TPS Voltage

Jasonb61 · Nov 2, 2009

Ok, I am trying to find this in the FSM but don't know my way around it too well and figured I may get a quick answer here...

What is the voltage at the TPS when the throttle is 100% open and when it is idling? I am going to *assume* it's 5v when at 100% but someone correct me if I'm wrong.

Little Blue Guy · Nov 2, 2009

it's usually less than 5v..sometimes between 4v & 5v

Idle is somewhere between .5 & .8 I think...all cars & trucks are different

viperkota · Nov 2, 2009

the so called "ideal" voltage is .76 with the key on engine off....

as for WOT....it will be less than 5 volts as 5v is suppose to be the max for the sensor and the engine will only run at 80% of it max potential......its a "safety" feature form the factory and so called "safe" zone for all engines

caulk04 · Nov 2, 2009

WOT I get 3.9-4v with the engine off.

Closed, I'm running .68. Again, engine off.

If I go any higher than that, it's real touchy and sometimes the PCM throws a code for TPS voltage too high at idle. P0123

Little Blue Guy · Nov 2, 2009

caulk04 said:
WOT I get 3.9-4v with the engine off.

Closed, I'm running .68. Again, engine off.

If I go any higher than that, it's real touchy and sometimes the PCM throws a code for TPS voltage too high at idle. P0123

That sounds about right....again....most every vehicle is different

Jasonb61 · Nov 2, 2009

viperkota said:
the so called "ideal" voltage is .76 with the key on engine off....

as for WOT....it will be less than 5 volts as 5v is suppose to be the max for the sensor and the engine will only run at 80% of it max potential......its a "safety" feature form the factory and so called "safe" zone for all engines

Interesting, never heard of that. I need it to run at 100% :nana:

I actually need a way of telling when the truck is at WOT or close to it.. Does the 4.7 has some type of WOT switch?

viperkota · Nov 2, 2009

Jasonb61 said:
Interesting, never heard of that. I need it to run at 100% :nana:

I actually need a way of telling when the truck is at WOT or close to it.. Does the 4.7 has some type of WOT switch?

with 100% the reliability will be down a bit. but would we all.

as for a WOT switch...no thats what the tps is for, it tells the computer......but what are you needing one for? there are some that are for N2O kits that you could possibly use for something else.

Little Blue Guy · Nov 2, 2009

The WOT switch is actually in the ECM...all it does is turn off the AC compressor at wide open throttle...or close to it

TPS Voltage

Jasonb61

Little Blue Guy

viperkota

caulk04

Little Blue Guy

Jasonb61

viperkota

Little Blue Guy

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