LOST JEEPS :: View topic - Second Solenoid Pack

I’ve got over 100k miles on my hd2 kit.
Never had any problems with the solenoid pack.

Exactly what errors are you getting?

I am finding:
P0755-2C SOLENOID CIRCUIT
P1736-GEAR RATIO ERROR IN 2ND PRIME
P1790-FAULT IMMEDIATELY AFTER SHIFT

I have read gear ratio faults typically mean slippage, but it is curious it is in 2 prime. we dont use 2 prime in our RFEs, do we?

k9adv wrote:

The 454RFE uses both "2nd" gears just like the 45RFE,one for normal upshifting(prime) and the other is for WOT downshifting only.

The only physical indication I'm getting is hard shifting from 2nd to 3rd and limp mode. It's intermittent as well, it goes away usually after it warms up and will go into 4th/5th.

Author:	Hexus [ Tue Aug 07, 2018 10:05 am ]
Post subject:	Second Solenoid Pack
I bought the last one from Cascade Transmission parts when the pack went out. That was at 158k Miles. Currently at 210k Miles. Now it's gone out, and I've ordered another one. It was about time for a Transmission service anyways, so 5 quarts of ATF4+ and a filter pack was ordered as well. I'm downgrading the HD-2 to the standard Transgo shift kit for that valve block, hoping that possibly the HD-2 was partly responsible for the reduced solenoid pack life. Wish me luck. Anyone else had issues like this?

Author:	k9adv [ Tue Aug 07, 2018 10:32 am ]
Post subject:	Re: Second Solenoid Pack
why would you suspect the HD2?

Author:	flash7210 [ Tue Aug 07, 2018 12:21 pm ]
Post subject:	Re: Second Solenoid Pack
I’ve got over 100k miles on my hd2 kit. Never had any problems with the solenoid pack.

Author:	k9adv [ Tue Aug 07, 2018 12:38 pm ]
Post subject:	Re: Second Solenoid Pack
flash7210 wrote: I’ve got over 100k miles on my hd2 kit. Never had any problems with the solenoid pack. I dont recall seeing anyone ever suggest a correlation other than the OP.

Author:	Hexus [ Tue Aug 07, 2018 12:56 pm ]
Post subject:	Re: Second Solenoid Pack
I suggest the correlation because the errors in the solenoid pack is in 1st and 2nd gears, and those are the specific changes made to the valve body with the HD-2 kit.

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Author:	flash7210 [ Tue Aug 07, 2018 1:08 pm ]
Post subject:	Re: Second Solenoid Pack
If I recall, all the accumulator springs get swapped out with the HD2 kit. Not just 1 and 2. Exactly what errors are you getting? Maybe something else is causing the problem.

Author:	k9adv [ Tue Aug 07, 2018 1:23 pm ]
Post subject:	Re: Second Solenoid Pack
Here is visual of what springs are swapped : http://liberty.eurekaboy.com/545rfeinstructions.pdf

Author:	k9adv [ Tue Aug 07, 2018 1:45 pm ]
Post subject:	Re: Second Solenoid Pack
flash7210 wrote: Exactly what errors are you getting? yes, i'd be interested to know exactly what errors. you havent said yet.

Author:	Hexus [ Wed Aug 08, 2018 8:37 am ]
Post subject:	Re: Second Solenoid Pack
Standard P0700 P0755 P1736 P1790

Author:	flash7210 [ Wed Aug 08, 2018 12:36 pm ]
Post subject:	Re: Second Solenoid Pack
All those codes point to 2nd gear. So, how well does it shift? Does it immediately go into limp mode? Are you able to shift it manually 1-2-D ? To me it seems like solenoid pack unless it’s shift into 2nd is either hard or unable to hold the gear or is slipping. The 2nd gear clutch is also used for ——. So you should notice a problem with —— Edit- it’s 5th gear that uses the 2nd gear clutch

Author:	k9adv [ Wed Aug 08, 2018 9:21 pm ]
Post subject:	Re: Second Solenoid Pack
I am finding: P0755-2C SOLENOID CIRCUIT P1736-GEAR RATIO ERROR IN 2ND PRIME P1790-FAULT IMMEDIATELY AFTER SHIFT I have read gear ratio faults typically mean slippage, but it is curious it is in 2 prime. we dont use 2 prime in our RFEs, do we?

Author:	tjkj2002 [ Wed Aug 08, 2018 9:28 pm ]
Post subject:	Re: Second Solenoid Pack
k9adv wrote: I am finding: P0755-2C SOLENOID CIRCUIT P1736-GEAR RATIO ERROR IN 2ND PRIME P1790-FAULT IMMEDIATELY AFTER SHIFT I have read gear ratio faults typically mean slippage, but it is curious it is in 2 prime. we dont use 2 prime in our RFEs, do we? The 454RFE uses both "2nd" gears just like the 45RFE,one for normal upshifting(prime) and the other is for WOT downshifting only.

Author:	k9adv [ Wed Aug 08, 2018 10:08 pm ]
Post subject:	Re: Second Solenoid Pack
thanks

Author:	flash7210 [ Thu Aug 09, 2018 7:34 am ]
Post subject:	Re: Second Solenoid Pack
tjkj2002 wrote: k9adv wrote: I am finding: P0755-2C SOLENOID CIRCUIT P1736-GEAR RATIO ERROR IN 2ND PRIME P1790-FAULT IMMEDIATELY AFTER SHIFT I have read gear ratio faults typically mean slippage, but it is curious it is in 2 prime. we dont use 2 prime in our RFEs, do we? The 454RFE uses both "2nd" gears just like the 45RFE,one for normal upshifting(prime) and the other is for WOT downshifting only. 2nd prime is rarely ever used. But because 2nd prime and 4th gear both use the 4C clutch, a problem with 4th gear would definitely be noticed.

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Author:	Hexus [ Fri Aug 10, 2018 5:45 am ]
Post subject:	Re: Second Solenoid Pack
The only physical indication I'm getting is hard shifting from 2nd to 3rd and limp mode. It's intermittent as well, it goes away usually after it warms up and will go into 4th/5th.

Author:	flash7210 [ Fri Aug 10, 2018 7:20 pm ]
Post subject:	Re: Second Solenoid Pack
Hexus wrote: The only physical indication I'm getting is hard shifting from 2nd to 3rd and limp mode. It's intermittent as well, it goes away usually after it warms up and will go into 4th/5th. Yup, seems like solenoid pack. Clutches and hydraulics seem to be ok.