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08-14-2011, 06:34 PM
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#1 |
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Registered User
Join Date: Aug 2011
Location: Pasco Wa
Posts: 6
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High Idle
My poor Mach has developed a high idle problem. Have replaced the Potentiometer and Valve ASY-Th with OEM parts.Still have the same problem. Any help would be great
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08-14-2011, 08:35 PM
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#2 |
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8LB YNER
 
Join Date: Mar 2005
Location: Tampa
Posts: 5,661
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Re: High Idle
Sounds like a bad/dirty IAC. Very common for some reason.
__________________
Just because you're winnin' Don't mean you're the lucky ones TR 2003 (Jezebel) sold Mar 12... |
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08-16-2011, 08:19 PM
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#3 |
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Registered User
Join Date: Aug 2011
Location: Pasco Wa
Posts: 6
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Re: High Idle
An IAC ? I'am not sure what that is.
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08-16-2011, 08:23 PM
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#4 |
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LuLz
Join Date: Dec 2003
Location: Cedar Park, TX
Posts: 19,294
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Re: High Idle
IAC = Idle Air Control
__________________
11 Sterling gray GT500 coupe 08 Silver Z06 1058rwhp/1073rwt @ 15psi  14 Silver Q50S Vortech blown 04 DSG Mach 1 (stolen) 03 OW Mach 1 (sitting in a field rotting away) |
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08-16-2011, 08:40 PM
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#5 |
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AUTOMACHTIC
Join Date: Oct 2007
Location: RTP/ N.C.
Posts: 4,813
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Re: High Idle
IAC...Dont even try to clean it ,just replace it.
__________________
UPGRADES...Tokico Illuminas Borla SS Catback , Steeda Underdrives , Strut Brace , HPM Lower K Brace , L /C Arms , U /C Arms , HPM PanHard Bar, K&N FRPK 2, GOODYEAR GT1 , MRT- H-Pipe , JLT VaporTraps , SLP-12'" Tips! , FRPP Shorty 1 5/8 Headers , Brembo D/S & PBR D/S Rotors ,FRPP Alum.DS ,Roys 3/8 Spacer , SVT Focus 255 pump SCTsw Chip PRO-DYNOjet NA 300.01hp /315tq (Auto) ,Innovate W/B ,Compucar Wet Kit (90jet) + Heater and E Gauge * 360 hp/385tq  12.5 -1/4 @112
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08-18-2011, 08:37 PM
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#6 |
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Registered User
Join Date: Aug 2011
Location: Pasco Wa
Posts: 6
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Re: High Idle
thanks i'll give it a go.
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08-18-2011, 08:48 PM
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#7 |
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Registered User
Join Date: Aug 2011
Location: Pasco Wa
Posts: 6
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Re: High Idle
I have replaced the idle air control valve.What about the idle control motor?I have an Acufab throtle body on the car would make any differance?
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08-18-2011, 09:13 PM
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#8 |
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8LB YNER
Join Date: Mar 2005
Location: Tampa
Posts: 5,661
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Re: High Idle
With my Acufab I had my predator hooked up, I read the TPS (throttle position sensor) voltage and had to adjust the voltage down to .94 I think it was (this was like 6 years ago, but the thread on the TPS voltage are in here). This is done by loosening the two TS screws a tad and adjust (rotate) the TPS while looking at the tuner till the proper voltage was achieved. Then just tight the two TPS screws and test drive.
http://www.mach1registry.org/forums/...ht=tps+voltage
__________________
Just because you're winnin' Don't mean you're the lucky ones TR 2003 (Jezebel) sold Mar 12... |
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08-21-2011, 03:47 PM
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#9 |
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Registered User
Join Date: Aug 2011
Location: Pasco Wa
Posts: 6
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Re: High Idle
thanks
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08-23-2011, 03:19 PM
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#10 |
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Registered User
Join Date: Nov 2003
Location: TX.
Posts: 2,511
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Re: High Idle
I put one of these on mine. You might have to enlarge one of the holes if the rpms drop too fast.
http://cgi.ebay.com/ebaymotors/86-04...item19be8cc785 I just put an Accufab TB on a few weeks after the restrictor and nothing changed. The only thing I noticed about the TB is when cruise control is engaged the car speeds up about 2-3 mph and then settles.
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03 Mach DSG Build Date 07/25/03 Feb 09 N2O 10.91 @ 124.21(1.55 60ft) Feb 09 NA 11.85 @ 112.87 (1.60 60ft) |
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08-26-2011, 02:39 PM
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#11 |
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Registered User
Join Date: Aug 2011
Location: Pasco Wa
Posts: 6
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Re: High Idle
For now I'm cheating I made my own gasket with only 1/4" holes. The car will not idle higher than a 1000 rpm. I will buy a programer, and fix it the right way.
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