Knissone

Hey all, just wanted to keep y'all updated. I cleaned the throttle body on Saturday morning. It wasn't that dirty at all, so I didn't expect it to solve the problem, but I've since put 150 miles on the truck and so far so good! Here's to hoping it stays that way...

Thanks for your advice!

techrep

iTrader: (1)

Good to hear...keep us up to date.

Knissone

Alright so my problem has come back, and this time it threw the check engine light, and started running rougher until I restarted the engine. It's the same codes.

So I think I'm just going to swap the throttle body. Going rate from Ford for the genuine part is $408, so the question is this: Is it really worth buying genuine? Really just looking for opinions I guess.

Thanks!

F150Torqued

My opinion is: Why are you considering repacing the TB at $408.00 at all when there is nothing in the DTC discription that says TB. (•P2135 – Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation) See http://www.autocodes.com/p2135_ford.html


Possible causes described there are:

- Faulty electric throttle control actuator (TP sensor 1 and 2)
- Throttle Position Sensor harness is open or shorted
- Throttle Position Sensor circuit poor connection
- Faulty accelerator pedal position sensor


You have tried that,



but not that.


You've eliminated the cleanliness issue and narrowed it down to either TPS or Accelerator Position rheostat - ($65.00 or $100-$200 respectively), or possibly wiring which can be giggled while monitoring signals on your Edge for lots less $$ than either of those.


See also:
http://www.ford-trucks.com/forums/14...l#post15861958

Knissone

Well, the problem is so momentary that I doubt I could see it on the edge, but the accel pedal position usually runs smoothly on the edge.

It's my understanding that the TP sensors are integral in the throttle body and cannot be purchased on its own, and most people report that replacing the throttle body (and, effectively, the TP Sensors) fixes their identical issues. My truck has over 110k miles and this seems to be a common issue, so I figured it was just my turn.

But you're right, it is the most expensive fix...

Mod (Ret.)

What about a used one? This way, if it fixes it, you would be correct. If you have the same issues/codes, then you saved $408.00, and would be out the cost of a used part.
I'm not one to toss parts at a problem untill I know for sure...eventually you fix the problem, but at a much higher expense then just identifying the problem and replacing the faulty part.

F150Torqued

@Bucko is trying to figure a way to hold the cost down too. But something else occurs to me - for less than $400.00 you can get a scanner that 'graphs' the relevant OBDII signals if your Edge won't. It is true that it could still be the TB (Throttle Position Actuator) and I'm not sure if THAT is changeable. But the Throttle Position "SENSOR" certainly is.


http://www.ford-trucks.com/forums/14...l#post15861958


However - if you replace the whole TB (new or used), it can still be the accelerator pedal rheostat. According to the Document I attached to post #10, this thread, the DTC you are getting is just saying the "rationality" test is failing. The EQuizzer microprocessor is not satisfied that the throttle position is REALLY where it thinks it should be relative to where the accelerator pedal is. And it lets you figure it out from there. About all else you can do is replace the accelerator pedal actuator and the throttle body - for about a grand.

Knissone

This is new info to me, I thought the sensor was buried in the circuitry with the motor on the other side of the throttle body, and it's my understand that side can't be purchased separately from the throttle body. I will certainly try a new sensor and hope for the best.

Thanks for that info! Hope it saves me some $$$...

Knissone

Alrighty, update time since I hate unfinished threads.

Yesterday I rolled 500 miles since I swapped the Throttle Position Sensor and haven't had any problems since!

Thanks all!

techrep

iTrader: (1)

Make sense...glad to hear your good to go...