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post #1 of 4 (permalink) Old 05-30-01, 12:27 PM
Don T
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Throttle Body Stop Screw

Does anyone know the adjustment procedure for it:confused:

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post #2 of 4 (permalink) Old 05-30-01, 01:14 PM
Ben L
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Hey Don, welcome to FordForums!

I do have the answer to your question, but unfortunately it's saved on my hard drive at home. I get off work at 6 pm, so I'll post the info on here after that.

post #3 of 4 (permalink) Old 05-30-01, 01:21 PM
Don T
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Ben L,

Thanks for the welcome, will be looking for the info.

post #4 of 4 (permalink) Old 05-30-01, 04:35 PM
Ben L
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Ok Tim here you go, I got this from Sven Pruett at Vanir Technologies. This is for a 4.0, but it may work with the computer on your 3.0 (if, by guessing from your other posts, you do have a 3.0)

Hope this helps!


>Here is the idle setting procedure we recommend:
>"In some cases, the installation of a larger throttle body will result in
>idle speed that is slightly higher than normal. If this condition occurs,
>base idle setting will need to be re-set according to the following
>NOTE: Engine should be at normal operating temperature before performing
>1) Turn off all accessories & disconnect the battery for 5 minutes.
>2) Reconnect battery. Disconnect the Idle Speed Control (ISC) solenoid
>located just behind the throttle body on the drivers side of the upper
>3) With the truck in NEUTRAL, run the engine at 2500 rpm for 30 seconds.
>4) Let the engine idle for 2 minutes.
>5) Put the truck in PARK (or NEUTRAL if manual trans.) and adjust the idle
>speed stop screw until the idle is at 700rpm.
>6) Turn engine off and let sit for 2 minutes then repeat steps 1-5 once.
>7) Disconnect battery for 5 minutes then reconnect.
>8) Reconnect the Idle Speed Control (ISC) solenoid.
>9) Run the engine at idle for 2 minutes.
>10) Quickly depress the accelerator pedal to the floor and release it
>immediately, allowing the engine to return to idle.
>11) Lightly depress and release the accelerator allowing the engine to
>to idle.
>After carefully following the above steps, the engine should now have reset
>its base idle to factory specifications. The idle should now be smooth and
>approximately 700rpm at operating temperature. If this procedure does not
>correct the fast idle condition, carefully check for vacuum leaks at the
>throttle body flange gasket and at the intake snorkel to throttle body
>interface. If no vacuum leaks are detected and the condition still exists,
>condition that is unrelated to the mechanical throttle body assembly exists
>and must be diagnosed and repaired."
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