[1st07stang]

I just got to think about something. Maybe the problem is with regards to the stock spring not being heavy enough to help close the butterfly's, as well as the drive by wire gear assembly not being strong enough to rotate the throttle closed as quickly as the stocker. I just did a comparison of the two and you can feel the weight differance in rotating the BBK butterfly's open and closed verses the stock t-body. Just a thought, kinda makes sence to me.

[Modern_Muscle]

I have had the same problems, and what I was told by a Ford Tech is that after your intall, the CPU has to re-learn the throttle body, and relearn how this new piece in its system works, Mine has cut down considerably, although it does go back up from time to time, and lightly hangs now and then. I do not have a BBK or a Granni, but has the metal gears instead of plastic. I can tell mid and upper range torque and hp increases, as well as throttle response over the factory. Mostly what you gain here is response and a lil bit of power--CCMV plates are more worth the time and money, waiting to get those with next check!
As to 1st07stangs post, you can open a little window on the spring sensors housing, and using needlenose pliars, put each nose into a groove, and twist 1/2 or 1 round ,to the front of the car, until your peg re-aligns in its groove-this helped mine out considerably, since i have metal gears vs factory.((((DO NOT OVER TURN THE SPRING, 1 turn should be good enough, or you will ruin your spring, )))) Hope that helps

[MaverickMLFD371]

sell it on Ebay, the aftermarket T/Bs on the new mustangs do nothing but cause endless problems!

just giving you a warning (heads up)

[red o6]

if you look at your instructions there should be something in there about checking the ohms the bbk is alot higher ohms then the stock when this is corrected the idle will return to normal.

[1st07stang]

My instructions said nothing about ohms, or resistance or anything like that. As far as the spring the instructions said during the install to rotate the spring 180deg to align the tabs correctly. I tried to rotate it one full turn I can tell the spring is going to start to bind. So I think for now Im not gonna use it, Im gonna call BBK right now and talk to them. Thanks guys

[1st07stang]

OK here is the latest update. I talked to BBk they sent me via email a instruction sheet on how to match the TPS voltage of the stock unit to the BBK unit fallowed it to a "T" and low and behold it runs like a champ!Standing idle is where it should be a and the rpm's dont hang near as bad as before. Maybe a little more than the stock unit did but thats about it. So Ill drive it for a while and try to make mental notes as to how its performing, to let you guys know. Next week I have to drive from here to Hunsville AL for a job interview so I guess then will be a good distance to gauge its performance. ( yes Ill be bringing tools and stock unit just incase)
Thanks again guys for all your help.

[Norse1974]

Good Luck Bro!I doubt there will be a good aftermarket T/B on the market for a while!Maybe another year and we might see a break through on T/Bs..

[1st07stang]

Originally Posted by Norse1974 Good Luck Bro!I doubt there will be a good aftermarket T/B on the market for a while!Maybe another year and we might see a break through on T/Bs..

Well so far this one is doing just fine, NO problems at all since getting it set right. BBK helped and it worked. So if all continues as it is to me this will be a very good T-Body.

[stanglifemike]

I've heard nothing but problems from the new tb's. But on the MM&FF dvd that came with the mag a few months back, they put one on their project car and picked up a few hp with no problems. Very detailed install they show too.

[1st07stang]

I still have the stock unit, sojust incase the BBK takes a dump I can swap it out. But so far I do notice a big increase in throttle responce and the car pulls a hell of a lot harder and faster. I think the combination of the t-body and pulley combo has made a noticable differance. I LIKE IT!!!!!

[ChrisJ]

Originally Posted by 1st07stang OK here is the latest update. I talked to BBk they sent me via email a instruction sheet on how to match the TPS voltage of the stock unit to the BBK unit fallowed it to a "T" and low and behold it runs like a champ!Standing idle is where it should be a and the rpm's dont hang near as bad as before. Maybe a little more than the stock unit did but thats about it. So Ill drive it for a while and try to make mental notes as to how its performing, to let you guys know. Next week I have to drive from here to Hunsville AL for a job interview so I guess then will be a good distance to gauge its performance. ( yes Ill be bringing tools and stock unit just incase) Thanks again guys for all your help.

