MustangWorks.com : Ford Forums - View Single Post - Idel goes Up as the motor Warms up...????

Stang Runner · 04-02-2002, 12:30 PM

I Have Instaled many new Parts look at the sig I have not Cats on the car and Remove the Other Crap that goes with them I have No Vac leaks that I know of I have looked and fixed one it is a 1988 using the Stock Ecu thats a S.D. if the Motor is Cold I start it up Runs nice right at 1000-850 and as it get Warmer the Idel goes up to like 1700-1500 after like 3-5Min. I have a new Idel Air Bypass on the car. I still have the ECU coolent temp from 1988 on there might that be going bad????? I remove my MAP with the car on and the Idel drops down to about where it should be a ruff 1000-800.

O I have the staock Cam with 1.72 as well.
Any have any idea what might be doing it?

04-02-2002, 12:30 PM	#1
Stang Runner Registered Member Join Date: Jun 1999 Location: Walker, MI, USA Posts: 1,202	Idel goes Up as the motor Warms up...???? I Have Instaled many new Parts look at the sig I have not Cats on the car and Remove the Other Crap that goes with them I have No Vac leaks that I know of I have looked and fixed one it is a 1988 using the Stock Ecu thats a S.D. if the Motor is Cold I start it up Runs nice right at 1000-850 and as it get Warmer the Idel goes up to like 1700-1500 after like 3-5Min. I have a new Idel Air Bypass on the car. I still have the ECU coolent temp from 1988 on there might that be going bad????? I remove my MAP with the car on and the Idel drops down to about where it should be a ruff 1000-800. O I have the staock Cam with 1.72 as well. Any have any idea what might be doing it? __________________ Engine: steel mounts, Under drive pulleys, K&N, GT-40 Intake ported Lower, No power steering, No A/C, Mac cold intake, 65MM TB, 255 Fuel pump, 24's, AFR 165 58cc, Rocker Arms 1.7with the stock Cam, 1 5/8 short headers, offRoad X-pipe Drive Train: 3.55, T-5 with a Pro 5.0 shifter 12.656@107.71MPH See It at www.T-racing.com/mustang.htm