1997 Jeep Cherokee throttle position sensor

1997 JEEP CHEROKEE
117,000 MILES • 6 CYL • 2WD • AUTOMATIC
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BOBNULL
  • MEMBER
  • 1 POST
Grand Cherokee Limited

computer codes were 122 and 121 I replaced the sensor but check engine is still on and the jeep won't shift into overdrive. where else to look
May 24, 2008 at 3:56 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Throttle positon sensor signal is also use as an indication of the transmission throttle pressure to the computer-

Some vehicles the coolant temperature sensor is use as input signal to the computer to command overdrive-in a given temperature-

Did you check the circuit back to the computer for an open or short to ground.
May 24, 2008 at 4:18 AM
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