idle problem

Dknits782 · September 19th, 2011, 11:22 PM

hey so i got a good deal on a bbk 70mm throttle body and installed it today but i have a problem with the idle. first i went to set a base idle at 800rpm but when i went to adjust the tps i could not get it below 1.4v i took both screws and i rotated it till it got down to .95 but the screw holes where way off. Also one of the screw holes is striped so it does not tighten down. I had to get home ( i was doing it at my parents more room to work) so i decided to drive it the idle was fine till it got warmed up then it would not idle below 2000rpm. when i got home i adjusted the idle screw and the idle dropped but the throttle is closed, only runs with the iac plugged in. Any ideas what could cause this does the tps influence the idle that much? Srry new to mustangs and this is my dd i cant take to many days off school.

jonrhy05 · September 19th, 2011, 11:26 PM

yah, your TPS does influence it that much. you really dont need to take the screw all the way out. the holes should be oval to allow you to rotate the TPS once the screwms are barely loosened. for a quick fix...use a bigger screw(s) to hold the TPS

ryanw · September 19th, 2011, 11:28 PM

you need to E-long gate the holes with a drill bit in the TPS sensor. that should get you where you want to be

Dknits782 · September 19th, 2011, 11:32 PM

ok i will try that first. do u mean e long gate the depth of the holes or make the holes on the tps more oval? I really dont want to mess the hole up i have never done this before. thanks for the fast replies also

ryanw · September 19th, 2011, 11:38 PM

im not talking about the holes on the T-body. What im saying is to make the holes on the plastic TPS sensor slotted so that you can spin it more... In other words make the holes ovel

Dknits782 · September 19th, 2011, 11:39 PM

ok sweet thank u i will let u know how if it works

Dknits782 · September 20th, 2011, 05:54 PM

I made the holes longer and it worked idle back down ( just have to figure out my idle hang) thanks u guys for the fast accurate replies. Love this site defiantly the best.

September 19th, 2011, 11:22 PM	#1
Dknits782 Newbie Join Date: Aug 2011 Posts: 37 iTrader: 0 reviews	idle problem hey so i got a good deal on a bbk 70mm throttle body and installed it today but i have a problem with the idle. first i went to set a base idle at 800rpm but when i went to adjust the tps i could not get it below 1.4v i took both screws and i rotated it till it got down to .95 but the screw holes where way off. Also one of the screw holes is striped so it does not tighten down. I had to get home ( i was doing it at my parents more room to work) so i decided to drive it the idle was fine till it got warmed up then it would not idle below 2000rpm. when i got home i adjusted the idle screw and the idle dropped but the throttle is closed, only runs with the iac plugged in. Any ideas what could cause this does the tps influence the idle that much? Srry new to mustangs and this is my dd i cant take to many days off school.

September 19th, 2011, 11:28 PM	#3
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	you need to E-long gate the holes with a drill bit in the TPS sensor. that should get you where you want to be __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

September 19th, 2011, 11:38 PM	#5
ryanw I Post Entirely Way Too Much 1991 Ford Mustang GT Join Date: May 2007 Location: San Diego, California Posts: 6,063 iTrader: 0 reviews	im not talking about the holes on the T-body. What im saying is to make the holes on the plastic TPS sensor slotted so that you can spin it more... In other words make the holes ovel __________________ DART 331ci stroker, AFR 185 heads, Trick Flow R intake, Accufab 70mm tb, 75mm pro m Maf, 30lb injectors, jba headers, 2 1/2" x pipe flowmaster super 10 mufflers, 255 fuel pump, 3:27 gears

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September 19th, 2011, 11:26 PM	#2
jonrhy05 Regular Join Date: Feb 2010 Posts: 87 iTrader: 0 reviews	yah, your TPS does influence it that much. you really dont need to take the screw all the way out. the holes should be oval to allow you to rotate the TPS once the screwms are barely loosened. for a quick fix...use a bigger screw(s) to hold the TPS

September 19th, 2011, 11:32 PM	#4
Dknits782 Newbie Join Date: Aug 2011 Posts: 37 iTrader: 0 reviews	ok i will try that first. do u mean e long gate the depth of the holes or make the holes on the tps more oval? I really dont want to mess the hole up i have never done this before. thanks for the fast replies also

September 19th, 2011, 11:39 PM	#6
Dknits782 Newbie Join Date: Aug 2011 Posts: 37 iTrader: 0 reviews	ok sweet thank u i will let u know how if it works

September 20th, 2011, 05:54 PM	#7
Dknits782 Newbie Join Date: Aug 2011 Posts: 37 iTrader: 0 reviews	I made the holes longer and it worked idle back down ( just have to figure out my idle hang) thanks u guys for the fast accurate replies. Love this site defiantly the best.

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