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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

stalling under braking

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Old Apr 6, 2008 | 10:36 PM
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cscott952
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stalling under braking

I've got an '85 302 EFI. When I disengage the clutch when braking, then engine occassionally stalls when dropping from highway engine speed back to idle. It never stalls unless I am braking. There are no codes, and the IAC/TPS seem fine. I cleaned both real well. There doesn't seem to be any wrong with the braking system either. Anything else to check?
 
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Old Apr 6, 2008 | 10:52 PM
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While it's idling, disconnect the IAC. If the engine totally stalls out, turn the idle stop screw to open the throttle a little bit till the engine idles very slowly. Then plug the IAC back in and try it out.
 
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Old Apr 7, 2008 | 11:02 AM
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Once all connected, should I back the idle set screw back out?
 
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