LS1AC-Cobra

hi guys
I'm steadily getting the 0122 Code (TPS low)
I got A-tap hooked up and found out that my TPS reads only around 11% at WOT, swaped in a brand new one only to find out it got even worse, the brand new TPS only reads 7.5%, I've put the other TPS back in and it went up to 11% again.
Anyone has an idea what could be wrong

LS1AC-Cobra

someone said after the TPS has been removed it needs to be calibrated if reinstalled, is that true?
I think its not necessary, since you can slide it on the ThrottleBlade Shaft only in one position

WS6FirebirdTA00

iTrader: (33)

unplug the sensor, turn the key on for one min but dont start the car, shut the car off, plug the sensor back up, and you should be set

if not check the voltage on the tps sensor, it should be 0.57-0.67 v

LS1AC-Cobra

ok, did that unplug thing, still the same readings.
I checked the wires from the TPS to the PCM, they are all ok, I'm getting 5V to the TPS plug, so I think on this side everything should be ok.
Now, I measured the resistance of the TPS 0.671kOhms to 3.780kOhms are these Values ok?

WS6FirebirdTA00

iTrader: (33)

you need to log the TPS voltage and see what the computer reads, and it shoudl be within that range i said. if its 5 volts, which i think we arent talking about the same thing, but if it is 5 volts then something else is wrong, it should be closer to about 0.60 volts

patSS/00

iTrader: (6)

The resistance values seem right, to be sure you can measure the voltage on the 3rd wire (not the 5V reference, not ground) - it should vary from around .6 to over 4.5V as you rotate the shaft. If that is OK then either you have a PCM problem or your Autotap is screwed up.

LS1AC-Cobra

WS6Frbrd: I have the 5V at the plug, think I know what you meant!
I measured the outgoing Voltage of the TPS today
at closed Throttle it reads 0.0439Volts at WOT its 0.3215Volts
Isn't the TPS only for the Emissions stuff?
Since I removed everything that had something to do with emissions!

WS6FirebirdTA00

iTrader: (33)

no this is not what i meant


this is what i meant, it should be 0.60 v at closed throttle and 4.6 v or so at wot, now you have to figure out why your voltage is so low, if you replaced the sensor i dont really know what else it may be because you are getting 5 v source



nope, this is so the computer will know what your throttle % is so it will know how to command fueling and what not for different situations

LS1AC-Cobra

ok, just measured the resistance between the Signal wire and the Grd wire that goes back to the PCM, with closed throttle its 1847ohms at WOT its 8969ohms if I measure between Signal wire and chassis grd I'm getting 1975ohms closed and 9128ohms WOT I think these numbers are also within the normal range
could it be that my PCM is screwed up?
or is he just acting stupid because of all the "unnecessary goodies" I gave to those guys from WasteManagement before I implanted the Motor into my car?

WS6FirebirdTA00

iTrader: (33)

like i said, the voltage is suppose to read ~0.60 v at clsoed throttle and ~4.60 at wot, that is what your problem is, your getting, like your coputer said, love voltage. you said you replaced the sensor right? check and make sure all connections are good and no wires are frayed.

TAQuickness

iTrader: (28)

have you check the resistance from the TPS ground to the negative battery post?

LS1AC-Cobra

resistance between the TPS grd to neg Battery is around 0.24ohms which I think is normal.
Any other suggestions what could cause this problem???

WOT

iTrader: (1)

Did you ever get this fixed? I am having the same problem.

LS1AC-Cobra

WOT: I've been busy with other projects during the winter, so I never really bothered about that problem, but now seems like spring is coming, I finally need to have it fixed
Did you find a solution yet?