e4od wiring
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Senior User
Joined: Apr 2011
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ok,im having one issue with my transmission. the truck will shift into all the gears but it will not shift unless the gas pedal is floored.anybody have any ideas it feels like the motor will blow before it shifts.it does not shift hard just very late
Fleet Owner
Joined: Oct 2005
Posts: 20,784
Likes: 1,751
From: Kentucky
Just because it is new does not mean anything other than your wallet is lighter. Check the output with a meter. Turn the key to the On/Run position then measure the closed throttle value. Slowly open the throttle to verify the output is linear to ~5.00 VDC (VREF).
For reference: Fuel Injection Technical Library » Throttle Position Sensor (TPS)
For reference: Fuel Injection Technical Library » Throttle Position Sensor (TPS)
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Senior User
Joined: Apr 2011
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ok i tested the tps and it was fine. i tried aligning the gear selector in neutral and it was perfectly lined up so i tried swapping the 97s gear selector and it still wont shift and i checked the vss.my last truck was a 86 diesel with the c6 and u could adjust the vss to move your shoft points can u do that with the e4od? could the replacement tranny be shot
Fleet Owner
Joined: Aug 2005
Posts: 23,666
Likes: 301
From: Easton,Ks
I think you are saying that you replaced the TR sensor on the side of the transmission.
Right?
There are no adjustments on the truck for the VSS.
The VSS is mounted on the center of the rear axle and just goes in with a bolt holding it in.
The TR sensor:
The VSS:
The TPS:
/
Right?
The VSS is mounted on the center of the rear axle and just goes in with a bolt holding it in.
The TR sensor:
The VSS:
The TPS:
/
Lead Driver
Joined: Jul 2007
Posts: 7,868
Likes: 9
From: Rhode Island
E4OD isn't the problem, it's a computer issue at this point. Have you tried pulling the codes?
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Senior User
Joined: Apr 2011
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i pulled codes tonight and the only one i coul tell was code 121 i believe it has to do with the tps sensor. i was thinking about going and getting a 97 shift solenoid and installing the 97s plug
Lead Driver
Joined: Jul 2007
Posts: 7,868
Likes: 9
From: Rhode Island
Once again, the problem has nothing to do with the solenoid pack or your transmission. If its shifting through all the gears, its electrically fine.
The problem is the computer thinks you're wide open throttle, and the fact that you're still getting a TPS code confirms this.
The problem is the computer thinks you're wide open throttle, and the fact that you're still getting a TPS code confirms this.
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Senior User
Joined: Apr 2011
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thank you very much for all the helpful information i returned my tps sensor and bought a better one installed it and i cant even tell the truck is shifting its so smooth. in use to all mechanical motors this 97 is the newest truck i ever owned and thanks again great forum and people
Fleet Owner
Joined: Oct 2005
Posts: 20,784
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From: Kentucky
I would not suggest you try it.
Fleet Owner
Joined: Aug 2005
Posts: 23,666
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From: Easton,Ks
They are damper diodes to stop ringing in the solenoid coils. A ringing coil will make the valve shutter and its oil flow would pulse as you will not get a positive off and on from the valve. With out the diodes you could also cause a high voltage spike and take out something in the PCM Computer. The coils might be acting like an Ignition coil also.
Laughing Gas
Joined: Mar 2011
Posts: 811
Likes: 1
From: West Central Southern MN
Possible to solder in diodes in the older PCM?(sounds unlikely)
Swap a pre '95 solenoid pack and harness?
I am wondering because I am doing a MAF swap on my '97 and can't find a post '95 MAF computer for the swap.
Also I have a punisher valve body and a 12" Circle D converter in my E4OD.
Swap a pre '95 solenoid pack and harness?
I am wondering because I am doing a MAF swap on my '97 and can't find a post '95 MAF computer for the swap.
Also I have a punisher valve body and a 12" Circle D converter in my E4OD.