TPS issue?
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TPS issue?
Hmm, I was thinking about this today.
Could all of my problems be because of a bad TPS?
My car doesn't idle correctly, and it's either idling or at 2k, there is no real inbetween when it comes to throttle movement.
How can I test the Throttle position sensor?
If the TPS IS bad, would it throw a code? I find it incredibly hard to believe that my old IAC and the brand new one would be bad. The IAC should last the life of the car, or at least 1/2 the life. The odds that I got 2 bad ones in a row, is unlikely.
Could all of my problems be because of a bad TPS?
My car doesn't idle correctly, and it's either idling or at 2k, there is no real inbetween when it comes to throttle movement.
How can I test the Throttle position sensor?
If the TPS IS bad, would it throw a code? I find it incredibly hard to believe that my old IAC and the brand new one would be bad. The IAC should last the life of the car, or at least 1/2 the life. The odds that I got 2 bad ones in a row, is unlikely.
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2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]
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Josh
surrealmirage.com/subaru
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surrealmirage.com/subaru
1990 Legacy (AWD, 6MT, & EJ22T Swap)
2020 Outback Limted XT
If you need to get a hold of me please email me rather then pm
throttle not closing ?
yes test the voltages but also look for the possibility that the throttle itself is not returning to closed position. When its doing the 2k bit, try to manually close the throttle further. If that makes a change, the throttle body may be gummed up, or the cable or pedal assembly is farked. See if pulling up on the gas pedal slows the idle. I once traced all the electronics in a car only to find the carpet was binding up the pedal
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Yea, what's weird is the erratic idle, it's never constant. Sometimes 1k, sometimes 2k, sometimes 1250.
I throw an IAC code, but that's weird.
Sometimes the car will "hang up" at 2250 or so and just hold there until I tap the gas again. It's really really weird.
Thanks Josh!
I throw an IAC code, but that's weird.
Sometimes the car will "hang up" at 2250 or so and just hold there until I tap the gas again. It's really really weird.
Thanks Josh!
2009 Outback 2.5XT. 5MT. Satin White Pearl.
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]
2009 Impreza 2.5i Premium. Blue.
[quote="scottzg"]...I'm not a fan of the vagina...[/quote][quote="evolutionmovement"]This will all go much easier if people stop doubting me.[/quote]
TRY IT!
It can be super cheap and easy to swap out the whole throttle body for another, and see what happens.
It worked beautifully for me when I was having my Idle Switch code going off.
I skipped the TPS testing procedure and just did that, cuz I had a spare TB right there, and did not have a proper "thickness guage" anywhere.
My symptoms were a little bit different though:
Mostly just Very erratic RPMs during driving... a couple times it acted up while idling too... stalled once. Sometimes it ran perfect, but usually only for a few miles at a time.
Anyway... It was SO flippin' easy!
I pulled the TB off my spare N/A motor. Stuck it on the SS, cleared the codes... presto.. no more problems. It took all of 30 minutes.
Thanks AGAIN to all who helped me with that!!!!
Ignoring the invariably invaluable insight of Vrg3, I did not replace the TB gasket, because the one from my donor engine looked almost brand new, and popped off quite cleanly.
It's certainly worth a try... Junkyard TBs can't be too awful expensive...

It can be super cheap and easy to swap out the whole throttle body for another, and see what happens.
It worked beautifully for me when I was having my Idle Switch code going off.
I skipped the TPS testing procedure and just did that, cuz I had a spare TB right there, and did not have a proper "thickness guage" anywhere.
My symptoms were a little bit different though:
Mostly just Very erratic RPMs during driving... a couple times it acted up while idling too... stalled once. Sometimes it ran perfect, but usually only for a few miles at a time.
Anyway... It was SO flippin' easy!
I pulled the TB off my spare N/A motor. Stuck it on the SS, cleared the codes... presto.. no more problems. It took all of 30 minutes.
Thanks AGAIN to all who helped me with that!!!!
Ignoring the invariably invaluable insight of Vrg3, I did not replace the TB gasket, because the one from my donor engine looked almost brand new, and popped off quite cleanly.
It's certainly worth a try... Junkyard TBs can't be too awful expensive...
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Did you have the faulty IAC replaced yet?
It would be killer if a new TB fixed your woe's Phil.
It would be killer if a new TB fixed your woe's Phil.

-Matt
'92 SS 5mt. All go and no show. Sold :(
'94 Audi UrS4 Modded (new project)
'96 Outback 5mt.
'07 Legacy 2.5i SE
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Oh... and I hope the fucker get bunked with Gunter, arrested for raping Gorillas.[/quote]
'92 SS 5mt. All go and no show. Sold :(
'94 Audi UrS4 Modded (new project)
'96 Outback 5mt.
'07 Legacy 2.5i SE
[quote="Redlined"]
Oh... and I hope the fucker get bunked with Gunter, arrested for raping Gorillas.[/quote]
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Phil - It doesn't look like it's on their price list, so it'd be up to their discretion. In my experience they're pretty generous on weekdays, so I would expect you'd pay around $15 or $20 maybe.
MK - Yes, it would be infinitely cheaper to test all the stuff, but you can't test everything... like if his throttle body is actually letting too much air through (like if maybe the sealant around the throttle plate is gone?).
MK - Yes, it would be infinitely cheaper to test all the stuff, but you can't test everything... like if his throttle body is actually letting too much air through (like if maybe the sealant around the throttle plate is gone?).
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