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08-02-2004, 08:11 AM
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#1 |
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Mizzou Tigers
Join Date: Apr 1999
Location: weston, MO United States
Posts: 1,455
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High idle
My Stang is still idling high. I have set the TPS, replaced the IAB, and replaced the computer. I can't find any vacuum leaks and don't see anywhere where the cable might be getting stuck.
It is an intermittent problem and when it happens my idle sticks around 2000 rpm. Even when it is not sticking, I can't get the car to idle below about 1200, even though I have the idle screw backed competely out. What else can I look at? Could my TPS be bad? What resistance should it show? This is really starting to get frustrating 
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2006 Mustang GT 1990 LX GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved) 1998 Contour SVT Rice Haters Club Member #244 |
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08-02-2004, 10:29 AM
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#2 |
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Gimme a Drink!
Join Date: Dec 2002
Location: NYC
Posts: 694
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tps should be under 1 volt, around .98-.99
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1990 GT,stock T-5,K&N w/o air silencer,March underdrives,FMS wires,timing@14*,PA Perf 130amp alt,Steeda Tri-Ax Shifter,Steeda adj quadrant/clutch cable/firewall adj,Centerforce II clutch,o/r x-pipe,Magnaflow SS catback,g-load brace, subframes,Bilstein struts/shocks,Autometer gauges, 136k and running strong! |
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08-02-2004, 10:55 AM
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#3 |
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Registered Member
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
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Hook a vacuum gauge up. You may have a hard to find leak.
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
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08-02-2004, 06:01 PM
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#4 | |
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Mizzou Tigers
Join Date: Apr 1999
Location: weston, MO United States
Posts: 1,455
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Quote:
Dark5.0 - That is one thing I haven't done. Is there a procedure somewhere for doing that?
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2006 Mustang GT 1990 LX GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved) 1998 Contour SVT Rice Haters Club Member #244 |
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08-02-2004, 09:33 PM
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#5 |
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Domestic Rice really sucks!
Join Date: Apr 2002
Location: KY
Posts: 973
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Sounds like vacuum leak to me. I usually just use a can of ether or carb cleaner to find vacuum leaks.
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The sig says it all. 
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08-02-2004, 11:40 PM
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#6 |
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Registered Member
Join Date: Aug 2004
Posts: 2
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my bet it's a vacuum leak. Check this out http://www.users.bigpond.com/ergoff/vac1.htm
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08-03-2004, 07:06 PM
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#7 |
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Registered Member
Join Date: Aug 2002
Location: Rochester
Posts: 553
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did u clean out your idle air control motor ( iac )? it could be sticking causing your idle issue.
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08-04-2004, 05:45 PM
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#8 | |
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Mizzou Tigers
Join Date: Apr 1999
Location: weston, MO United States
Posts: 1,455
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Quote:
Thanks for all the replies guys but, it looks like it is not my problem anymore. I ended up selling the Stang las night  . It was my baby and I loved it, but I had to do it for now. I am going to use the money towards a house next spring. Then, once I have a garage, I can start all over  !
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2006 Mustang GT 1990 LX GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved) 1998 Contour SVT Rice Haters Club Member #244 |
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