Have you every ran into a solenoid pack leaking transmission fluid out of the area of the plug connection? After 24 years of trany work this is a first for me. As soon as the fluid gets into the connection, the transmission goes into limp in mode and sets code P0755 2/4 solenoid circuit error. Question I have is can a solenoid pack from a 96' be used to replace a 2000 pack? Any help is greatly appreciated. Thank you.
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Re: A604 solenoid pack interchangability
If I remember right the 2000 solenoid pack is slightly different than the '96. I've only seen that happen myself once. I just called my local bone yard and got a solenoid pack from the same year of trans. and did it that way.
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The factory uses silicone sealer on the transmission pans and this is rarely where the leak is, unless someone has tried to replace that gasket before.Most of the time the leak is where the rubber cooler hoses connect to the transmission and the fluid runs down the case behind the solenoid pack and across the front of bell housing and looks like the pan is leaking.Reverse and low gear are controlled by the same solenoid and share a set of clutches.Low fluid is the most likely cause of poor engagement but you could have a bad solenoid pack that could be also causing the leak and or internal damage to the transmission.I would double check the fluid and have diagnostic codes pulled and the CVI (clutch volume index)and get back to me with that info and i will try to give you an isea of what is wrong.
Your problem is most likely the Torque Converter Clutch (TCC) Solenoid valve. Check Fuse and Related wiring, if all looks OK, remove transmission pan to get to the TCC Solenoid.The solenoid packs are known to leak. You will need to remove:
The transmission cooling lines
the Speed Sensor,
the plug on the solenoid block,
the 3 tenmm bolts on the top of the Solenoid pack,
the solenoid pack,
old gasket (the new pack comes with new gasket)
The new Solenoid Pack,
the new gasket ,
the Speed Sensor and,
Transmission Cooling Lines
Start vehicle, check Transmission fluid level, check for proper shifting and have computer reset. Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa.
1. Dirty or clogged transmission filter 2. Low transmission fluid level 3. Faulty solenoid shift pack(Located in the valve body of the transmission) 4. Contaminated transmission fluid reserve.
I would advise to inspect the following areas above, asap. You can start
be simply having your transmission flushed and refilled with fresh
fluid and a new filter. In most cases, that will correct the hard shifting. If it doesn't; have the transmission solenoid pack inspected
by a competent ford tech or a local competent independent mechanic.
I take it you have a A604 Transmission?
The Fluid Level, Fluid Quality, Leak management and Transmission Filter are pretty much what you can immediately check and change. Is the Fluid Level correct?,,,checked while the engine is on? When was the last time the Fluid and Filter replaced last?
My 1994 I did the above and in 2001 ended up replacing a gear. I then had to change in 2002 the Transmission Solenoid, AND a year after that replaced the entire transmission (rebuild)
Start SMALL (fluid, filter, gasket) and work bigger (Solenoid about $300) and then to the transmission ($1,500-$2,300). I kept the new solenoid I bought for future use.
PS. The A604 has/had major problems lasting only 35K before additional problems. It has now 28-engineering changes. They also renamed it to the 41TE because the A604 was so bad and took on so many changes.
Good Luck and let me know if this worked, or if you had additional questions or information I can help you with at fixya.com!
There are actually 2 transmission speed sensors, both are located on the front of the transmission. The input speed sensor is located just above the electronic solenoid pack and just below the transmission cooler line connections. The output speed sensor is located at about the same level but 6 or 8 inches further to the right, closer to the drivers side tire, just left of the transmission side oil pan. I can't remember but I think the 2 sensors are different and will not interchange. If I remember correctly the input sensor is the one that typically went out most often. You'll have to jack up the vehicle to access the sensors from under the car. Make sure to use jack stands to support the car after you jack it up. You will not lose any fluid when you remove either sensor. Be careful there are is alot of wiring and hoses in the area and there is very little room to work.
You are probably running an A604 trans .That means the solenoid pack is bad not the trans. Disconnect the battery for about 10-30 minutes then reconnect the battery and start the car and drive it to see if it will shift. If yes then the solenoid pack is bad. If no then the fluid pressure is down in the pumps in the trans.
P.S. I assume you checked the obvious trans fluid level first off.
Yes, The soleniod pack is located on the outside of the transmission. There are a few bolts holding it on and a seal or o ring gasket behind it. The lines mght look corroded and rusted, but if they are not leaking then leave them alone. The inside of the line is just fine. You may borrowing trouble trying to replace them. The fitting and line could be brittle. You may have to purchase the solenoid pack from the dealer not sure. I would check you local auto parts store for the part first. Once the solenoid pack is replace, The tranmission might have to be reset to correct settings. The transmission can be reset by your local transmission shop. The transmission shop may do the repairs for a lot less then the dealer. I would inquire for an estiamate from your transmission shop just in case.
I would lean to a simple transmission leak inspect your transmission housing for leak when vehicle is in the air safely on jack stands and wheels off the ground and rear wheels chucked.... safety first! start by visually inspecting the transmission housing for noticable links then if none can be seen or theres soo much fluid you cant tell where its coming from clean the area with degreaser and then reinspect after cars been running and shifted through a few gears this can be doen while vehicle is still in air as long as its done safely! locate the leak and replace parts as needed could be from pan gasket or differential seals or from speed cable from top, the torque converter or even can leak from fill spout but not likely after you locate it replace part from local parts store or dealer or just have it done proffessionally but most selas can be replaced by knowledgable do it yourselfer! good luck and dont forget your rating!