Tell me if im correct . Putting a jumper in the fuel pump test port should bypass any any fuel starvation problem caused by the tps shouldn't it . I've got a bad bucking problem , and by the looks of what came out of my filter it looks like my pump could be worn out . I have already pulled the codes . There was a 7 tps code , but i think thats from when i unplugged it with it running . Thanks for any help .

 

Putting a jumper in the fuel pump test plug will not bypass anything related to the TPS. By putting the jumper in the test plug it makes the fuel pump come on as soon as the ignition is turned on. The TPS is a whole diferent system, but if it goes bad or is out of adjustment it can and will cause drivability problems.

 

i've got almost 1 volt with the throttle plate closed and less than 5 volts at wot . is that within range or not ?

 

The Factory Service Manual shows resistance values instead of voltages. Closed throttle is 0.2 to 0.8 kilo-ohms. Fully open throttle is 3.3 to 10.0 kilo-ohms. You should be checking across the VTA and E2 pins.

The jumper you refer to merely forces the fuel pump to come on and run. Normally, after the engine is started, the fuel pump operation is controlled by the fuel pump switch in the air flow meter.

Your fuel pump could be operating but your filter or lines may be clogged (you could have trash in the fuel tank as well).

 

So you're asking if putting full power to the fuel pump will overcome restrictions in the fuel delivery system... right?

Do you realize that the fuel pump receives full power at all times and the fuel pressure regulator diverts excess pressure back to the fuel tank when engine vacuum is high (such as what you would encounter at idle)?

Fuel pressure does not affect throttle position sensor readings at all.

Clear your codes by disconnecting the battery for a minute or so then start over.