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Transmission will not shift - P0753 code

Tiny
SHAMANBMXER
  • MEMBER
  • 1997 DODGE RAM
My truck is a V8 four wheel drive with an automatic transmission. Where is the shift solenoid relay located? The truck will not shift into fourth nor first gear. Only has second and third. The code it is throwing is p0753 and the mechanic that pulled the code said the computer said shift solenoid relay which I have found out is aka the governor solenoid. A tech at Aamco transmissions told me the same today. And also said he thinks it is in the transmission pan. Thank you.
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Tuesday, March 30th, 2010 AT 6:55 PM

11 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Yes, P0753 is an open or short in governor solenoid/relay. See diagram it is located on valve body. Check wiring and connector for corrosion at the connector.
.


https://www.2carpros.com/forum/automotive_pictures/198357_Graphic_427.jpg



You will need to drop the pan as well.

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

There is also a transmission control relay that can cause the transmission not to work right.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Here is a transmission wiring diagram to help you see what you are doing.

Please let us know what you find.

Cheers
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Friday, April 2nd, 2010 AT 1:50 PM
Tiny
SHAMANBMXER
  • MEMBER
  • 4 POSTS
Well I replaced the governor solenoid, relay and filter while I was there and not only did it not fix the problem, but now it seems worse. The truck now can barley make it up the slight slope of my driveway. Now I really do not know what to do. Thank for the information on the solenoid.
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Monday, April 5th, 2010 AT 10:44 AM
Tiny
2 LINSEY
  • MECHANIC
  • 287 POSTS
Hi shamanbmxer, I just wanted to see where you were with your Dodge, did you resolve your transmission issue? Let us know.
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Friday, April 9th, 2010 AT 11:43 AM
Tiny
SHAMANBMXER
  • MEMBER
  • 4 POSTS
No I have not, it is still sitting in my driveway. After replacing the governor solenoid and filter and new fluid to replace what was in the pan it got worse not better. Now the truck will barely move and I think I need to have the transmission rebuilt.
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Friday, April 9th, 2010 AT 5:22 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Was there clutch material in the pan, dark pieces or sludge? Any bronze or silver particles in pan? Check brown wire on solenoid plug for voltage, the fuse might be blown.
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Monday, April 12th, 2010 AT 9:56 AM
Tiny
SHAMANBMXER
  • MEMBER
  • 4 POSTS
There was quite a bit of sludge in the pan and the transmission fluid was very dark with like silver floating on top.
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Wednesday, April 14th, 2010 AT 3:25 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Okay, it sounds like you need a rebuild.
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Thursday, April 15th, 2010 AT 7:58 AM
Tiny
1999DODGERAMIN
  • MEMBER
  • 1 POST
Hello I have the exact same problem with my 1999 Dodge Ram 1500 5.2 only I have no sludge nor shavings whatsoever in the pan and fluid is great color. I checked brown wire and have no power ( key off, key on, and key on truck in drive). I am stumped it seems as though the transmission relay is good. I am lost as to where to hit next. Please help.
Thank you. 1999ramin
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Friday, June 14th, 2013 AT 10:58 PM
Tiny
EL NAYARITA
  • MEMBER
  • 1 POST
I have a question. Recently my 1997 Ram 5.2 is not shifting good. It takes off well but it takes a while for it to go into second gear like it goes into high rpm's and will not shift. I let of the gas and it shifts into second then there are times when it shifts into second then first then second again. Can it be my solenoids it something? Thanks
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Wednesday, June 29th, 2016 AT 4:22 PM
Tiny
CRYSTAL GALVAN
  • MEMBER
  • 2 POSTS
I have an automatic 2001 Dodge Ram 1500 5.9 4 wheel drive. I just changed my transmission filter and oil. When I went to drive it changes into gears but when it comes to driving the it does not shift. What can be the problem?
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Thursday, June 8th, 2017 AT 7:42 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,256 POSTS
Hello,

It sounds like you have a shift solenoid that has gone out. Here is a transmission wiring diagram so you can do some testing. Check each solenoid to see if one is way different that will be the bad one.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

You also have some fuses and a relay that need to be checked as well

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Please run some tests and get back to us so we can continue helping you.

Cheers, Ken

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Monday, June 12th, 2017 AT 2:12 PM

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