Any tips for swapping TPS from one TB to another?

[nickthegenius]

I have a C&L upper and Accufab 75mm TB sitting on the workbench waiting to go on the car. The only thing keeping me from just going out and installing it to battle todays case of boredom is that people have posted problems with swapping TB's and ending up with a funky idle speed.

Most of them usually say something like "I installed my BrandX TB today and that gosh dern thing is idling at 1200RPM. I tried adjusting the screws and they didn't help so I just took it off and put my stock TB on and its fine."

Then the replies usually say something like "Sounds like you didn't install the TPS correctly when you installed it on your BrandX TB". Nobody ever gives details on what the installer did wrong or tips on how not to screw it up.

So does anyone have any tips on how to make this swap as painless possible? I don't want to have to post about how my TB screwed up my idle.

 

[JonJon]

Ford Racing TB comes with a new TPS so you don't need to move it.
Only 70mm though I think.

 

[road rage]

I just installed a mac 70mm tb on my 00 GT and couldnt get the tps off so I went down to my ford dealer and bought a brand new ne for $44. It will save yourself alot of trouble since the tps from the factory has lock thread on it.

 

[GT2000JAY]

All you can do is give it a try. The function of the TPS is to send a voltage reading based on the position of the throttle to the ECM to control the IAC, etc. Just make sure that either you have a multimeter to reposition the sensor when you install it - or just try not to move it from the position it's in when it comes off. Be careful sliding it back on the new TB.

As far as getting the TPS off, some come off easier than others. All you can do is give it a shot. If it doesn't want to break free, I've read everything from cutting a slot into it with a dremel to using penetrating oil. Or, as was said earlier purchase a new TPS.

Overall, it's a pretty simple swap. Also, there was a thread a little while ago (maybe a month) that had the voltage settings for the TPS if you're curious.

Hope it helps a little.

Jay

 

[nickthegenius]

Well, I just installed it. I got really bored and had to find something to do. So I installed it. I started it up and it runs fine and I used the instrument cluster diagnostic thingy and used the "tac" feature. It shows it idleing around 820-835RPM. Does that sound right?

Also, I haven't been able to drive it yet because its wet and nasty outside and the car is all cleaned up for storage. The only thing I noticed is that the dreaded "hanging" when letting off is worse than with the stock parts. It hangs at about 1050RPM and then waits probably 2 seconds and drops to the 820-830 RPM. What can I do about that?

Thanks