I just replaced my TPS sensor and after about a week i realized that every now and then when i come to a stop it will idle real crappy and if i jump on the throttle the car seems to think twice about it lol. i hate this hesitation. at first i thought it was my newly installed t-5 convert. i thought that the trans was binding up or something when i was trying to give it full throttle. anyway. i realize that i really didnt adjust the TPS sensor when i installed it, and i was wondering what was the best way to do this? i know it can move a bit back and forth (unlike what i thought was my factory one which was stuck in one position once bolted in). any thoughts on this would be awesome!

 

Not sure, but OEM TPS for a 91' may not be adjustable. There's a tech article here on how to set the adjustables.
Did you convert to a chip for a manual? ECM programming to handle an auto doesn't work well with a manual.

On non-adjustable TPS the ECM reads the TPS voltage and compares it with the last start cycle reading and uses the lower of the two for idle.

 

i didnt change my ecm at all for the convert. i really wasnt aware that i was supposed to. i asked a few ppl, one being HAWKs and they said that i didnt have to lol.

 

Not the ECM, but just the chip.

 

ahh... thanks man. do you know where i can get this chip?

 

I don't know what year your engine is. Is your TPS adjustable or NON adjustable?

Jake

 

An there in lies the rub, no such model was ever produced (350 TPI manual.)
Look inside the console glove box there should be a sticker with your cars RPO codes. You'll need the ones that identify the rearend type and gear ratio. You'll need that if no one on any of the thirdgen forums can give the broadcast/prom code, the prom is the chip. A dealership can sell (about $100-$150) you a new chip programmed with that code, or you can search salvage yards for it. You may find it on Ebay for that matter. Once you have it you'll need to reprogram it to change the engine size, fuel injector size, among other things such as enable/disable VATS...etc. The other option is if it's a popular chip you can get the electronic binary file for that prom code from several websites and reprogram your chip with it. TPIS should be able to give you the proper timing, idle rpm, operating temperature...etc.

It's time for you to go over to the DIY Prom forum.