BlueDevil88

While doing research today, I learned that the 91 and 92 cars did not have adjustable throttle position sensors. I have a motor out of a 92 Z28 in my 88. It has an adjustable tps. How much would this effect the engine? I suspect its out to begin with, because it has a dead spot in the throttle. (I've been tinkering with the car for a while now, but I have to get it up to par now cause I wrecked the beater.) If anyone has a clue, it would be very helpful. It would be interesting if this is the root of most of my problems. Minus the obvious lack of a few vacuum hoses. Lol

henryd3

iTrader: (128)

oops

vetteoz

iTrader: (13)

'730 TPI ECM takes the TPS figure it first sees when key turned on and uses that as base figure.( so long as it is within range )
Does not require setting to .54 V as on earlier '165 TPI computers.

Put a DVM on the TPS and measure the resistance .
Should be smooth increase across total opening range

BlueDevil88

I'm not sure which ecm is in the car. I have the one in the car it is running with now, and a extra one in a box of misc. parts I was given when I traded the car. I am guessing there would be numbers on the ecm's that would tell me? And, If I do infact have a dead/dying tps with a '165 ecm, would it matter if I got a non adjustable one or not? I'd rather not have the hassle of having it be adjust able.

vetteoz

iTrader: (13)

'90 -'92 TPI with speed density setup ( no airflow meter on the intake plumbing ) are '730 ECM

BlueDevil88

Well, I have a MAF Set up, so I definitely have the older computer. I'll get the tps voltage checked soon as this snow goes away.