The throttle position sensor (TPS) may fail causing intermittent drivability problems like hard starting, stalling, and/or hesitation when accelerating. A failed TPS will require replacement, proper diagnoses should always be performed before replacing any parts.Google+
Car Problem Reports
Jeep Wrangler Throttle Position Sensor May Fail
Jeep Wrangler Problem
Average Mileage: 94,000 mi (44,000 mi - 170,000 mi)
Visitor, 1991 Jeep Wrangler, 140,000 mi
MY PROBLEM IS THAT THE JEEP CRANKS OVER BUT TAkes a long time to start, sometimes i have to press on the gas pedal to get it to start, It is a 91 wrangler with the ho 4 liter haven't found the problem yet anyone have any idea's how to fix this ? my thought was cps ????
Visitor, 2004 Jeep Wrangler
hestitation, idle issues, hard start after immediate shut off
Visitor, 1992 Jeep Wrangler
runs rough if i can get it started, fuel pump is working, there is spark
It was running fine and than started backfiring and was undrivable.Turned off and it wouldn't start. Cleaned fuel rail and injectors. This seemed to fix problem. Went to get seal (front drive-line) now it surges consistently. It idles fine, but surges when gas pedal is held down (higher rpms).
Visitor, 2004 Jeep Wrangler, 61,000 mi
TPS is bad, poor fuel economy, hesitation, cutting out. Just plain running like poop!
Visitor, 1998 Jeep Wrangler, 170,000 mi
I had this checked out by a mechanic and all the codes say that this is the problem. I would like to know how much this will cost?
Visitor, 1999 Jeep Wrangler, 109,000 mi
bucking while accelerating, rough idle
Visitor, 1997 Jeep Wrangler, 138,000 mi
NO EXCELLERATION WHEN DRIVING UP AN INCLINE.
Visitor, 2002 Jeep Wrangler, 132,000 mi
If I tapped on the accelerator and then removed the pressure the engine would die. The problem was intermittent and was solved by replacing the throttled position sensor.