CEL effecting performance ?

[z24frank]

Ok I did a search but only came up with 2g answers, Heres my problem-I have a CEL on and I did the radio shack scan on it and its the TPS.With my CEL on is it effecting performance because my car is really running alot slower right now and Ive heard that the car will go into limp or safe mode on some CELs is this true?By the way I have a 1990 fwd laser.

 

[khartley]

Well if your TPS sensor is bad, why not search the symptoms of a bad TPS and see if it matches the problems you are having.

 

[BoostedBeaver]

Well im sure it is impeding on your performace in one way or another and I think you should listen to the guy above me. Find the symptoms of a bad TPS and troubleshoot if you find that is your problem then you will know what parts to replace. Once again this will need to be fixed to regain the lost power.

 

[z24frank]

Yeah I have another sensor to put in but was just more curious to see if this was one of those things that does trigger the ecu to go into safe or limp mode.I am absolutely going to replace it this weekend though.

 

[blakktalon]

Whether it is in limp mode or not it sure sounds like timing is being pulled, hence the car losing power, definitely switch that sensor out.

 

[z24frank]

ok that makes sense then. I did replace the sensor and its back to normal but I was curious. Thanks for the help all.

 

[dsmmikej]

make sure to set your tps right so you have 0-100% on your throttle. you will need a multimeter for that. This is a big factor, dont just slap one on without adjusting it back to where it need to be!

 

[zdravko_k2002]

Yea I would def have to agree with the post above

 

[z24frank]

OOPS that is all I did ! How do I adjust it?

 

[rarest_90_DsM]

(1) Slacken the accelerator cable enough.
6FU13%
(2) Connect a digital voltmeter between terminal 19 (throttle
position sensor output voltage) of the engine control unit
and terminal 24 (ground).
(3) Set the ignition switch at ON (do not start the engine) and
check that the output voltage from the throttle position
sensor is as specified.
Standard value: 0.48-0.52 V
(4) If it is out of specification adjust by loosening the throttle
position sensor mounting screws and rotating the throttle
position sensor. After adjustment, tighten the screws
firmly.
NOTE
1. Clockwise rotation of the throttle position sensor
increases the output voltage.
2. For information concerning the removal and installation
of the throttle body, refer to P.14-89.
(5) Set the ignition switch at OFF.
(6) Adjust the free play of the accelerator cable.
(7) Remove the voltmeter.
(8) Disconnect the negative battery cable, and reconnect it
more than 10 seconds later. (By doing so, the memory
storing the diagnosis data during the idle speed control
adjustment is cleared.)

STRAIGHT FROM SERVICE MANNUAL