High idle

b00zt3d spyd3r · Apr 24, 2016

Today I noticed my car wasn't running quite right. I looked under the hood and noticed my j pipe was loose...again... Tightened them up and went to Walmart to get coolant was fine. Put coolant in and now it is idling high. Idk if that has anything to do with it but I've looked everywhere for boost/vacuum leaks made sure everything was tight and in place. Iac is good car idled even higher with it unplugged. Idk what else to try. HELP!!

Caleb4G63T · Apr 24, 2016

b00zt3d spyd3r said:
Today I noticed my car wasn't running quite right. I looked under the hood and noticed my j pipe was loose...again... Tightened them up and went to Walmart to get coolant was fine. Put coolant in and now it is idling high. Idk if that has anything to do with it but I've looked everywhere for boost/vacuum leaks made sure everything was tight and in place. Iac is good car idled even higher with it unplugged. Idk what else to try. HELP!!

Try unplugging the Idle Air Control, and plugging it back in, also try unhooking the battery for 30 sec.

b00zt3d spyd3r · Apr 24, 2016

Caleb4G63T said:
Try unplugging the Idle Air Control, and plugging it back in, also try unhooking the battery for 30 sec.

Did that. Didn't help. I'm stumped on this and need it right by Tuesday for work

tsi617 · Apr 24, 2016

Bleed the coolant of air. You may have a weird air pocket the ECU is compensating for.

Do 2gs have faiv?

b00zt3d spyd3r · Apr 25, 2016

tsi617 said:
Bleed the coolant of air. You may have a weird air pocket the ECU is compensating for.

Do 2gs have faiv?

Not exactly sure on the fair but how do you bleed the coolant

JFPryde · Apr 25, 2016

tsi617 said:
Bleed the coolant of air. You may have a weird air pocket the ECU is compensating for.

Do 2gs have faiv?

Yes but it shouldn't be an issue unless it's really cold.

OP, is it staying at high idle or is it pulsing up and down?

b00zt3d spyd3r · Apr 25, 2016

JFPryde said:
Yes but it shouldn't be an issue unless it's really cold.

OP, is it staying at high idle or is it pulsing up and down?

No its pretty steady where it idles. Might jump 100 rpms every now and then but steady for the most part

tsi617 · Apr 25, 2016

To bleed air from the coolant, open the coolant cap and set it aside on a COLD engine. Run the motor to operating temp and wait for coolant to bubble out and reinstall the cap. Normally I do this, then drive around and try again after the car is cool. You will see air like a gulp in the coolant.

tsi617 · Apr 25, 2016

What exactly is the range it's idling in?

b00zt3d spyd3r · Apr 25, 2016

About 1600

tsi617 · Apr 25, 2016

have you checked your throttle body, biss screw, or bov for leaks? I know you said you did a test but the biss is a good place for air to enter.

My bov spring crapped out and caused a idle issue.

Boomdeeze · Apr 25, 2016

I know you said you looked for boost/vacuum leaks but did you actually perform a boost leak test? Just want to make sure. If your J-pipe was loose, I would start looking there for leaks. I have never had an air pocket in the coolant cause a high idle, idling at 1600 is high for an ECU to compensate to.

tsi617 · Apr 25, 2016

It was a stretch however it's the only part of the coolant system that plays into efi. Also wouldn't be bad to do if he was running air into the system just for the coolant to do the best possible job.

If he did a blt then the jpipe isn't an issue, if not, great place to start.

b00zt3d spyd3r · Apr 25, 2016

No i didn't actually do a blt. I don't have anything to test. I just looked at all my ic piping and vacuum lines made sure they were all tight and in place. Is my car okay to drive till I find out the high idle reason?

lasershark · Apr 25, 2016

High idle? Do a blt (boost leak test)

b00zt3d spyd3r · Apr 25, 2016

lasershark said:
High idle? Do a blt (boost leak test)

I don't have the tools or equipment to do that...

lasershark · Apr 25, 2016

You can make one for all of 10 bucks with stuff from home depot and then get a cheap air compressor. Kind of a must with these (or any) turbo cars.

Caleb4G63T · Apr 25, 2016

You also could do a quick, but less effective one by starting it up, and spraying soapy water on the turbo piping. All you need is a spray bottle, soapy water.

b00zt3d spyd3r · Apr 25, 2016

Tested with carb cleaner and no leaks

ThunderChild · Apr 26, 2016

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Watch this, make a BLTester. Check for leaks that way. Carb cleaner and soap/water won't do much, The system has to be under pressure.

I'm going to say you need to burp the coolant more, sounds like the FIAV might not be seeing coolant to close down when it warms up.

Boomdeeze · Apr 26, 2016

Build a boost leak tester and do it right. If you don't want to do the proper tests to trouble shoot then don't ask why your car is running weird. Here is a checklist to eliminate concern with your recent mishap:
1: Build a boost leak tester
2: Do a boost leak test
3: Burp your coolant (Will eliminate any coolant concern)
4: Report back after all is done

b00zt3d spyd3r · Apr 26, 2016

Boomdeeze said:
Build a boost leak tester and do it right. If you don't want to do the proper tests to trouble shoot then don't ask why your car is running weird. Here is a checklist to eliminate concern with your recent mishap:
1: Build a boost leak tester
2: Do a boost leak test
3: Burp your coolant (Will eliminate any coolant concern)
4: Report back after all is done

I'm sorry I don't have a whole lot of knowledge on this situation just trying to get some help. Will be making a blt sometime this week and will get back with yall

b00zt3d spyd3r · Apr 26, 2016

This what it's lookin like. Not over heating. Just revs high at idle sits steady no surge. All I keep hearing is iac or fiav. I'm ready to but the part just trying to find out for sure which one it'll be

ThunderChild · Apr 26, 2016

Don't buy anything until you do the tests we mentioned and burp the coolant properly.

If you suspect the iac (I don't) then test the coils with a multimeter. Here's a video on that.

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The FIAV isn't cheap, it requires a whole new TB iirc. Many just delete it, if they're in a warmer climate, with no problems.

Don't just throw parts at it, that's a excellent way to get frusterated and waste money, all while learning nothing.

b00zt3d spyd3r · Apr 26, 2016

tametalon92 said:
Don't buy anything until you do the tests we mentioned and burp the coolant properly.

If you suspect the iac (I don't) then test the coils with a multimeter. Here's a video on that.

You must be logged in to view this image or video.

The FIAV isn't cheap, it requires a whole new TB iirc. Many just delete it, if they're in a warmer climate, with no problems.

Don't just throw parts at it, that's a excellent way to get frusterated and waste money, all while learning nothing.

Like with a fiav block off plate? I'm in Oklahoma so it's pretty warm till winter time

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