What were the instructions?

[1st07stang]

They tell you how to adjust the idle set screw and messure the TPS voltage. And how to set the voltage for the TPS with the BBK on the car.It worked and it still running great.

[1st07stang]

Originally Posted by ChrisJ Originally Posted by 1st07stang OK here is the latest update. I talked to BBk they sent me via email a instruction sheet on how to match the TPS voltage of the stock unit to the BBK unit fallowed it to a "T" and low and behold it runs like a champ!Standing idle is where it should be a and the rpm's dont hang near as bad as before. Maybe a little more than the stock unit did but thats about it. So Ill drive it for a while and try to make mental notes as to how its performing, to let you guys know. Next week I have to drive from here to Hunsville AL for a job interview so I guess then will be a good distance to gauge its performance. ( yes Ill be bringing tools and stock unit just incase) Thanks again guys for all your help. What were the instructions?

If you need them I can copy and paste them on here.

[ChrisJ]

I was just thinking it would be good for future reference...At first this morning I thought I was having the same issue but mine was a IAC going out and the gasket not fitting correctly...I fixed it after work and all is good now...I also had to adjust the TPS...

It would be great if you could post them that way if someone else has the same issue they can search and find this thread and get all the info...

[1st07stang]

OK will do. Here they are for all to referance.


BBK 1763 2005+ Mustang GT Throttle Body Troubleshooting Guide

If you are having issues with your BBK 1763 '05+ throttle body causing a FAILSAFE mode or CHECK ENGINE light, try the following procedure-

First be sure that the plastic capped spring is hooked into the gear and rotated approx 180° COUNTER-CLOCKWISE until it pops into locked position.

If that is verified and correct and you are still having issues then follow the directions for checking TPS voltage.


CHECKING TPS VOLTAGE
To check the TPS voltage you must have a DIGITAL voltmeter.

1. Re-assemble and install the stock throttle body.

2. LEAVE THE THROTTLE BODY MOTOR UNPLUGGED (the small connector on the driver side of the throttle body).

3. Ground the black wire of your meter and poke the probe of the red wire on the meter into the YELLOW wire of the TPS sensor which is the bottom wire on the plug located on the passenger side of the throttle body. You DO NOT need to break the wire to read voltage. The best way to probe the yellow wire is to poke the probe into the plastic harness plug (while it’s plugged in to the TPS). You will need to penetrate the blue insulator the goes around the end of the yellow wire (hidden inside the harness plug) to reach the bare metal end of the yellow wire. Touch the probe to the bare metal end of the yellow wire

4. Turn the ignition to the ON position but do not start the car.

5. Read the meter display. You should see a voltage reading between 1.19-1.31 volts. Write the voltage down.

6. Now re-install the BBK throttle body and repeat steps 2-5.

7. If the TPS voltage on the BBK throttle body varies from the stock TPS voltage then follow the next steps to adjust the BBK to stock settings. This is easily done with the throttle body bolted to the car.

ADJUSTING TPS VOLTAGE
1. Remove the motor housing from the throttle body and loosen the tiny Allen headed set screw that locks the brass plunger into place.

2. Hook the plastic capped spring back into the gear and mount the motor housing cover onto the throttle body with a few of the screws to hold it in place.

3. Rotate the plastic capped spring approx 180° COUNTER-CLOCKWISE until it pops into locked position.

4. Using a pair of pliers or Vise Grips while watching the meter, turn the brass plunger clockwise to increase voltage or counter clockwise to decrease voltage until the meter displays the same voltage reading you noted from the stock throttle body.

5. Once the correct voltage is achieved and verified, you may remove the motor housing cover and tighten the set screw back into place then re-assemble the BBK throttle body for driving operation.

6. Plug the throttle body motor in.

7. Turn the ignition key to the ON position, then to the OFF position 4 times to allow the car to check the throttle body for proper operation.
If the throttle body is correct then the CHECK ENGINE and FAILSAFE warnings should be gone when you turn the key on for the 4th time







If for some reason this does not work for you please e mail BBK Tech Support for further assistance tech@bbkperformance.com