Throttle Position Sensor

[Oilking53]

So here's the deal I have a 1985 s10 Tahoe truck and just ordered a new re-built carburetor for it and the new one did not come with a Throttle Position Sensor on it and my old one does have one. My question is do I need one on there to make it run right or does it not matter and if so how do I put one on. Thank you!

 

[Jims86]

So here's the deal I have a 1985 s10 Tahoe truck and just ordered a new re-built carburetor for it and the new one did not come with a Throttle Position Sensor on it and my old one does have one. My question is do I need one on there to make it run right or does it not matter and if so how do I put one on. Thank you!

Yes....wont pass ca emissions testing either. TPS is for the ecm to control mixture up to part throttle, and timing through the whole operational range.

 

[T-ROD]

Jim is correct on that, Im about 100% sure that it wouldnt pass an emissions test, although if thats not a concern, Ive actualy tinkered with q-jets, Im not sure about yours, but if its anything like the full-size setup, not all of them had computerized carbs, and the ones that didnt within that year still had transmission and distributor timing modules/computers, therefore if theres not an issue with emissions, you might be able to convert it without alot of brain work involved, but id have to see it, I cant quite recall what different setups they used on that year, and theres not realy a way to install a TPS sensor on most aftermarket carbs unless it was made for original setup with that setup, I might be able to help if you need it, just throw some pics of the distributor & carb wiring.