1996 Pontiac Bonneville throttle sticks

1996 PONTIAC BONNEVILLE
109,000 MILES • 6 CYL • FWD • AUTOMATIC
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KEN4832
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My throttle sticks as soon as the car warms up. I used WD40 on the linkage, carb cleaner all around inside and out. It frees up and runs fine for awhile, then freezes up again at high rpms (3000). It becomes very tight to manipulate by hand at all possitions. Driving me nuts! Can't drive it.
Apr 26, 2010 at 12:59 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
If you disconnect the throttle cable, is the cable sticking or the throttle plate?
Apr 26, 2010 at 11:19 PM
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KEN4832
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[quote:ffd2152dd7="Jacobandnickolas"]If you disconnect the throttle cable, is the cable sticking or the throttle plate?[/quote:ffd2152dd7]

Cables are free. Plate is free now. I disconnected the TPS,(actually took it off), cleaned it out and now it may not be installed properly. Is there a trick? Code os PO122
Apr 27, 2010 at 1:29 PM
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JACOBANDNICKOLAS
  • ✓ASE Certified Mechanic
  • 110,194 POSTS
  • ASE Certified Mechanic
No trick. THe PO122 indicates Throttle Position Sensor/Switch A Circuit Low Input. Either the TPS is bad, or there is an electrical problem to it. Check to make sure the connections are clean and corrosion free.

Let me know what you find.
Joe
Apr 27, 2010 at 1:32 PM
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