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Old 12-17-2013, 03:08 PM   #1
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throttle body

What is the function of the screw on a BBK 94-95 throttle body. It is located on the same side of the TPS sensor counter sank in front of it. If you are standing in front of the car it would be top right of throttle body.
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Old 12-17-2013, 03:41 PM   #2
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Should be an idle adjustment. But if you can take a picture, that would help.
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Old 12-17-2013, 04:40 PM   #3
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Old 12-17-2013, 04:50 PM   #4
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Well its not what I said it was......lol
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Old 12-17-2013, 05:12 PM   #5
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That's the idle valve adjustment screw. It should be gold in color, and should be turned clockwise until bottomed out, but not too tight.
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Old 12-17-2013, 06:28 PM   #6
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So it should be closed?

---------- Post added at 05:28 PM ---------- Previous post was at 05:24 PM ----------

If I do that the idle gets to low and it wants to cut off.
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Old 12-17-2013, 06:31 PM   #7
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Well basically yes. It should be just tight enough to bottom out. If you go to bbks website and look at the instructions, you'll see thier recommendation on how to tighten it.

---------- Post added at 08:31 PM ---------- Previous post was at 08:29 PM ----------

Did you just install this? Because you may have to adjust the throttle position screw. Or you can always give them a call and tell them what's going on. I'd say if you habe to back it off a bit for it to run well, then do it. But I would call them if that's the case and see what they say
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Old 12-17-2013, 06:43 PM   #8
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Man. I've been having some issues with the car bucking and jerking. When I touched that screw it was all bad. Not sure if it's that or my mad 6AL box.
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Old 12-17-2013, 06:57 PM   #9
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Well that screw has to do with your IAC valve, so it could have something to do with it. Maybe try to tighten to where it was and reset the computer. But I know those 94-95 ecu's are temperamental lol
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Old 12-17-2013, 06:59 PM   #10
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I'm going to give it a try thanks!
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Old 12-17-2013, 07:08 PM   #11
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Ok good luck man
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Old 12-18-2013, 07:39 AM   #12
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I'd honestly put the stock TB back on if it keeps giving you problems. The 60mm TB that comes on the SN95s is not restrictive, not with the stock HO intake or even an unported GT40.

You can also the idle reset procedure, google it and you should get step by step instructions.
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Old 12-18-2013, 08:28 AM   #13
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Thanks for the info!
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Old 12-18-2013, 08:41 AM   #14
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Setting the Mustang TPS Voltage

dang its been awhile since I had to do this, but you can use that screw and there is a small bolt off the butterfly valve that controls the throttle body that you can use a allen wrench and you can adjust your idle and dial it in at set you tps to the right voltage.

---------- Post added at 08:41 AM ---------- Previous post was at 08:40 AM ----------

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Originally Posted by mystang50 View Post
Setting the Mustang TPS Voltage

dang its been awhile since I had to do this, but you can use that screw and there is a small bolt off the butterfly valve that controls the throttle body that you can use a allen wrench and you can adjust your idle and dial it in at set you tps to the right voltage.
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