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Discussion Starter #1
After finishing my DOHC swap, I hooked up my Hellion OBDII scanner and took a drive...

First thing I notice is that the "Calculated Load" at idle (running) is between 18-20%. Too much right?

I scroll down the list of other real time values and notice that my TPS Position is listed at 18%. Also high (at idle should be 0% I think).

So I go back home and check my TPS voltage... Here we go: at idle TPS says .92volts, at WOT it says 4.65 volts.

What is wrong here? I can't figure this out.

Chad
 

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TP voltage :KOEO=.53-1.27, Hot idle=.53-1.27, 30mph=.9-1, 55mph=1-1.1
I don't have a % value for the TPS or a WOT value at this time.
Load at Hot idle=10-20%, 30mph=16-30%, 55mph=20-27%
This is according to Ford's PCED manual.
 

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Discussion Starter #3
Okay so the calculated load seems to be in check...

Any Idea why my TPS reading on the Hellion is showing 18% at closed throttle?

Like I said, the reading at the tps sensor itself is .96 or so.

Thanks for the info!

Chad
 

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the value is correct,it will never read 0 at idle.mines is 19% .
 

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Look at it this way..... 1 volt is 20% of 5 volts, and the reference voltage to all sensors is 5 Volts.

HTHs

Joe
 

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Discussion Starter #6
Alright guys, thanks for the info.. Much appreciated.

I guess what threw me off was when I plugged the Hellion into my 97 Suburban and it comes back at TPS 0% when the throttle is closed and goes smoothly all the way to 100% at WOT. I guess they are much different though.

Thanks!

Chad
 
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