Does anybody know if the TPS sensor is adjustable on a 2004 Wrangler with a 4.0 engine?

try this site
Throttle Position Sensor Information - Description, Operation And Location

Switch Types
There are a few different TPS design types: switch, potentiometer and combination. The switch type, not surprisingly referred to as the throttle position switch, cycles on and off through its range. It is usually "on" (has electrical continuity) at throttle close, or idle. Just above idle it is "off" (loses continuity), and stays that way until wide open throttle is reached, where it is then "on" again. While operating in the middle area, where the switch is off, other sensor inputs provide the computer with the data it needs to maintain smooth throttle response and good driveability. This type of sensor is usually adjustable.


The potentiometer type of TPS is a variable resistor, effectively supplying a gradually increasing supply of voltage to the computer as the throttle is gradually opened. Usually the voltage operating range is from about one-half a volt at idle, to five volts at wide-open throttle. These sensors are usually not adjustable.

The TJ's TPS is not adjustable. The engine computer self-calibrates on its own with the TPS so the TPS does not need to be adjustable like they used to be.

^Trust Him^ He knows what he's talking about.

Thanks to all who responded. I will replace the sensor.. thanks again !

My .02, buy an OEM one.

X2, too many problems with aftermarket sensors for me to trust them any more.

I have had to replace the TPS Sensor in my 1999 Wrangler three times in less than twelve months. Can anyone suggest a reason why this has happened?