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Wrench Therapy Inc.
 
Join Date: Aug 2012
Location: Northwest Louisiana
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Throttle body screw, what does it do?

I just rebuilt my throttle body and I'm curious to what the large brass screw on the front of it Adjusts. I followed the instructions to the letter and not having any problems with the car but a light rough idle at start up. does this crew adjust that Idlel when starting the car.

Old 04-28-2013, 05:54 PM
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If the rough idle is limited to start up, you may want to test the settings from the DME Temp Sensor and confirm all vacuum leaks have been corrected.

Troubleshooting - Engine

The screw adjust the idle. Lindsey Racing has the procedure. My memory is the idle should be closer to 950 +/- 50. The Turbo version should be 850 +/- 50.
Old 04-29-2013, 06:15 AM
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Toofah King Bad
 
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See Clark's for procedure. The screw is idle air bypass. IAC must be disabled prior to adjustment.
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Old 04-29-2013, 06:53 AM
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Wrench Therapy Inc.
 
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Exclamation

Since I Have used a 1985. dme, the one I can put a fr Wilks chip in, do I need to use a dme temp sensor for the 1985.5 dme or are they the sensors, all the same?
Old 04-29-2013, 07:11 PM
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Wrench Therapy Inc.
 
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Furthermore, all top end service has been done. all new hoses, fuel lines vacuum, intake gaskets, injectors by witchunter, TB rebuilt, and full tune up. Thanks guys. by the way, where is location of dme temp sensor?
Old 04-29-2013, 07:16 PM
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1988 944 2.5L 8-v NA 301k
 
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Quote:
Originally Posted by Garo156 View Post
Furthermore, all top end service has been done. all new hoses, fuel lines vacuum, intake gaskets, injectors by witchunter, TB rebuilt, and full tune up. Thanks guys. by the way, where is location of dme temp sensor?
Location: DME Temp Switch Testing
(Thx Arnnworx)

When I changed my Dme TS and my O2, so many ills were corrected.
Good luck..
Mike
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Old 04-30-2013, 03:27 AM
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On my phone so can't see you signature (where ya live and year/ kind of car(s) you have), but I'm guessing you have an early model, and swaped the AFM/DME from a late model into your early 944. Yes you can chip the the late DME in your early car, and no need to change the DME temp sensor. What FRWilk chip do you have? I have the 3.5k chip in mine, like it, but it wasn't an earth shattering difference. A little better in the 3.5- 5.5k range I think. Forget what the tests said on FRWilks site.

Old 04-30-2013, 04:27 AM
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