I have a 1994 buick lesabre 3800 and it shifts weird, if will shift through all the gears before i hit 50mph and if i mash the pedal to the floor it wont do anything s to it just slowly gets to speed. i replaced the TPS but the tps pigtail (wires that go to it) one of the plasice peices around the prong are broke

SOURCE: tps sensor

There are 2 screws that hold the TPS on to the side of the throttle body. Before you take the old TPS off, note where the TPS is located regarding the adjustment slots. Remove the 2 screws, and remove the old TPS, install the new one, and try to achieve the SAME adjustment. If you get the adjustment wrong, the engine will idle up & down. If it does, move the new TPS slightly until the idle smooths out.

SOURCE: nasty tps p1120 problem

hi what are the exact symtoms is it doing this when idling as well or is it when you pressing the the accelarator or at certain speeds does it do hot or cold or both when did it start etc yates210456

SOURCE: TPS

turn on car and use voltmeter on the sensor get the base reading then get a reading with the throttle partly opened and see if it increases or what. it could be faulty, if it is not within spec then get a new one, unplug the batter negative terminal and install new sensor. reconnect everything and you shuold be on your way!

SOURCE: low voltage tps senser.

Not likely getting a bad TPS.Your TPS runs off a 5volt reference wire.Using multimeter with key on engine off Check to make sure you have your 5volt reference check for any deformed terminals or broken wires inside insulation.

Marvin

• 85242 Answers
• Posted on Aug 28, 2009

SOURCE: Replaced IAC valve on a 1999 buick lesabre, car is

a defective TPS will affect shifting replace that 1st