Although honestly, if it was me, I'd still probably run a bottle of heet through it.

 

[natto fire]

Originally posted by: Nutdotnet

Originally posted by: Captain Howdy

Originally posted by: Nutdotnet
Hmm, wow,

It was condensation man. You had water in your lines. Some of the responses in here are hilarious. I'm not even a mechanic, I just live in a cold weather state.

Next time, throw some HEET in your tank to get the water out.

I take it you did not read the thread? Condensation does not throw a CEL for IAC (which was what was suggested by the more knowledgeable car people). Your response is hilarious if you actually read the thread, because he already pinpointed it through the OBD. So maybe you should just stick to living in that cold weather state.

No, I did until I started reading "replace belts, hoses, blah...blah...blah...

Sorry, I guess I glanced over the IAC bit...

Ownage, 8/10...thanks for being nice about it.

Although honestly, if it was me, I'd still probably run a bottle of heet through it.

Definitely would not hurt, and it is pretty cheap. It wasn't until I read that other thread about the guy living in Faribanks, that I realized you live in Alaska, so you are definitely the authority of COLD weather driving. We haven't even had a snow cover for more than 4-5 days here in Ohio, and it has been very mild. I miss the great Ohio winters I remember from childhood.