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.
Drivability Issues Due to Faulty Throttle Position Sensor on Jeep Wrangler
Average mileage: 99,778 (22,235–170,000)
63 people reported this problem
26 people shared problem details
1991 Jeep Wrangler140,000Visitor
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 ????
2004 Jeep Wrangler61,000Visitor
TPS is bad, poor fuel economy, hesitation, cutting out. Just plain running like poop!
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).
1999 Jeep Wrangler109,000Visitor
bucking while accelerating, rough idle
1998 Jeep Wrangler170,000Visitor
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?
1992 Jeep WranglerVisitor
runs rough if i can get it started, fuel pump is working, there is spark
2003 Jeep Wrangler90,584Visitor
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
2004 Jeep WranglerVisitor
hestitation, idle issues, hard start after immediate shut off Rubicon
1995 Jeep Wrangler123,000Visitor
Hesitation while driving, especially 1st into 2nd gear. Died out. Trouble starting
1997 Jeep Wrangler138,000Visitor
2005 Jeep Wrangler63,000Visitor
"False stalls", jolting/lurching several feet during take off
1999 Jeep WranglerVisitor
Hesitant to start. Rough/ low idle rpm. Bucking under acceleration. Problem didn't start until it started raining outside.
2007 Jeep Wrangler69,000Visitor
Hesitating during acceleration. This is a manual transmission. I'm going to try replacing the TPS.
1998 Jeep Wrangler116,000Visitor
When you start it up it revs to 2500 rpms and starts to go higher ,it won't idle down.
1997 Jeep Wrangler155,000Visitor
Heavy bucking upon modest to hard acceleration from a stop, on level ground or heading uphill. Occasionally in second gear accelerating.
2004 Jeep Wrangler123,000Visitor
Vehicle continues to accelerate for a few seconds after letting off gas pedal. Checked the connection at the throttle and the cable/throttle body is not sticking. If you push in the clutch and hold it for a second while shifting the vehicles rpms increase with out hitting the accelerator.
1995 Jeep Wrangler130,000Visitor
Hard to start
2002 Jeep Wrangler50,000Visitor
No power... Jeep seems to want to stall after put into drive. Feel like I need to step on gas to rev the engine to get it normal. Only happens once in a while.
1995 Jeep Wrangler128,000Visitor
had to replace throttle sensor
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