lowbird

is it just me or does everybodys tpi sound like it has a vacuum leak ? I have a high idle and I was checking but it is constant . I don't have a leak I was just curious .

red rock

iTrader: (2)

What is a high idle? what RPM, any codes? check for a vacuum leak around the throttle butterfly shaft. How do you know you have no leaks? What all have you checked? Sorry for all the questions, but the more info the more we can help.

lowbird

It's 1800 .I checked with brake cleaner found no leaks .no codes but I loosened the tps and moved it and it droped .the throttle body is new its something to do with that tps .when the car is running I sware I here a leak so is was wondering it that's how you's just sound?.its sounds like air moving through the runners? I switch this car from 305 tbi to 350 tpi and I have had a ton of problems.

red rock

iTrader: (2)

First the TPS should be between .54 and .75 volts, https://www.thirdgen.org/tpimod2 ,also adjust the IAC as described in link. I like .65 volts. As for air leaks, you can by an automotive stethascope for cheap or use a peice of small hose to your ear and move around at different gaskets. Are all vacuum lines attached and not broke? Where do you think you hear the leak from?

lowbird

Im going to pull the intake because of an oil leak at the back anyway. Hope i'll find it then.