Common symptoms of bad solenoid pack?



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Thread: Common symptoms of bad solenoid pack?

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    Question Common symptoms of bad solenoid pack?

    What are symptoms of a failing or worn/gummed up solenoid packs? Or common ones should I say. Anything in particular? ex:delayed/hesitant upshifts, shuddering, etc. I think this would be a good thread to start so people that believe their solenoid pack may be the culprit of their tranny problems can come and read about common problems and issues with them when they are failing or gummy on the inside. Any suggestions or thoughts are much appreciated.

    2001 Infiniti i30 3.0 DOHC V6: VQ30DE 177,000 miles; 1999 Nissan Altima GLE KA24 168,000 Miles
    1997 Dodge Ram 1500 SLT Laramie 5.9 46RE, 182,000 Miles
    Prev. 97 T&C LXi 184k 3.8, 94 T&C 3.8 156k Miles, 93 GV LE 3.3 123k

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    You will get a check engine light and 2 codes: one will be P0700, transmission controller and one other, can't remember number, which indicates a solenoid valve not responding to command from the transmission controller.

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    Why are so many solenoid packs being replaced? They seem to be blamed frequently for leaks, and get replaced because of that. Otherwise maybe they are often replaced needlessly.
    I checked under my van today after a 1 hour trip and no leak. Ambient temperature was +4 C. If the temperature were -4C, there would be a slight leak during cool down. During the Winter I lose 0.5 to 1.0 liter due to this leak, no loss during the Summer. Go figure. Transmission works fine and no codes are showing up.
    2007 GC SXT - Magnesium - S&G - 3.8L - 115,600 kms
    2002 GC Sport - Stone White - 3.3L - 314,240 kms
    2003 Jeep TJ Sport - 4.0L - 246,430 kms

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    Quote Originally Posted by Vision67 View Post
    You will get a check engine light and 2 codes: one will be P0700, transmission controller and one other, can't remember number, which indicates a solenoid valve not responding to command from the transmission controller.
    P1776 Solenoid Latched in L/R position.

    That's the solenoid code I have had before.
    Candy the van. '98 Sport 3.8L 132,200 miles. Used trans at ~96k. Great piece of my life and a fine van.

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    Of all the boards I've been checking on chrysler products i seems that more people on here toss a solenoid pack at every problem. In the service manual, it says how to test the solenoids using a multimeter and to use some pressure gauges. I checked with a couple reputable transmission shops and my local dodge dealer and they all say the the solenoids pack are rarely a failure. Most agree the most common problem is differential pin failure in the first few years of these generation 3 vans. They all say that planet failures are really common especially when the transmission is flushed the wrong way and any junk in the cooler ends up blocking off the planet circuits. But from what I have found out, it's not really a common problem for the solenoids to go bad. Looking even deeper into the design of the solenoids, they are nothing more than a coil of wire that makes a metal arm move to open or close a needle valve. Seems pretty simple and I would think easy to test and diagnose. Did you know, according the the shop manuals, you can make the solenoids engage with a scanner and using a pressure gauge you can see if its working?

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    Well I wasn't trying to spark up this, I was just trying see what can go wrong with them and what symptoms show up.
    2001 Infiniti i30 3.0 DOHC V6: VQ30DE 177,000 miles; 1999 Nissan Altima GLE KA24 168,000 Miles
    1997 Dodge Ram 1500 SLT Laramie 5.9 46RE, 182,000 Miles
    Prev. 97 T&C LXi 184k 3.8, 94 T&C 3.8 156k Miles, 93 GV LE 3.3 123k

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    I see that if in the rare occasion they fail the trans just dont shift at all. According to the transmission specialists they say theres some things that have gone wrong like a bad magnetic coil winding, a failed diode and that's about it. They told me that if there's a solenoid problem it's like 99% wiring or computer problems. I'm only able to recite what I was told for what it's worth.

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    Quote Originally Posted by andyg View Post
    P1776 Solenoid Latched in L/R position.

    That's the solenoid code I have had before.
    That's it.

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    I've read about the passages and screens in them getting gummed up. I'm guessing this would cause a restriction and cause a delayed shift or shudder or etc.
    2001 Infiniti i30 3.0 DOHC V6: VQ30DE 177,000 miles; 1999 Nissan Altima GLE KA24 168,000 Miles
    1997 Dodge Ram 1500 SLT Laramie 5.9 46RE, 182,000 Miles
    Prev. 97 T&C LXi 184k 3.8, 94 T&C 3.8 156k Miles, 93 GV LE 3.3 123k

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    I read thru the entire diagnostics for that code on Mitchell On-demand and it basically leads to a solenoid shift valve is sticking or not moving so I went to a trans web site and I see that valve is actually located in the valve body. There is no spring or anything on this valve. It looks like when the trans shifts to 2nd and higher the valve moves and the same solenoid that does L/R piston now controls torque converter lockup. Sure seems easy how it works now if I only knew how to fix them.

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