Archived Whoah Feels like the APPS Sensor went out

[ToolManTimTaylor]

Goin' down the road and the truck just completly stops responding to accelerator input. Then springs back to life and cuts in and out then is fine for a day or two. I pulled codes today and have the usual 1693 as there is a host of codes as follows with a MIL mind you:

<hr>

P0753 (M) Trans 3-4 Shift Sol/Trans Relay

Circuits

An open or shorted condition detected in the overdrive

solenoid control circuit or Trans Relay Circuit in JTEC RE

transmissions. Was MIL code 45.



P0753 (M) Trans 3-4 Shift Sol/Trans Relay

Circuits

An open or shorted condition detected in the transmission

2-4 shift solenoid circuit (4-speed auto. trans. only).





P0743 (M) Torque Converter Clutch Solenoid/

Trans Relay Circuits

An open or shorted condition detected in the torque

converter clutch (part throttle unlock) solenoid control

circuit. Shift solenoid C electrical fault - Aisin transmission



P0743 (M) Torque Converter Clutch Solenoid/

Trans Relay Circuits

An open or shorted condition detected in the torque

converter part throttle unlock solenoid control circuit (3 or

4-speed auto. trans. only).





P1765 (M) Trans 12 Volt Supply Relay CTRL

Circuit

An open or shorted condition is detected in the

Transmission Relay control circuit. This relay supplies

power to the TCC



P1765 (M) Trans 12 Volt Supply Relay Ctrl

Circuit

Current state of solenoid output port is different than

expected (4-speed auto. trans. only).

<hr>



Some Trans mods can lead to a 743 from the use of a smart controller?



But why no codes from the ECM? If I remember right the codes used to cycle PXXX Pxxx PDone Exxx Exxx EDone or am I remembering something that never was.



The reason I ask is Why the ZERO input from the pedal?

Check my Profile or Here for mods , It shoulda set a code ... . ESPECIALLY with a MIL lit up like a charm.

 

[ToolManTimTaylor]

Well Now it just cuts off like someone is hitting the key on ... ... ... ... ... . off..... on..... offffffffff... ... ... ... ..... on... . o... . o... . on. offffffff.



Is it an Injection pumperelle?

 

[LSMITH]

Tim, it sounds more like a transmission harness all smashed up. Are you sure it is in good shape?

 

[KatDiesel]

Just curious, do you have a lockup switch? If so that would explain the 743 and 1765 codes.

 

[ToolManTimTaylor]

Nope no LU switch just a smart controller. I just got back and have a recording of the motor..... It is most definatly the motor cutting on and off ..... kinda like running a gasser out of fuel.

 

[ToolManTimTaylor]

My Smart controller I have wired to a switch so it comes on ONLY when I want to use the Exhaust brake. Also I just made a Full boost launch pass thru ALL gears to 115 Mph (thats all she had) and Data reads as follows



RPM:3373

Boost: 38. 7

EGT 1573



Boost seems low and egt's even seem low (fueling issue?) considering I made the trip all the way upstairs ... . Not just a quarter mile pass.



After that run she cleared up. Then 3 miles down the road driving like a normal human #ad
It started the cutting out again. I then held my foot rock steady to maintain 55 Mph and it did the cutting in and out again... ... . NOT A SURGE as you drop rpm's and speed when power to the cummins is cut out. No rhyme or reason either smooth roads ... . steady rpm and road speed. Checked codes when I got home and same ol same.

 

[ToolManTimTaylor]

Welp I gotta take the mustang to work as I can't trust the truck on the highway. I'll check back on/off and maybe there might be something I can do to it tonite.

 

[BarryG]

I would agree that with those codes a trans harness/wiring might be the culprit not sure why it would have no pedal response. I do not know how the apps interacts with the trans though. When my vp went out it started by just cutting out like you're describing and then would be fine (truck kept running but only at an idle). Mine only did it under certain conditions at first then got more random. However when mine was acting up it would smoke blue grey like crazy and even backfire. On one of the the other sites I think it was DTR someone just posted about getting the lift pump replaced which didn't solve the problem they then replaced the vp and it solved the problem but there were no codes of any type. Mechanic said he had seen that before. Mine had the 0216 many times but never set the mil off which according to the manual it should have done. Could also be coincidence and you have more than one problem.

 

[GiesJ]

Tim - the cutting out and then no response you describe has happend to me on several of my VP funerals. (I'm on my 4th now, knock on wood. )

Good luck,

Jason

 

[ToolManTimTaylor]

Oh god I think I am going to barf. I had a hunch but you guys are confirming it.

Barry Thats my whole issue is why all the trans codes and no VP codes? Weird.



Jason, *gulp* I uhh didn't wannah hear that.

 

[ToolManTimTaylor]

BTW if the APPS voltage drops out will that set a code? Scott up at MassDiesel was gracious to give me a test proceedure to do when I get home and I would love to see that be bad apple(Apps are like what $230. 00 Vs 1200. 00).

 

[Oil Burner]

TMTT,

I rode with my buddy in his 01. 5 as we were trying to diagnose a problem. It cut out under throttle then came back to life just as you described and it turned out to be the injection pump I'm not saying that is what is wrong with yours. I have no idea what codes he recorded. I have never heard anyone mention the codes you are getting with a dying vp44, but there is a first for everything. Good luck.

-Jason

 

[GiesJ]

TMTT

hang in there buddy, I hope like heck we are all wrong. Keep us posted. hang onto your lunch!!!

jason

 

[Oil Burner]

good luck TMTT. the vp44 nightmare has woken me up many a night. hope that isn't your problem.

-J

 

[ToolManTimTaylor]

:{ :{ This Thread :{ :{ Seems to Mimic my issue *sniffle * BTW How do you perform the apps test?



.

 

[Batman]

Tim, check your pm's & call me tonight b 4 9

 

[ToolManTimTaylor]

OK. MR. toniteB49



Wait a Tic George LIVES!!!!!!!!!!!! This is great news!

 

[Batman]

Ha ha, try to help someone out and I get goofed on

BTW, I replied to the thread prior to sending out the PM, try now.

 

[ToolManTimTaylor]

O. K here is the scoop. Pulled the apps and took readings and found a pervect voltage swing from . 580 volts to 3. 8 ... No dropouts. Even held a 50% throttle position and again no voltage drop. Dielectric greased the joints and took her for a road test to duplicate what had happened on the trip to coffee nite (Which actually was WORSE than last night) Wouldn't you know it the truck seems to be running fine ..... even Mark comented about how hard the truck is pulling when we got on th hi~way. Odd he is right the truck has way more nut..... strange indeed. So we drove home and on the highway with the box on kill It pulled Brutaly (Even BLACKED OUT the entire highway) No stumbles no hesitations no cutouts ... . 5 back to back runs perfect running order. Man am I confused. I did however notice that my lights were pulsating the whole ride home (Odd) but whatever. Could I have A: Bad ground causing this whole scenerio? B: Just had a bad Apps connection and di electric fixed it? C: Calm before the storm?

 

[Batman]

Toolman, as odd as this may seem... ... ... ... . I've heard that sometimes your light switch could be causing this At least that's what the dealer told me to check if my APPS was fine. Something about the voltage being shorted out or something... ... ..... I'm obviously no electrical wiz.

It may be worth checking out, especially if your lights appear to be pulsating.

G



BTW, you never left your number on my work vm... ... ..... I couldn't return your call.