sudden low idle

[quackmandude]

it was brand new the reman was cheaper
SAMSUNG-SGH-I617/1.0 Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.6)

[Stealthee]

Originally Posted by quackmandude

it was brand new the reman was cheaper
SAMSUNG-SGH-I617/1.0 Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.6)

It wasnt straight from Mitsubishi. It was BWD brand.

[AutostradaVR4]

Alright, got the new IAC in today and it runs like a champ. But on the old ISC there was alot of carbon, like it was in the exhaust. It this normal? or should i be worried...

Also, what is the black thing bolted on the front of the throttle body? what does it do?
I removed it before realizing that it was adjustable and noting its position.

[Stealthee]

You talking about the BISS?

[quackmandude]

no mine was the same way man. u should be ok.
SAMSUNG-SGH-I617/1.0 Mozilla/4.0 (compatible; MSIE 6.0; Windows CE; IEMobile 7.6)

[hybk4041]

My 94 is doing the same thing. It will idle just fine when starting be after a few minutes it drops down to around 400 and holds steady. It hasn't died on me but it is really close. Do you know if there is a way to check the IAC? I don't think that is my problem I am thinking I have a bad vacuum leak somewhere. Any help would be great.

Thanks,

[Stealthee]

Originally Posted by hybk4041

My 94 is doing the same thing. It will idle just fine when starting be after a few minutes it drops down to around 400 and holds steady. It hasn't died on me but it is really close. Do you know if there is a way to check the IAC? I don't think that is my problem I am thinking I have a bad vacuum leak somewhere. Any help would be great.

Thanks,

From previous helping

Originally Posted by Stealthee

You can test it while on the car.

All you need is a multimeter.

Test the continuity across the pins. There will be six pins, 3 in each row.

123
456

Test continuity across pins 1 and 2, pins 2 and 3, pins 4 and 5, and pins 5 and 6.

Continuity should be around 28-33 ohms if its an old style beige ISC.

If you get no continuity between any two pins then the ISC is shot.

If you find out yours is bad you can get one at rockauto.com for $72.79

More Information for STANDARD MOTOR PRODUCTS AC99 Its part number AC99

[hybk4041]

Thanks, I completly missed that entire part about testing. I will check it this weekend and let you know what comes about. Thanks again.

[Stealthee]

Originally Posted by hybk4041

Thanks, I completly missed that entire part about testing. I will check it this weekend and let you know what comes about. Thanks again.

I think this is the first time I've posted that here, but I keep it handy since it comes up often. Good luck and be sure to post up the results.