Wow, nothing guys? Might have to scrap the 94. 
Looking for Solenoid Pack: Mopar #4539766
About a month ago, my 94 started randomly going into limp mode. I had a local transmission shop retrieve codes from the TCM using a MT-2500 scan tool and two codes are currently stored in the TCM: 38 and 42 (42 according to the FSM causes the TCM to enter limp mode when it detects a fault with the 2/4 solenoid).
The transmission is the original factory unit and is in otherwise good shape for the age (I never had any problems with it up until last month in the 10+ years I've owned the car) and there's no other visible faults with it (wiring is good, fluid is good, etc).
Just like the RFI module, Chrysler no longer carries the solenoid pack for the 42LE/A606 (even filters are starting to become a problem; guess who's been using them up over the years). Aftermarket has nothing either, and the transmission shop I'm dealing with is having a hard time finding a solenoid pack through their own suppliers. Also, these solenoid packs can't be rebuilt (at least according to the trans shop).
The car is drivable, but it's becoming a PITA turning off the car and restarting it in the middle of traffic to get out of limp mode. Highway driving is out of the question.
Does anyone have a working Mopar solenoid pack lying around somewhere? Car-Part.com does not list the solenoid pack as a separate unit and there's only two complete 1st gen transmissions listed in Ontario (and I know the first yard listed doesn't have it because they never update their inventory).
I asked in another thread, but did the the #4539766 part number carry on into the 2nd gen? Was the solenoid pack the same throughout the whole LH run (93-04)?
The transmission is the original factory unit and is in otherwise good shape for the age (I never had any problems with it up until last month in the 10+ years I've owned the car) and there's no other visible faults with it (wiring is good, fluid is good, etc).
Just like the RFI module, Chrysler no longer carries the solenoid pack for the 42LE/A606 (even filters are starting to become a problem; guess who's been using them up over the years
). Aftermarket has nothing either, and the transmission shop I'm dealing with is having a hard time finding a solenoid pack through their own suppliers. Also, these solenoid packs can't be rebuilt (at least according to the trans shop). The car is drivable, but it's becoming a PITA turning off the car and restarting it in the middle of traffic to get out of limp mode. Highway driving is out of the question.
Does anyone have a working Mopar solenoid pack lying around somewhere? Car-Part.com does not list the solenoid pack as a separate unit and there's only two complete 1st gen transmissions listed in Ontario (and I know the first yard listed doesn't have it because they never update their inventory).
I asked in another thread, but did the the #4539766 part number carry on into the 2nd gen? Was the solenoid pack the same throughout the whole LH run (93-04)?
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Leaning towards this unit here:
![Product Font Motor vehicle Automotive lighting Screenshot]()
The seller advised me that these are third-party rebuilt solenoid packs and that it is not a genuine Mopar rebuild despite being listed as a OEM Mopar solenoid pack and showing the Mopar casting with the part number in the pic.
I've asked if the seller knows who the supplier is for these remans. Still waiting on that. They are offering a one-year warranty.
Seems that no one carries any new Mopar solenoid packs or official Mopar remans for the 42LE/A606.
The seller advised me that these are third-party rebuilt solenoid packs and that it is not a genuine Mopar rebuild despite being listed as a OEM Mopar solenoid pack and showing the Mopar casting with the part number in the pic.
I've asked if the seller knows who the supplier is for these remans. Still waiting on that. They are offering a one-year warranty.
Seems that no one carries any new Mopar solenoid packs or official Mopar remans for the 42LE/A606.
That's not entirely true. If Chrysler had supplied the solenoid pack I would have been given a two year warranty - regardless of who installs the part. The trans shop that has an aftermarket solenoid pack in stock is offering 6 months warranty - but I was advised by the shop owner to steer clear of aftermarket solenoid packs based on their prior experience working on the 42LE.
eBay, etc. is a PITA when it comes to warranties and that's why I don't really care for online shopping when it comes to big-item automotive parts.
Well considering that the average hourly labor rate for mechanics is about $120-140/hr in the Greater Toronto Area, that's not a bad price (some independent shops run around $90/hr for labor). Of course, Canada is far more expensive when it comes to automotive repair than 'Murica, amongst other things.
