48RE takes off in third. Intermittent issues. - Pirate4x4.Com : 4x4 and Off-Road Forum
 
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Old 07-17-2019, 02:00 PM   #1 (permalink)
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48RE takes off in third. Intermittent issues.

2004 Dodge 305/555 with 165k miles.

Supposedly, it's very intermittent and hard to replicate. Sometimes gets stuck in "2nd or 3rd". Or wont drop into reverse for awhile.

Fluid is fine. It may work fine for 2 weeks strait. Or it may act fucked up all day.

Governor? Transducer? I hate to just throw parts at something in effort to fix it. All I've ever done to a 48RE is adjust the bands and drive it.
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Last edited by Black Sheep; 07-17-2019 at 02:01 PM.
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Old 07-19-2019, 09:38 AM   #2 (permalink)
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Stuck in 3rd was limp mode for mine - wiring under the PDM was corroded. I'm not much of a wiring guy, so Dodge fixed that one for me. Trans shop wanted to replace the entire PDM at >$1k for the part alone. Patch wire to the trans control relay also got it out of limp mode.
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Old 07-19-2019, 10:37 AM   #3 (permalink)
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Check for codes or pending fualts and see what it tells you. When it starts in 2nd and only does the 2-3 shift that's Chrysler's limp mode. If you're towing etc and need first you can go from neutral to 1st and manually shift up from there.

A transducer, governor pressure solenoid or bad wiring will all cause it, plus I'm sure a lot more things but those are what I see the most.
A good scanner will let you see voltages and see what the solenoids are doing. I'd check for codes first to see if it narrows it down. If not drive it around with a scanner hooked up and watch what it's doing when it's going into limp mode.
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