ported throttle body sticking!!!
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From: TEXAS
ported throttle body sticking!!! I just got done porting and epoxing my throttle body. When the car is not running the throttle body does not stick at all, if opens and closes smooth. When I have the car on, the throttle blade gets stuck close when the accelarator is not being pushed. Its almost like there is a strong vacuum holding the blade closed. Any suggestions on what to look at?
<small>[ July 28, 2002, 11:20 PM: Message edited by: felton316 ]</small>
<small>[ July 28, 2002, 11:20 PM: Message edited by: felton316 ]</small>
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From: new england
Re: ported throttle body sticking!!! You need to open throttle slightly more with idle set screw, when T.B. heats up it enlarges and throttle falls in, causing sticking.You could try loosening throttle shaft screws and realigning blade, but more than likely you just need to bump up idle speed.
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From: TEXAS
Re: ported throttle body sticking!!! Well, the car idles fine and the blade doesn't stick when the car is off, whether its warm or cold. It only sticks while the engine is running. It feels like their is a vacuum holding it shut. It requires a little force to 'break' the vacuum, but after that it screams. It makes it a little hard to start slowly from a stop. I have not changed or messed with the idle set screw of the blade alignment. All I did was ground down the ridge in the TB and epoxy the non-round part (I did drill two holes for the IAC and the other thing).
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From: Lewisville, Texas
Re: ported throttle body sticking!!! Felton,
you have the Throttle postion sensor angle set to low. You need to set the angle for a specific voltage I can'tremember the exact voltage.What's happening is the bottom of the blade is actualy moving to far forward due to lack of voltage mine did this. You have to measure the voltage and get it to the minimum voltage setting and it will stop doing that. I think the min voltage is 4.5 volts but I could be incorrect.
Mark
you have the Throttle postion sensor angle set to low. You need to set the angle for a specific voltage I can'tremember the exact voltage.What's happening is the bottom of the blade is actualy moving to far forward due to lack of voltage mine did this. You have to measure the voltage and get it to the minimum voltage setting and it will stop doing that. I think the min voltage is 4.5 volts but I could be incorrect.
Mark
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From: new england
Re: ported throttle body sticking!!! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by felton316:
<strong>Well, the car idles fine and the blade doesn't stick when the car is off, whether its warm or cold. It only sticks while the engine is running. It feels like their is a vacuum holding it shut. It requires a little force to 'break' the vacuum, but after that it screams. It makes it a little hard to start slowly from a stop. I have not changed or messed with the idle set screw of the blade alignment. All I did was ground down the ridge in the TB and epoxy the non-round part (I did drill two holes for the IAC and the other thing).</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I can only tell you what to do to fix it , you dont have to listen, open throttle further. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
<strong>Well, the car idles fine and the blade doesn't stick when the car is off, whether its warm or cold. It only sticks while the engine is running. It feels like their is a vacuum holding it shut. It requires a little force to 'break' the vacuum, but after that it screams. It makes it a little hard to start slowly from a stop. I have not changed or messed with the idle set screw of the blade alignment. All I did was ground down the ridge in the TB and epoxy the non-round part (I did drill two holes for the IAC and the other thing).</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I can only tell you what to do to fix it , you dont have to listen, open throttle further. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
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From: TEXAS
Re: ported throttle body sticking!!! I'll try to open it a little farther. I didn't want to do this cause I thought it would raise my idle speed also. I will check TPS voltage also. After a day of driving it doesnt really do it too much anymore, but it still does it so I will try all the ideas suggested.
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From: Iowa :-/~
Re: ported throttle body sticking!!! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by felton316:
<strong>I'll try to open it a little farther. I didn't want to do this cause I thought it would raise my idle speed also. I will check TPS voltage also. After a day of driving it doesnt really do it too much anymore, but it still does it so I will try all the ideas suggested.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What did you find out?
<strong>I'll try to open it a little farther. I didn't want to do this cause I thought it would raise my idle speed also. I will check TPS voltage also. After a day of driving it doesnt really do it too much anymore, but it still does it so I will try all the ideas suggested.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">What did you find out?
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From: TEXAS
Re: ported throttle body sticking!!! After two days of driving the car must have learned the addition of the throttle body, because it slowly stopped sticking. Now it does not stick at all. It idles fine, TPS is correct, I did not have to adjust the throttle set screw to raise idle. It only happened when I was going from idle to running in gear. Once the PCM learned how to idle, I have had no problems.
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