do these cars ever idle correctly? - 3000GT/Stealth International Message Center

91rtstealth · 10-24-2007, 07:13 AM

It seems like every time I get this car running perfectly, something else has to go wrong with it...despite it's 52k miles...

last year, the car just started stalling...the idle was bumped up a little to tack care of it temporarily...yesturday, I cleaned the idle speed controller with electronics parts cleaner...it did nothing...i took another used idle air speed controller from a car "that ran perfectly", cleaned it, put it in..and now my car just falls from 2K to 1K about 2 tiems a second..up and down...up and down..and then on the way home, it worked good for about 2 minutes...then up and down..the freaking air idle screw is all the way in (or out), whichever direction lowers the idle...and the car still idles high and retarded...what the hell can I do to fix this thing....i know there is a procedure to adjust the idle..but I searched the archives and I can't find anything about that..

IamHimeros · 10-24-2007, 07:17 AM

clean your mas and also the seal on the BISS screw might be bad or you have a leak on your TB

OhioSpyderman · 10-24-2007, 07:28 AM

Maybe this will help....

According to the chart there are at least 8 things to check....

Bob.

Highboosted · 10-24-2007, 07:34 AM

Quote:

Originally Posted by 91rtstealth

and now my car just falls from 2K to 1K about 2 tiems a second..up and down...up and down..and then on the way home, it worked good for about 2 minutes...then up and down..the freaking air idle screw is all the way in (or out), whichever direction lowers the idle...and the car still idles high and retarded...what the hell can I do to fix this thing....i know there is a procedure to adjust the idle..but I searched the archives and I can't find anything about that..

That "perfect" IAC is probly bad. Sounds like you have a vac leak also.

Base idle adjustment, search the wiki.

91rtstealth · 10-24-2007, 07:44 AM

with my original idle speed controller..the idle isn't horrible..i just have to bump the idle up a bit...however, when I start the car...it tries to rev up super quickly, but then drops right down to idle...it's like there's a surge of throttle and then the ECU catches it and drops it down to idle...any idea what that could be?

with this other IAC...it just idles retarded-like..hah..

the other thing I noticed that this goofy car does...is when you are in 1st, just moving slow..10 miles an hour maybe...barely on the throttle..the car will jerk back and forth real lightly..as if you are JUST missing the pedal..know what i mean? like you are opening and closing the throttle by the tiniest amount....it's so damn annoying..would that have something to do with the incorrect air for idle?

91rtstealth · 10-24-2007, 07:45 AM

also..forgot to ask..how do you clean the mass? what exactly do you clean..and do you just spray it with elec. parts cleaner?

WhiteR/T · 10-24-2007, 07:52 AM

Dude, you and I are having the EXACT same problems. Not even funny. My car does the idle up and down thing, I have tried the biss screw and I have checked the resistance on the IAC. My car jerks real fast in first, too. I have tried a few things, and I am getting a little annoyed. I'm looking forward to more suggestions.

91rtstealth · 10-24-2007, 07:56 AM

well i'm glad i'm not the only one..hah...where is the BISS screw? the only screw I know of is the SIS screw...

WhiteR/T · 10-24-2007, 08:19 AM

Quote:

Originally Posted by 91rtstealth

well i'm glad i'm not the only one..hah...where is the BISS screw? the only screw I know of is the SIS screw...

Right on top of the throttle body under a rubber plug. I think I turned it in to adjust idle down.

i3igpete · 10-24-2007, 08:22 AM

hunting idle and bucking under load sounds like a big vacuum leak

10-24-2007, 07:13 AM	#1 (permalink)
91rtstealth Dru Join Date: Sep 2002 Location: Lehighton, PA Drives: 91 Stealth R/t Stock Trader Rating: (0)	do these cars ever idle correctly? It seems like every time I get this car running perfectly, something else has to go wrong with it...despite it's 52k miles... last year, the car just started stalling...the idle was bumped up a little to tack care of it temporarily...yesturday, I cleaned the idle speed controller with electronics parts cleaner...it did nothing...i took another used idle air speed controller from a car "that ran perfectly", cleaned it, put it in..and now my car just falls from 2K to 1K about 2 tiems a second..up and down...up and down..and then on the way home, it worked good for about 2 minutes...then up and down..the freaking air idle screw is all the way in (or out), whichever direction lowers the idle...and the car still idles high and retarded...what the hell can I do to fix this thing....i know there is a procedure to adjust the idle..but I searched the archives and I can't find anything about that..

10-24-2007, 07:17 AM	#2 (permalink)
IamHimeros fel8me Join Date: Feb 2005 Location: Tucson, AZ Drives: 06 Acura RSX Type-S Trader Rating: (29)	Re: do these cars ever idle correctly? clean your mas and also the seal on the BISS screw might be bad or you have a leak on your TB __________________

10-24-2007, 07:44 AM	#5 (permalink)
91rtstealth Dru Join Date: Sep 2002 Location: Lehighton, PA Drives: 91 Stealth R/t Stock Trader Rating: (0)	Re: do these cars ever idle correctly? with my original idle speed controller..the idle isn't horrible..i just have to bump the idle up a bit...however, when I start the car...it tries to rev up super quickly, but then drops right down to idle...it's like there's a surge of throttle and then the ECU catches it and drops it down to idle...any idea what that could be? with this other IAC...it just idles retarded-like..hah.. the other thing I noticed that this goofy car does...is when you are in 1st, just moving slow..10 miles an hour maybe...barely on the throttle..the car will jerk back and forth real lightly..as if you are JUST missing the pedal..know what i mean? like you are opening and closing the throttle by the tiniest amount....it's so damn annoying..would that have something to do with the incorrect air for idle?

10-24-2007, 07:45 AM	#6 (permalink)
91rtstealth Dru Join Date: Sep 2002 Location: Lehighton, PA Drives: 91 Stealth R/t Stock Trader Rating: (0)	Re: do these cars ever idle correctly? also..forgot to ask..how do you clean the mass? what exactly do you clean..and do you just spray it with elec. parts cleaner?

10-24-2007, 07:52 AM	#7 (permalink)
WhiteR/T One too many projects... Join Date: Oct 2007 Location: New Richmond, WI Drives: Stock 92 Stealth R/T Trader Rating: (2)	Re: do these cars ever idle correctly? Dude, you and I are having the EXACT same problems. Not even funny. My car does the idle up and down thing, I have tried the biss screw and I have checked the resistance on the IAC. My car jerks real fast in first, too. I have tried a few things, and I am getting a little annoyed. I'm looking forward to more suggestions.

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10-24-2007, 07:56 AM	#8 (permalink)
91rtstealth Dru Join Date: Sep 2002 Location: Lehighton, PA Drives: 91 Stealth R/t Stock Trader Rating: (0)	Re: do these cars ever idle correctly? well i'm glad i'm not the only one..hah...where is the BISS screw? the only screw I know of is the SIS screw...

10-24-2007, 08:22 AM	#10 (permalink)
i3igpete ''the professor'' Join Date: Feb 2005 Location: Chicago, IL Drives: GoPigGo v2.0 Trader Rating: (76)	Re: do these cars ever idle correctly? hunting idle and bucking under load sounds like a big vacuum leak __________________ Maddog Performance Engineering the gas pedal does nothing