At 05:57 PM 8/5/2013, Bryan Feddish wrote: >Nope, no voltage across the TBS. If I take the wires off the TBS >and measure the volts it 5+ V. When I put an ohmmeter across the TBS >(engine off) and it's reading a closed circuit at what would be idle >and if I open up the throttle it stays a closed circuit. If I move >the throttle around sometimes it opens up and the ohmmeter drops to >0 for a split second. > >Sounds like a bad TBS doesn't it? Bad switch, or conceivably a short in the switch harness. You can try squirting contact cleaner around the switch actuating pin and then exercising the switch, may have to peel back the rubber boot to get to the pin. You want the stuff that leaves an oily residue, Radio Shack has some. You can see from the construction which is the closed-throttle switch and which is the W-O-T switch. Either switch may be the shorted one if there's no mechanical reason for one of them to be closed. Push come to shove,, run without them while you figure out what to do. It doesn't bother the 1.9l behavior at idle much, it's mostly for deceleration shutoff which you won't notice the lack of particularly. But remember that you don't have full-throttle enrichment so avoid full throttle to obviate any possibility of overheating the cylinders from lean burning at full throttle. Yours, d |
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