Saw that. They currently want $300.75 Canadian for it + shipping. Not happening for an aftermarket part (they also have a Rostra one advertised as well and they're asking $474.53!
)I wonder why this one didn't show on eBay.ca. I'll throw in a best offer and see what happens (although the exchange rate between US and CDN will be killer).
MOPAR 1RL539766 AUTO TRANS CONTROL SOLENOID NOS NEW MOPAR 4539749 | eBay
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Went ahead and removed the original factory TCM from my 94. Upon initial inspection, I discovered that the casing for one of the capacitors came off leaving the capacitor completely unshielded (I could hear something rattle inside the TCM housing). Not sure if that's enough for the TCM to constantly trigger a Code 42 and leave the trans in limp mode.
There's not much else that can be visually inspected inside the TCM since Chrysler used a weird sort of jello-like material to protect the TCM's electrical components. Doesn't look like this gooey substance wants to come off either. I guess they didn't want mechanics/enthusiasts to attempt to recap these units.
I've got a replacement TCM on hand and will be installing that shortly. The part number is slightly different (came from a 95 Intrepid) but all the chips on the logic board seem to be the same. No rattling noises in that one, although I did run into a problem with one of the T-20 torx screws shearing off from its head. Now there's part of the bolt stuck inside one of the threads. I tried hammering it out with no success. Is there another alternative to drilling? Don't really want to damage the thread.
Anyway, pics:
![Gas Auto part Technology Machine Engineering]()
Original factory TCM unit from 1994 (Part #4759066)
![Font Gas Auto part Machine Wood]()
Capacitor carnage inside the 94 TCM
![Gas Auto part Metal Bumper Tool]()
Replacement TCM unit from a 95 Intrepid (notice different part number #4606109)
![Wood Gas Screw Auto part Automotive exterior]()
Capacitors appear OK in the 95 unit
![Automotive tire Automotive exterior Bumper Wood Gas]()
60-pin connector. Doesn't appear to have any corrosion and severed wires. Is there anything else to look for with these?
![Automotive tire Electrical wiring Motor vehicle Bumper Gas]()
![Light Wood Gas Motor vehicle Font]()
Remnants of T-20 bolt that broke off on the 95 unit.
There's not much else that can be visually inspected inside the TCM since Chrysler used a weird sort of jello-like material to protect the TCM's electrical components. Doesn't look like this gooey substance wants to come off either. I guess they didn't want mechanics/enthusiasts to attempt to recap these units.
I've got a replacement TCM on hand and will be installing that shortly. The part number is slightly different (came from a 95 Intrepid) but all the chips on the logic board seem to be the same. No rattling noises in that one, although I did run into a problem with one of the T-20 torx screws shearing off from its head. Now there's part of the bolt stuck inside one of the threads. I tried hammering it out with no success. Is there another alternative to drilling? Don't really want to damage the thread.
Anyway, pics:
Original factory TCM unit from 1994 (Part #4759066)
Capacitor carnage inside the 94 TCM
Replacement TCM unit from a 95 Intrepid (notice different part number #4606109)
Capacitors appear OK in the 95 unit
60-pin connector. Doesn't appear to have any corrosion and severed wires. Is there anything else to look for with these?
Remnants of T-20 bolt that broke off on the 95 unit.
Installed the "new" TCM from the 95 Intrepid. Took the car for a long drive through the city and on the highway in light traffic. No limp mode thus far. However, the Code 38 returned, which is an error involving the torque converter, so my nearly three decades old transmission is showing some wear (fortunately the 38 error does not force the trans into limp mode unlike Code 42).
![Rectangle Font Wood Technology Gas]()
One noticeable thing - the Mopar solenoid pack I got from eBay is far more quieter than the original 94 factory unit. I can hardly hear the trademark Chrysler Buzz-Tic noise when coming to a stop or selecting a gear in idle. Too bad - I like that sound. It's as distinctive as the Chrysler "Hummingbird" starter sound.
One noticeable thing - the Mopar solenoid pack I got from eBay is far more quieter than the original 94 factory unit. I can hardly hear the trademark Chrysler Buzz-Tic noise when coming to a stop or selecting a gear in idle. Too bad - I like that sound. It's as distinctive as the Chrysler "Hummingbird" starter sound.
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