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post #1 of 4 (permalink) Old 04-23-03, 10:09 PM Thread Starter
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Join Date: Aug 2002
Location: Hoppers Crossing, VIC
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IDLE speed control

I have an 89EA 3spd auto.

Has any one had problems with their ISC motor, I think mine is sticking.??

The car is idling extremelly high. If I put the car in drive and release the brake it will go by itself up to 45km/h. If I am on the freeway doing 110km/h and I take my foot off the gas the car will stay at that speed even on a slight incline, and on the flat it will slowely excellerate.

When I stop the car I have to wait around 20-25sec before I turn it off because it is idling way too high.

As I said at the start I think it is the ISC motor.
If anyone has any other ideas I would like to know.
If you have replaced one what did it cost???

Thanks heaps
Chris_EA


89 EA. 4 wheels, engine, steering wheel. That's about it.
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post #2 of 4 (permalink) Old 04-23-03, 10:43 PM
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Hi Chris if your car is a centre point efi motor most of the time the idle problem stem from the throttle posistion sensor.To fix this it you have to modify the sensor. To this you remove it and elong gate the holes to allow the sensor to be rotated anti clockise when looking from back of engine. half to 3/4 screw head distance should be enough.it is best disconnect the computer before restarting to rest it. this is a mod that i and ford came up with when i worked for a dealer ship on the coast when ea's were new. hope this helps
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post #3 of 4 (permalink) Old 04-23-03, 11:11 PM
 
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If you car were an manual, id say the clutch would be a possible reason. But as you car is auto, i dunno...

1966 Blue Ford Galaxie - 4Dr Sedan, Pwr Steering, 302 Windsor, Edelbrock Performer Intake Manifold, 650 Holley Race Custom , Crow Cam 15666, Rollmaster Camgear, Heads Ported, MSD 6AL Ignition, MSD Billet Dizzy, Crane Energizer Roller Rockers, C4 - Stage 2 Shift Kit, HiStall 2500rpm, B&M Z-Gate Shifter, XY GT Radiator, 2.92 9" Diff, Dual Thermofans, 2.25" Dual Exhaust, RCI 16gal Fuel Cell.
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post #4 of 4 (permalink) Old 04-24-03, 12:01 AM Thread Starter
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ISC

I took the ISC motor out and got rid of all the gunk that was in and around it.

It works fine now, but as is always the case when you disconnect the battery all seems well. I'll see how it is in a couple of days.

89 EA. 4 wheels, engine, steering wheel. That's about it.
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