I just got a used Take-Off set of GT500 Wheels and Tires. I tool off my stock 18inch chrome bullit wheels and installed the GT500 ones and inflated the tires to 32psi. I drove the car for a 15 mile drive and then around town a bit. I went to a service station and checked the tire pressure again and it was still 32 all around. I drove home and while on the highway the TIRE MONITOR PRESSURE fault came up on the screen. The little yellow low pressure tire light started to blink too. I got off at the nearest exit and checked the pressure and it was still at 32psi in each. I got home and did some research and noticed that I needed to change the Revs Per Mile to 775. I did that with my SCT and I still have the Message coming up and the light blinking and staying on. Do I need to go to the dealer and have this looked at? Did I do something wrong?? Thanks for any help.

 

Did you calibrate the sensors to the car?

American Muscle sells the calibration tool. The senors have their own serial # that the PCM has to recognize.

FYI I have a set of Take off 17" Bulletts for the winter but only 1 of the rims had a sensor. I got 3 more, calibrated to the car and put in a PCV Pipe Bomb. I get the same error after 18-19 miles of highway driving. The message goes away after the car sits for a while until I drive 18 consecutive miles again.

 

Yeah, sounds like you just need to reprogram the new sensors. The tool is cheaper from ebay as that is where I bought mine... http://cgi.ebay.com/ebaymotors/FORD-...motiveQ5fTools

 

I made the same wheel swap on my Shelby GT. Reprogramming the sensors is easy. Purchased the calibration tool off ebay too.

 

Sounds good guys, as always thank you all so much for your help. Once it stops raining here in Seattle I will take a few pictures and post them on here