Question about 1997 Pontiac Grand Prix

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Where is the throttle/pedal position senser on 1997 pont grand prix i have a code po121 on

I have a code po121 on where is this located

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It is on the thottle bodywhere is the throttle/pedal position senser on 199 - 1_24_2013_12_05_21_am.jpg

Posted on Jan 24, 2013

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Posted on Jan 02, 2017

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SOURCE: I have a Pontiac Grand Prix GT, 3.8 Liter Motor.

Change the throttle sensor first, and see if the map sensor is a victum. throttle sensor is similar to an old volume reostat, on some cars and everything else tries to do react, and everything errors out.... My bet is throttle position sensor... But you never know, it CAN be both, just usually not both.

Posted on Feb 18, 2011

Testimonial: "Thank you very much for the answer. We'll try the Throttle Position sensor first. That does make sense as to what is happening."

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SOURCE: Getting the following codes from a 1997 Pontiac Grand Am....... PO121 TPS / Pedal Position Sensor A CKT Range / Perf Also, PO341 Camshaft Position Sensor A - Bank 1 CKT Range/Perf. Any thoughts on the

po121 means that there is a problem with the throttle position sensor ( tps). or in the wiring or connector, most likely its the tps that is bad. first remove connection from tps, heres how to test. use an ohms meter and hook a lead to top or bottom terminal of tps. use other probe on center terminal of tps. move throttle plate slowly, if the needle on meter does not move at a smooth pace, then tps is bad. good-luck!!

Posted on Oct 07, 2010

  • 21 Answers

SOURCE: Replacing 90 pipe assembly part on 1997 Grand Prix GT

If its the same as my GTP, its just under the Supercharger right in the middle of the intake.
Just pull it out, its only held in with a O-ring. When you replace it, make sure you lube the gasket with grease so its easier to put back in, and less likely to nick the O-ring.

Posted on Apr 20, 2009

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1 Answer

Cause for po121


code p0121 refers to throttle position (TP)switch A/ pedal position (AAP) switch A-range/performance problem===causes --accelerator cable adjustment--TP/APP switch
PO121 also refers to TP sensor A/ accelerator pedal position AAP switch A -range / performance problem===causes --accelerator cable adjustment. TP/AAP sensor --wiring
Cheapest first is to check the cable adjustment then the cheapest part after that .

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I have a 2006 Grand Prix that the reduced engine power light came on in. Its been diagnosed as the accelerator pedal to be replaced. We've replaced it and still has the problem. Any ideas?


the throttle position sensor code, if it has been replaced the codes should have been erased at the time it was done, also make sure it is adjusted correctly.

Oct 06, 2012 | 2006 Pontiac Grand Prix

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Drl location 2006 grand prix


Pont Grand Prix; has 16 pin DRL module, fuse removes DRLs and Auto-ON (there is also a fuse for air bags, SRS)
believe most recent GM models (99+), use a VCR tape sized DRL module that will be under the dash, behind radio, glove box, over pedals, etc are typical locations for your car in various years.. There are two 8 pin connectors to it

Sep 10, 2012 | 2006 Pontiac Grand Prix

1 Answer

I have a Pontiac Grand Prix GT, 3.8 Liter Motor. Two codes PO108 Map/Baro CKT High Input, and PO121 Throttle/Pedal Position sens A ckt Rng/Perform, according to the scanner. Did I need a Map Sensor and...


Change the throttle sensor first, and see if the map sensor is a victum. throttle sensor is similar to an old volume reostat, on some cars and everything else tries to do react, and everything errors out.... My bet is throttle position sensor... But you never know, it CAN be both, just usually not both.

Feb 18, 2011 | 1997 Pontiac Grand Prix

1 Answer

03 pont. G. prix gt. when i pushed the gas pedal down the car does not accelerate the way it should . i recently replaced the fuel injector pressure reg.


could be your coil,or o2 sensor, catalytic convertor clogged with out code its really hard to tell these are just some suggestions

Feb 07, 2010 | 2003 Pontiac Grand Prix

1 Answer

Getting the following codes from a 1997 Pontiac Grand Am....... PO121 TPS / Pedal Position Sensor A CKT Range / Perf Also, PO341 Camshaft Position Sensor A - Bank 1 CKT Range/Perf. Any thoughts on the


po121 means that there is a problem with the throttle position sensor ( tps). or in the wiring or connector, most likely its the tps that is bad. first remove connection from tps, heres how to test. use an ohms meter and hook a lead to top or bottom terminal of tps. use other probe on center terminal of tps. move throttle plate slowly, if the needle on meter does not move at a smooth pace, then tps is bad. good-luck!!

Apr 27, 2009 | 1997 Pontiac Grand Am

2 Answers

1997 pontiac grand prix with major issues


check all fuses for turn signal and brake lights.change fuel filter . first. do a little tune up change spark plugs and wires . if changing fuel filter dont help. have fuel pressure check first before buying a new fuel pump .they run after taxes 400.00 dollars. your fuel pressure should be 41 to 47 psi. replace fuel pump relay also.

Mar 16, 2009 | 1997 Pontiac Grand Prix

1 Answer

Replacing 90 pipe assembly part on 1997 Grand Prix GT


If its the same as my GTP, its just under the Supercharger right in the middle of the intake.
Just pull it out, its only held in with a O-ring. When you replace it, make sure you lube the gasket with grease so its easier to put back in, and less likely to nick the O-ring.

Mar 08, 2009 | 1997 Pontiac Grand Prix

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