170155

Hello everyone...

My wife was driving home when the Engine & TCS lights came on.
The car started shifting funny but she made it home...

The code I recovered was P0122 Throttle Position Circuit Low Input.

I erased the code but the car "jumps" a bit when going from R to D
but not N to D or from P to R.

Could this jump be linked to the TPS?

Aside from just replacing the sensor, can it be tested?

Any help, as always, is appreciated.

170155

Anyone?


I have done some research on this site about the TPS being part of the throttle body but does anyone think it could attribute to the little jump
felt going into D?

bowlgers

get another throttle body tps is part of it try a bone yard or ebay dealers about 250 range depending were u live

6MTUA5

iTrader: (2)

It is a sensor on the front side of the TB

6MTUA5

iTrader: (2)

EDIT: That smiley is supposed to be WERD

Bolt 15 goes right by it

6MTUA5

iTrader: (2)

Car-part.com searches online junkyards. You can find the TBs on there for pretty cheap. I need to get one b/c my IACV is FUBAR and my TPS got ripped off by the chain when we were pulling my motor for the swap.

170155

I was deciding if I should get new or not...also, the way the car jumps when going into D, it feels like a trans issue and with the TL's history of trans issues...I'm not hopeful that all it is will be this TPS....any words of encouragment?

6MTUA5

iTrader: (2)

That's the thing it's kind of built into the TB

fsttyms1

Others have had the TPS sensor cause the jump your feeling.

fsttyms1

Should have pulled it this way...... IM off

170155

So would you

A: Buy a new one at $400
B: Buy a salvage one at $100 but have a giant ? on life expectancy or if it even works
C: Test drive one from an Acura dealer and do the old switch-a-roo

fsttyms1

Buy a used one. They arent a common issue here.

6MTUA5

iTrader: (2)

Always have to 1up me, don't you?

Find a used one

fsttyms1

Like my Vtec works

170155

I went with a used one. The salvage yard extends a 30 day warranty, enough to
know if it is dead right now. It looks like 4 bolts and a gasket....does that sound right?
I ordered both gaskets from Autozone, not knowing which is the one I will need.
I just need to clean the salvage throttle body out....carb cleaner or MAF cleaner?

fsttyms1

yep pretty easy to change. Get a carb cleaner and a old tooth brush and clean things up. Take the IACv off and clean that out while you at it.

6MTUA5

iTrader: (2)

It's probably good that I'm running in limp b/c I need to get my valves adjusted. I'm just going to keep telling myself that.

170155

Well, 2 bolts, 2 nuts, 4 disconnected hoses and one disconnected main intake later...I have the salvage yard unit on. Everything reconnected, battery cable in place and I start the engine. Starts fine but then the engine revs to 3k RPM and stays there so I goose the throttle and that starts a hunting idle from 1k to 3k RPM.

ideas?

Gfaze

Bad TB most likely. CEL on?

170155

Nope, no codes but the engine is cold and I am running it long enough to get warm.
Partly because I don't like working on a hot engine and because I don't want to make things worse.

6MTUA5

iTrader: (2)

Sounds like the IACV getting stuck. Did you take it off and clean it before you installed the TB?

yunginTL

i just ordered mine today i had the same problem i thought it was the tranny at first

170155

6MTUA5---No I didn't take the IACV off...which sensor is that? The one on the bottom?
with the torque screws? Is it a trick putting it back? like only a special way?

fsttyms1

Iac is on the bottom. You must have a 99? Cause every TL ive seen had philips screws. Take it off and clean it with carb cleaner. Care full not to ruin the rubber gasket (can reuse it)

fsttyms1

Keep telling yourself that

6MTUA5

iTrader: (2)

Yea the 99 does have a star pattern IIRC. I found this out by sitting there forever with a stubby Phillips head and just could get it. Finally I took the whole TB off and saw that they were different.

170155

I was wrong, the $#@! screws are not torque or hex or anything else...the PTB used a 5 pointed star shaped screw....just great.

I went to Lowes, Home Depot, Pep Boys and Autozone...no one has a 5 pt star tool

Time to drill them out, any last words?

fsttyms1

What a PITA.....


170155 can you get a philips or a torx or a flat head to fit in there just to make it work? Once removed take the screws to a hardware store and get ones that are philips or something easier to install and remove.

170155

The bottom sensor has a total of 4 screws. 2 philips and 2 bitch kind.
The philips ones remove the while thing while the bitch ones, now that I have them
drilled off, reveal a magnet of sorts on a spindle.

Where do I clean it?

fsttyms1

that piece is suppose to move to allow air to flow. Clean all the way around it. get all carbon and parts dirty clean

170155

doing it now...

170155

ok, the salvage yard one is 80% sticky trying to turn, my old one was 15% sticky turning
so I will use my old one...I'm off to Lowes for some screws...

$#@! 5 pt star screws...ughfm shitinrattin fricken ....rrr

170155

All done.....

I love you guy!

It is fixed, no more code, no more jumping and my trans with 190k is still going strong....
(finding some wood to knock on...)

This site rocks .... better than the dealership, couldn't get any advice or help from them.

reaper101

does anyone know what the part is called i got this code and my car has been jerking for a while but im just guessing its the trans but this code popped up the other day when i was pushing the car rough and i cleared it and it stayed away for a while but now pops up everytime i turn my car on after being cleared so im sure i need to replace that part

tks

3.2TLc

Throttle Position Sensor is what they were working on.

A P0112 code could also be low voltage within the IAT sensor's circuit. Check wiring and connectors, clear code and recheck if it comes back.