1997 Dodge RAM 1500 Transmission issue

Hey,
I have a 1997 Dodge RAM 1500 that is experiencing shifting from overdrive to 3rd gear while driving at speeds over 50mph. It changes from overdrive to 3rd while minimal accerlation is occuring. Now, when
you give it more gas, it stops and acts normal. Also, while the cruise control is engaged, the problem does not occur. Any thoughts? I was thinking it could be a relay or board that is linked to the cruise control.
BTW, The transmission is NOT slipping. Please let me know if you have any ideas.
Jeff
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Does the truck have any diagnostic codes? Could be a TPS problem.
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Max

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No, there are no diagnostic codes. Funny thing, the cruise control was acting up during the incident. The next day, no problems at all and the cruise works perfect now. Also, the temperature change was dramatic, the day of the problem, the temp was 22-32F, the next day with no problems, 55-60F.
Thanks for the post!
Max Dodge wrote:

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Check your brake light switch. When the brake light switch is activated it will cancel your cruise and cause the torque converter to unlock.
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Ken



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Brake light is not active.
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Does not take much to activate the brake light switch to cancel the cruise control!

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Not sure on the model you have, but on the newer ones we have as service trucks and vans, there is a temp sensor that prevents the tranny from hitting OD below a set temp... Cant recall the temp setting, but it sounds normal to me.
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Mine was wierd like that when I had a shorted wire in the OD lock out button on shift stalk.

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hey, I have a 1997 Dodge RAM 1500 that is not shifting. It wouldn't go forward or backwards when you put it in gear.there was a hard jerk before it stop going. Any suggesting?
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BYLAS wrote:

Automatic? Check the fluid level.
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Ken



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Sounds like something's broke...
You have to give a little more info. than that.... auto or manual? 2WD or 4WD? Anything hanging down from underneath the truck (like a driveshaft?) What were you doing with/to the truck when it "jerked hard" and quit? Any symptoms leading up to this?
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