Engine Performance Problems Due to Failed Throttle Position Sensor on Mercury Grand Marquis

The throttle position sensor (TPS) may fail. Common symptoms of a defective TPS can be rough idle, hard starting, hesitation on acceleration, poor fuel economy, and stalling.

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Average mileage: 153,581 (65,000–345,000)
14 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1999, 2000, 2001, 2003, 2005, 2006
43 people reported this problem
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problem details
my 2006 grand marquis mercury stalls. It will stall while sitting still, cruising on the enterstate and everywhere in between.the only thing consistent about the problem is that , I can traveled as much as 350 miles without A problems , then all of A sudden allthe dash lites come on and the car is power less. the dealership has changed A throttle body ($700+) the car stalled going home! Please, I need your inputs .
2006 Mercury Grand Marquis 65,000 mi,
Car will cut off going down the road, and it will start right back up, replaced fuel filter and went almost 800 miles and it did it again. The other day it cut off sitting in traffic, but it always cranks back up??
1995 Mercury Grand Marquis 100,000 mi,
bucks and hesitates around 35 miles per hour
2000 Mercury Grand Marquis 238,220 mi,
ENGINE WILL START ROUGH IDLE NO THROTTLE NOT RESPONDING RICH SMELL OF FUEL BEFORE DIEING TRYED TO RESTART WOULD NOT. NO CODES SHOWED UP TESTED T.P.S USING METER NOT RESPONDING UNLESS YOU TAP THE SENDING UNIT REPLACED EVERYTHING GREAT.
1999 Mercury Grand Marquis 160,000 mi,
going down the road and car just quit running and will not start
stalls, hard to start heistant all the time. when driving to speed up, heistant, got to push gas pedal couple times.
car idles rough and stalls while running wont turn on for awhile then starts few minuts later
1990 Mercury Grand Marquis 68,000 mi,
did a full tune up weeks ago to mee it acts like a plug not firing i was thinking maybe egr or tps might be bad,,rough idle chugs down the road
1993 Mercury Grand Marquis 115,000 mi,
My car shuts off when I press on the brakes and when I try and make a turn, and it idles while in park or pressing on the brakes, some mechanic said it was a tps sensor and another said it was my maf sensor.
1992 Mercury Grand Marquis 83,000 mi,
stalls at 20 miles kicks hard at 30 and then their is no issue. No power while accelerating, once it does start to accelerating it may start to jump even while foot is on brake. Cuts off in traffic all fluids are full.
1999 Mercury Grand Marquis 155,000 mi,
itake maniflod blew i replaced it and new plugs. car ran fine for one day engine light came on and runs very rough. still not fixed
2006 Mercury Grand Marquis 300,000 mi,
Car stalls when driving will restart though
my car has trouble getting into 1st gear
2006 Mercury Grand Marquis 125,000 mi,
Idle problems, stalling, warmup problems, would have replaced idle air control valve if the car had one. Of course, with its fly by wire throttle, it does not. Replaced tps sensor after testing and inspection upon removal. Old sensor was wollered out. Important note- machine screws that attach sensor are lock tighted on and require some heat to remove without snapping off. Heat gun works fine.
2003 Mercury Grand Marquis 145,000 mi,
misses going down the road or sitting know all the time like for a flash