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  #1  
Old 11-19-2010, 01:34 PM
5.7L 5.7L is offline
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Default Transmission wont go into gear

Hey everyone, new guy here although ive been lurking for a while. Anyways I finally signed up because I finally have a problem with my Ram. Its a 2006 1500 with the 5.7L Hemi. Last night got pretty cold (around -20 degrees Celsius) and this morning my truck won't go into gear. It worked fine last night but now it won't engage drive or reverse although it will go into neutral and it still engages park. After trying over and over to get the tranny to go into gear the check engine light came on. Is this a common problem with these trucks? and do you guys have any idea what it could be? I did a search but didn't find anyone with the same problem. Any help you guys can give me would be much appreciated.
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Old 11-19-2010, 01:35 PM
erm
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Welcome to the forum. No, that is not normal.

Check your fluid level. Is the truck now warm? I'd get the transmission fluid and filter service done. Did you get the code read? If so, what was it?
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Old 11-19-2010, 01:39 PM
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Yeah I let the truck warm up and it still wouldn't shift. I won't be able to get a code read till after the weekend. I am at work today unfortunately. I also had my oil changed and transfer case serviced yesterday. I don't suppose that could have anything to do with it?
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Old 11-19-2010, 01:45 PM
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Nope. Neither one would have anything to do with it. Warming up the engine still doesn't warm the fluid so the fluid temp may be an issue.
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Old 11-19-2010, 01:52 PM
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So how does the fluid temp raise, Randy? If it raises due to operation, and it won't operate, what is the root cause of this? Fluid level?
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Old 11-19-2010, 02:12 PM
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Could be moisture in the fluid or restricted filters. It's also possible that this truck may be one of the ones that had defective cooler return filters.
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Old 11-19-2010, 02:15 PM
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ahhh...so getting enough fluid to the right places is the issue.

Thanks for that, Randy!
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Old 11-19-2010, 03:45 PM
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Thanks for the info guys. I will let you know what I figure out.
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Old 11-23-2010, 12:29 AM
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OK gang, also a newbie here. I bought a used 06 Ram about 2 months ago. Not having any history on the truck, the first thing I did was change all the fluid and filters. The truck has worked flawlessly until this morning.

Exact same problem as this poster. Up until yesterday, everything was good. This morning was extremely cold...-34 with the wind chill. It was not plugged in and started right away. Letting it warm up for about 20 mins, the wife gets in, puts it in D...and nothing. I come out and check the fliuds. All topped up and look/smell right. I run to the shop to get my OBDII reader, low and behold...when I return. The check engine light is also on.

OBDII codes are;

P0700 & P0841

Can anyone help a fella out. I do most of my own wrenching, but this one has me !!!
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Old 11-23-2010, 12:55 AM
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I found this with Google

P0700 What does this code actually mean ? P0841 ?
--------------------------------------------------------------------------------
P0700 is a generic TCM malfunction code.
It means that something is wrong with your transmission control module. Not enough to pinpoint a specific circuit or sensor, but it is still serious, especially if you noticed slippage.

at another site i found this

Ignore the P0700, it is just telling you that there is the P0841 fault.
Unfortunately, the problem isn't as easy as just diagnosing it.
I would recommend getting the AlldataDIY subscription for your truck.
It will give you the fault code diagnostics, with diagrams.
But a scanner will be needed that will access the transmission parameters.
You might call a local shop and see if they can diagnose the problem.
Sorry, but there isn't a lot of options,

P0700-TRANSMISSION CONTROL SYSTEM (MIL REQUEST)
WHEN MONITORED
Ignition on and battery voltage greater than 10 volts .
SET CONDITION
An active DTC is stored in the TCM. One Trip Fault. Three good trips to turn off the MIL.
POSSIBLE CAUSES
DTC present in the transmission control module

P0841-LR PRESSURE SWITCH RATIONALITY
Possible Causes
LOSS OF PRIME AND/OR TRANSMISSION CONTROL RELAY DTC PRESENT
LOW FLUID LEVEL
LOW LINE PRESSURE
REVERSE CARRIER SNAP RING DISLODGED
CRACKED OR MIS-INSTALLED PRIMARY OIL FILTER OR FILTER SEAL
STICKING MAIN REGULATOR VALVE IN PUMP VALVE BODY
NO. 1 CHECK BALL CUT OR DAMAGED
WIRING AND CONNECTORS
(T50) LR PRESSURE SWITCH SENSE CIRCUIT OPEN
(T50) LR PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND
(T50) LR PRESSURE SWITCH SENSE CIRCUIT SHORT TO VOLTAGE
TRANSMISSION SOLENOID/TRS ASSEMBLY
POWERTRAIN CONTROL MODULE

good luck finding the fix & i hope that you are back on the road again soon
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