dlazrael

I have an 08 Supercharged GT. The s/c has been on the car over 2500 miles now, so I don't think its directly related to the s/c itself. No other motor mods.

A couple weeks back the car started throwing the wrench and going into shutdown mode, enough to roll to the shoulder and dies.

If you leave it in 'run' and attempt to restart, it just cranks on the starter

If you remove the key, reinsert and restart, runs like a champ. It had done this three times in a day, a little google-fu said it could/probably is the TPS, so I got a new one.

It happened again today, heading home, downshifting from 5th to 4th it just cut power and died, 3/4 times it has died has been on downshift.

I get the following codes:
P0010 "A" Camshaft Position Actuator Circuit (Bank 1)
P0446 Evaporative Emission Control System Vent Control Circuit Malfunction
P0481 Cooling Fan 2 Control Circuit Malfunction
P2105 Throttle Actuator Ctrl Sys-Forced Engine Shutdown
P2135 Throttle/Pedal Pos Sensor/Switch A / B Voltage Correlation

I'm at a loss here

dlazrael

Symptoms Symptoms of a P2135 code can range from stalling when you come to a stop, total lack of power, no acceleration, sudden loss of power at cruise speeds or stuck throttle at current rpm. Additionally, the check engine light will illuminate and the code will be set.

Read more at: http://www.obd-codes.com/p2135
Copyright © OBD-Codes.com


This closest resembles what is going on.

I'm hesitant to call it the Cam sensor or the PCM because the car runs fine all the time, and I am more leaning to the TPS sensor wires, since those were cut and spliced by me during the s/c install.

dlazrael

Could a low battery cause all this? 12.39V Cold, 14.79V motor running

dlazrael

More checking. Battery 12.06V Key On Engine Off. VCT Pass 11.93V VCT DRVR 11.03V (sensors).
CAM sensors don't read with car off, ELEC THROTTLE default to 0, TPS sensor reads (Positive in first pin, Neg in Rest as follows 0, 3.24V, 4.12V)

JJHoover

Have you tried re installing the tune, I have found a lot of problems tend to got cleared up that way.

dlazrael

No.. I'll have to try that tomorrow first thing

moosestang

I don't think a low battery would cause all that mess. My battery is low all the time.

P2105 Throttle Actuator Ctrl Sys-Forced Engine Shutdown

^^^This sounds familiar. Someone recently had this code. Do you still have the stock alternator? No aftermarket throttle body right?

Did you solder the sensor wires that had to be extended or use the barrel crimp thingies? I went back and redid all of mine years ago after buying one of those heavy duty soldering irons from lowes. Bad connections are a bitch to diagnose.

moosestang

Did you get a genuine Ford motorcraft tps or one from discountautozoneparts? it's either bad throttle body, bad connection or the tune imo.

How many miles on the original throttle body?

dlazrael

Stock Alt, OEM TB, BWD (advance auto) TPS, around 87k on the TB. I reinstalled the tune, and the wandering idle disappeared, for now... I also ran a datalog while spraying TB Cleaner at all the possible leak sites... The tuner (BAMA for now) is telling me he's seeing unmetered air compensated with extra fuel, but I have no idea how to read these things lol.

I am trying to figure out what the gauge wires are, and I think I'll end up having to get a new connector or two due to the splices, and was going to redo them soon. The fact that the issue isnt constant makes me lean towards a ground out somewhere.

I tested the battery anyway, it came up good so I'm not worried about it anymore.

Another friend is going to send me an extra OEM GT TB until I can end up getting the 62mm one sometime in the future.

dlazrael

I don't think its the TPS because it happened after replaceing the TPS, so like you I think it's either TB, Tune or a ground out