2g3n7

get out of adjustment when theres rapid temp change from hot to cold? mine does and its kind of annoying just wondering if anyone elses does that

w0ppe

I would suggest to check your TPS vs. a multimeter. If your resistance constantly changes, you may have a bad TPS and will need to replace it...

Also, you can't tune your TPS when the engine is cold. You won't get an accurate reading.

SpikeDerailed

iTrader: (7)

Are you checking your TPS with the engine HOT or COLD when you say its changing in relation to ambient temp? TPS needs to be set withe the engine hot after the thermowax cam has rotated away from the TB.

2g3n7

yeah it changes when its warmed up

2g3n7

and i meant rapid change in the weather outside from hot to cold

HAILERS2

Normal as can be. The change is cause by the waterthermo sensor and how it interacts with the throttle linkage.

Normal fully hot engine/water temp results in an approx 1vdc output. If the water cools off the linkage moves which in turn means the plunger of the tps moves which in turn means the output of the tps changes.

Colder water means a higher output of the TPS. Hotter water temp means.....yes, you said it.

When you start a cold engine the tps output might very well be in the 2-3vdc range. As the water heats up the voltage output drops and finally reaches an approx 1vdc output when the water temp is ??? approx 180* give or take.

TPS output is not stagnant. It changes just as mentioned just above.

Like go set your tps with a fully hot engine to spec. Turn the engine off and go away for fifteen or thirty minutes on a cool/cold day. Then come back and the 1vdc ain't thar no mo. It's risen up to a higher figure.