von

Thats it...I only have one and I heard I need two. I Have done the light bulb methed until one light just came on but theirs still this slight jerking under light throtle. Like an on off. So how do I check them individually if I can. Its obviously the 89-91 engine. thnx

mazdaspeed7

I dont remember the wire colors off-hand, but heres how you do it. Follow the wires from the narrow range TPS to the plug. 2 of them should be on one end of a plug. Insert a paperclip into each of those through the back of the connector, and clip the leads for a volt meter onto the paperclips. Then set the voltage to 1V when the car is fully warm and idling.

crossbar17

how do i do this on a 88 SE??

jacob

Set the voltage by turning the adjuster screw? My car likes to jerk under light throttle also, like the other guys, like an on-off switch. When I checked my TPS with an ohmmeter, the ohms were in the right spot under WOT, but one was a little low and one was a little high when the throttle was closed. I tried adjusting the TPS adjuster screw, and got the readings a little closer, but then it started doing that jerking under light throttle. Also, is it necessary to reset the ECU after tinkering with the TPS?

Josepi

Yes.