Well after much procrastinating I went out and bought a multimeter to test my TPS after everyone told me that was most likely the problem since I've replaced just about everything else that has to do with high throttle bogging and funny idle. So I learned how to use it and hooked it up the red wire and got a reading of 4.5V at idle and .5V at WOT, which is exactly the opposite of what it should have been! I didnt adjust it at all because I was kind of baffled with the results I got. Does anyone have any clue what the issue could be, or if I should unscrew it and start trying to adjust the TPS to .5V at idle and 4.5 at WOT?

TIA

 

sounds like someone had it off and put it on 100% backwards (witch is possible, i did it :-P )

 

where did you hook up the black lead?

 

I probed the valve cover to chassis ground with the black.. is that right?

 

that's the right way to do it.. but i usually go straight back to the battery's (-)

ok, let's try this. hook the black lead to the battery's (-)... use the red lead and check the other wires on the tps.

for the yellow/blue wire, you should be getting close to 5v.
on the green/blue wire (green/black if it's obd2), you should get 0.1v
and i'm assuming you were checking the red/black wire for the tps voltage so forget that one.

 

^

 

 

Ok, imagine you are looking at the throttle body from the firewall out towards the bumper. Does the Harness plug point up and to the left, or down and to the right?

 

If I was in the car looking at the motor with X-ray vision it would be down and to the right.. it that right?

 

 

anyone out there

 

bump, got a problem with my TPS also...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93CX &raquo;</TD></TR><TR><TD CLASS="quote">If I was in the car looking at the motor with X-ray vision it would be down and to the right.. it that right? </TD></TR></TABLE>

to X-ray. Yes that should be correct.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 93CX &raquo;</TD></TR><TR><TD CLASS="quote">anyone out there</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by taz77 &raquo;</TD></TR><TR><TD CLASS="quote">that's the right way to do it.. but i usually go straight back to the battery's (-)
ok, let's try this. hook the black lead to the battery's (-)... use the red lead and check the other wires on the tps.

for the yellow/blue wire, you should be getting close to 5v.
on the green/blue wire (green/black if it's obd2), you should get 0.1v
and i'm assuming you were checking the red/black wire for the tps voltage so forget that one.

</TD></TR></TABLE>

 

^ why did you post?

 

i wanted to see what you were getting at the other 2 wires

 

oh sorry didnt understand. okay i'll probe the other two tomorrow

 

I also have a tps problem, its ******* awesome, all of my voltages read back perfect, no electrical problems what so ever... woot ghosts in the machine, so now I;m going to replace my tps just because.

 

I probed the other two wires and got correct voltages

 

if the 5V and ground wires are reversed the TPS voltage will be reversed like you mentioned.

 

now... is there ANY reason you can think of on why the voltage might have been reversed? (i.e., you just bought an aftermarket tps, or tb... you just bought the car and this was the first thing that happened when u drove it, someone installed some mods into your car... ANYthing...?)

if u always had the car, and this NEVER happened before, replace the tps

 

This problem started when I got a new TB because my old one had a sticky throttle plate

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by taz77 &raquo;</TD></TR><TR><TD CLASS="quote">that's the right way to do it.. but i usually go straight back to the battery's (-)

ok, let's try this. hook the black lead to the battery's (-)... use the red lead and check the other wires on the tps.

for the yellow/blue wire, you should be getting close to 5v.
on the green/blue wire (green/black if it's obd2), you should get 0.1v
and i'm assuming you were checking the red/black wire for the tps voltage so forget that one.</TD></TR></TABLE>

i got the same tps problem, are these voltages at idle or wot?
thanks
daniel

 

ttt

 

idle should be .5v, WOT should be 4.5v. still havent resolved my problem