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: 99,212 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, 61,000 mi
TPS is bad, poor fuel economy, hesitation, cutting out. Just plain running like poop!
Visitor, 1999 Jeep Wrangler, 109,000 mi
bucking while accelerating, rough idle
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, 1992 Jeep Wrangler
runs rough if i can get it started, fuel pump is working, there is spark
Visitor, 2004 Jeep Wrangler
hestitation, idle issues, hard start after immediate shut off
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, 1997 Jeep Wrangler, 138,000 mi
NO EXCELLERATION WHEN DRIVING UP AN INCLINE.
Visitor, 2003 Jeep Wrangler, 90,584 mi
Still having this problem.... My jeep Rubicon 4.0 will have the idle rev up to 3000 rpm then back down to 900 rpm then back up then down several times and my foot is not on the throttle... It will start to do this when in gear running down the street and it is noticeable to the peddle. When you take your foot off the peddle the idle accelerates to 3000 rpm and you can't shift.... I replaced the throttle positioning censor twice already, and it still does it. I asked Jeep to flash the computer, which was replaced, and programmed in 2010 by Jeep.. but they tell me it can not be flashed... They say they can diagnose the computer for problems but it's $50.00 and i know it will not show up in the code as I have already done this in the past..... It seems to do this when the blower motor for the heater/defroster is on..... But it will also do it in the summer when air conditioner is on... Is it possible the problem is in the blower block resistor ? Hunted Jeep 2003 Rubicon