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This is how I determined this. If you start your car and speed up really fast on the road or highway, and you sense some or a alot of hesitation in the throttle, then you need a new sensor.
-James
It should also set a code and illuminate the check engine light.
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∙ 13y ago
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What happens when the throttle position sensor is bad?
When Throttle Position sensor is bad when you step on pedal and it does not move, engine light is on!
How do you know when the throttle position sensor is bad?
You would have a "check engine" light illuminated and the code(s) set would indicate a bad TPS.
What are the symptoms of a bad throttle position sensor in a 91 Saturn sl1?
A bad throttle position sensor, on your 1991 Saturn, will cause the engine to run rough when it is idling. The engine will run normally at higher speeds.
What causes a 1999 Cougar engine stall when coasting?
The TPS (throttle position sensor) has gone bad on your throttle body.
What are symptoms of a bad throttle position sensor?
A bad throttle sensor can cause several problems. Symptoms include rough idle, loss of power, and even power surges while driving. .
What might cause a 2001 Chevy Impala to idle up and down?
A bad idle air control sensor or a bad throttle position sensor.
What can cause hard down shifting in dodge 2003 caravan?
Bad Throttle Position Sensor
What does a P0123 diagnostic code mean for a 2003 Jeep Wrangler?
Bad throttle position sensor
What is the Reaction if throttle body sensor is bad?
Assuming you mean the throttle position sensor. The throttle position sensors tells the engine computer when the throttle position has changed, it adjusts fuel flow to match the throttle opening. If the throttle position sensor fails then the engine computer has to depend only on the MAP sensor to define air flow thus how to adjust the fuel flow. I would expect then that response time would be slower than when the throttle position sensor works correctly. On a Chevy Celebrity it might also turn on the check engine light and post either a code 21 or a code 22.
What does code p1221 mean?
The OBD code p1221 indicates a bad throttle position sensor. Sometimes cleaning the throttle body will clear this code. If that does not work the sensor will need to be replaced.
Why does my Grand Am shut off when stopping?
It could be that your car is idling to low, the throttle position sensor can be bad
What does a throttle position sensor do?
The throttle position sensor (TPS) keeps the PCM informed about throttle position. The PCM uses this input to change spark timing and the fuel mixture as engine load changes. A problem here can cause a flat spot during acceleration (like a bad accelerator pump in a carburetor) as well as other drivability complaints.the throttle position sensor (tps) tells the computer where you have your foot while driving ( half throttle or quarter ect.)
