I checked out the voltage of my TPS last night because it seems as if my ECU goes into WOT mode a little too early. I sometimes don't even have to give it 1/2 throttle and the A/F meter quits bouncing and is burried in RICH.

I had 4.95 volts across the two outer wires which IIRC is fine. I had .520 between the middle wire and the ground wire with no throttle, and I adjusted that back to .495. The thing I wasn't sure about was the WOT reading. Mine came up as 4.60 at the max the Erik's Racing TB could possible open. Is this correct?

I'm just trying to eliminate this as a possibility since it's easy to adjust. I plan on hopefully picking up my brother's S200 when he gets the S300, which would definantly solve any A/F issues. But for the mean time, I'm hoping to get rid of the slight bog I get every now and then when I try to go from the lower RPM's.

 

fully close 0.5V
WOT 4.5V

 

A WOT input to the ECM should kill the AC, does it??? About 80% throttle I think.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pentaq &raquo;</TD></TR><TR><TD CLASS="quote">fully close 0.5V
WOT 4.5V</TD></TR></TABLE>

awesome. 2nd question for you.. the Erik's has those allen screws that adjust where the throttle sits when closed, and also one to adjust the max point the throttle can open to. Should I bother to adjust the max setting back so the reading at WOT is 4.5, or do you think the 4.6 is fine (I know it's a small *** adjustment in reguards to the posistion of the throttle plate, but it can't hurt to ask right? )

 

No idea...
I even wonder if ECU will freak out seeing 4.6V from TPS...

 

no it wont...as longs as voltage at wot is 4.5 v and higher,its ok cuz theres a 5.0 v voltage referance

 

The ECU switching into open loop around half throttle seems about right anyway.