well if no check light comes on, it shouldnt be any of the engine sensors then. (at least thats how it works?)

it might be clogged injectors, i always use fuel injector cleaner since new every other fill up.....0.99 cents at local 99cent stores!!!!

let us know whats up

 

Yes, you can check the TPS, basically all it is is a potentiometer. You can check it as follows:

1. Follow the wiring harness from the TPS to the back of the intake manifold and remove it from the firewall. This will give you more rrom to probe the electrical terminals. Check the electrical connector at the sensore for a sung fit. Check the terminals in the connector and the wires leading to it for looseness and breaks. Repair as required.

2. Using a voltmeter, check the reference voltage from the ECM/PCM. Chonnect the positive probe to the yellow/blue wire and the negative probe to ground. It should read approximately 5.0 volts.

3. Next, check the TPS signal voltage with the engine OFF, throttle fully closed and TPS electrical connector connected, connect the probes of the voltmeter to the red/black wire(positive probe) and ground(negative probe) (Note: use a straight pin to backprobe the connector terminal) Gradually open the throttle valve and observe the TPS voltage. With the throttle valve fully closed, the voltage should read approximately 0.5 volts. Slowly move the throttle valve and see if the voltage changes as the sensor travels from idle to full throttle. The voltage should increase smoothly to approximately 4.5 volts. If the readings are incorrect, replace the TPS.

4. A problem in any of the TPS circuits will set a code. Once a trouble code is set, the ECM/PCM will use an artificial default value for TPS and some vehicle performance will return.


REPLACEMENT OF TPS:

5. The TPS is an integral part of the throttle body and must be replaced with the throttle body as a unit.


This came out of my Haynes manual as procedure for TPS check and replacement.

Good luck. I would still check the EGR. Especially if you live in a big city and are required to burn the ozone friendly gas. That stuff seems to wreek havic on engines.

 

I had a similar problem, turned out to be a bad wire in the dizy going to the coil.

 

It could be a wire in the dizzy. The TPS can be replaced without the whole TB. You just have to know how to set the TPS the right way.

Check all you wires going into you distributer, and try checking all ur wires IN your distributer.
Loose wires suck!