1997 Dodge 3500 conversion van

Tiny
JGIRGENTI
  • MEMBER
  • 1997 DODGE VAN
  • V8
  • 2WD
  • AUTOMATIC
  • 133,000 MILES
Transmission statrted to slip. Added fluid was a little low. Today its slipping then all of a sudden it wont move in any gear. Going to get trouble codes for truck. What codes are for this problem I heard of involving the pressure regulator and or solenoids 1-2 3-4
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Friday, January 21st, 2011 AT 9:14 PM

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Tiny
CARADIODOC
  • EXPERT
Normally codes are for things that aren't working such as solenoids, or they're for pressure-related problems or the pressure sensors.

I'm pretty sure you don't have a computer-controlled transmission in a '97 model. You should have a version of the really tough 727 automatic with an overdrive assembly in the tail housing. When slippage takes place in the computerized transmissions, they default to second gear and stay there until you cycle the ignition switch off and restart the engine. That's "limp-in mode" which lets you drive it slowly to a repair shop.

Did you check the fluid level with the engine running? If not, it may still be low.

Caradiodoc
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Friday, January 21st, 2011 AT 10:06 PM
Tiny
JGIRGENTI
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I called a local trans shop and he suggested the code search from a scanner. Tha results are p1757 transmission control.P0783 3-4 shift malfunction. P0783 p1764
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Friday, January 21st, 2011 AT 10:12 PM
Tiny
JGIRGENTI
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Transmission makes a whining sound when cold and I first try to back up
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Friday, January 21st, 2011 AT 10:23 PM
Tiny
CARADIODOC
  • EXPERT
Whining or whistling is typical of the front pump sucking up air instead of fluid. The pitch will increase with an increase in engine speed. Was the engine running when you checked the fluid level?

There are some mechanical things that can cause no or sluggish reverse, but they shouldn't be related to temperature. One simple thing to not overlook is the kick-down cable. The diagnostic charts make repeated reference to its adjustment but in the '90s, there was a lot of trouble caused by that cable sticking. It usually caused delayed up-shifts and early downshifts but check it for free movement anyway.

I would disregard code 783 for now. It could be set as a result not shifting properly due to low governor pressure. Your transmission doesn't use shift solenoids and a Transmission Computer like the front-wheel-drive cars and minivans. The torque converter lockup clutch is controlled by the Engine Computer just like they did since the mid '80s. What is different though is the governor valve is computer-controlled instead of mechanically-controlled on the tail shaft. That's how they can detect fault codes related to that circuit. Codes 1757 and 1764 both refer to the voltage being too low. Given that, you might suspect a problem with the governor solenoid or pressure sensor. Start by checking the pins in the electrical connector. There's also a transmission control relay. Just to be safe, swap it with a different one like it.

Caradiodoc
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Saturday, January 22nd, 2011 AT 12:38 AM

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