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  #1  
Old 01-03-2016, 05:20 PM
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Transmission and Steering??

The steering is making a lot of noise and it won't shift out of 1st... Not sure if they are connected, doesn't seem likely. Engine gives the transmission code p0700. Any help will be great.

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Old 01-03-2016, 05:25 PM
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Re: Transmission and Steering??

Also, I'm going to check the power steering fluid tomorrow in the light. I'm guessing it's not that.
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  #3  
Old 01-03-2016, 06:07 PM
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Re: Transmission and Steering??

O wait, you are the same one with the dying engine?
To know what transmission fault is stored, it need to be put on a scanner. With the code we will know more.
It can be that the dying engine and the transmission fault are related. A faulty crank position sensor for example can cause the engine to die and cause transmission problems. Which engine/transmission you have?
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Old 01-03-2016, 06:31 PM
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Re: Transmission and Steering??

Quote:
Originally Posted by Frango100 View Post
O wait, you are the same one with the dying engine?
To know what transmission fault is stored, it need to be put on a scanner. With the code we will know more.
It can be that the dying engine and the transmission fault are related. A faulty crank position sensor for example can cause the engine to die and cause transmission problems. Which engine/transmission you have?

5.7 quadra drive 2
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Old 01-03-2016, 07:39 PM
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Re: Transmission and Steering??

P0869
P0733
P0734
P0700
These are the codes that came up when I had the transmission read.
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Old 01-04-2016, 10:14 PM
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Re: Transmission and Steering??

Your jeep has the 5-45RFE transmission. This transmission is electronically controlled by the TCM part of the PCM. Line pressure is constantly monitored and regulated, depending on which gear. The P0869 code means that the line pressure is regulated too high compared to the schedule. There is a line pressure sensor on the right hand side of the transmission housing. It can be that the sensor is reading a higher pressure then it actually is. You can remove the connector from this sensor and test drive. Without the feedback signal from the pressure sensor, the pressure regulating solenoid will be put in a fixed position and a constant line pressure will be regulated. There can be a fault with the pressure regulating solenoid as well. Its part of the solenoid block and can´t be changed separately.
The P0733 and P0734 are gear ratio codes. The ratio between input speed and output speed (which should be a fixed figure for a certain gear), is not in its range. This normally means a slipping clutch. P0733 is for 3rd gear and P0734 for 4th gear. Did you check the transmission fluid level and color/smell? Fresh fluid is light red in color (ATF+4), but can change a bit to a light brownish over time, but there should be no burnt smell to the fluid. The fluid will burn due to the friction of slipping clutches.
So lets first see how the fluid look like before going any further.
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Old 01-04-2016, 10:50 PM
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Re: Transmission and Steering??

Quote:
Originally Posted by Frango100 View Post
Your jeep has the 5-45RFE transmission. This transmission is electronically controlled by the TCM part of the PCM. Line pressure is constantly monitored and regulated, depending on which gear. The P0869 code means that the line pressure is regulated too high compared to the schedule. There is a line pressure sensor on the right hand side of the transmission housing. It can be that the sensor is reading a higher pressure then it actually is. You can remove the connector from this sensor and test drive. Without the feedback signal from the pressure sensor, the pressure regulating solenoid will be put in a fixed position and a constant line pressure will be regulated. There can be a fault with the pressure regulating solenoid as well. Its part of the solenoid block and can´t be changed separately.
The P0733 and P0734 are gear ratio codes. The ratio between input speed and output speed (which should be a fixed figure for a certain gear), is not in its range. This normally means a slipping clutch. P0733 is for 3rd gear and P0734 for 4th gear. Did you check the transmission fluid level and color/smell? Fresh fluid is light red in color (ATF+4), but can change a bit to a light brownish over time, but there should be no burnt smell to the fluid. The fluid will burn due to the friction of slipping clutches.
So lets first see how the fluid look like before going any further.

I figured out what all the codes were. Smelled the fluid(burnt). I don't have time to mess with all of that at this time so I took it to a repair shop to see what they can figure out. Thank you for all the help.
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Old 01-05-2016, 04:51 PM
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Re: Transmission and Steering??

The repair shop is quoting me 2100 for a rebuild of the transmission, and 1400 for the steering. New pump and rack and pinion. They aren't sure it will have to be a rebuild until they open it up.
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Old 01-05-2016, 05:11 PM
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Re: Transmission and Steering??

When the fluid is burnt, at least one clutch pack needs to be changed. If its open, then better to change all the clutches. Ofcourse also need to know why it started slipping in the first place. Most probably the overdrive clutch is the problem, since the slipping occured in 3rd and 4th gear. I could be wise to change the TRS/solenoid block and the line pressure sensor as well, due to the P0869 code. A faulty line pressure sensor can result in a too low line pressure (while it still senses a high pressure), with low holding forces of the clutches and slipping as a result.
How many miles on the jeep?
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Old 01-05-2016, 06:08 PM
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Re: Transmission and Steering??

Quote:
Originally Posted by Frango100 View Post
When the fluid is burnt, at least one clutch pack needs to be changed. If its open, then better to change all the clutches. Ofcourse also need to know why it started slipping in the first place. Most probably the overdrive clutch is the problem, since the slipping occured in 3rd and 4th gear. I could be wise to change the TRS/solenoid block and the line pressure sensor as well, due to the P0869 code. A faulty line pressure sensor can result in a too low line pressure (while it still senses a high pressure), with low holding forces of the clutches and slipping as a result.
How many miles on the jeep?

109k
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Old 01-05-2016, 08:20 PM
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Re: Transmission and Steering??

Any suggestions on helpful mods to do while the tranny is out?
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Old 01-05-2016, 09:57 PM
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Re: Transmission and Steering??

A shiftkit from Transgo is a well known upgrade. A part of the kit can be installed with the transmission in place, what many do, but to install the complete kit, the transmission must be out. The kit makes the shifts firmer and quicker and you will feel the shifts more than before. The advantage is less wear and less heat buildup due to the quicker shifts. (the overlap time, the time that two clutches with different speeds are pressurized together, will be reduced, causing the reduction in temperature and wear).Also the line pressure will be increased by around 15 psi, which gives more holding power to the clutches, reducing the possibility to slip.
The torque converter most probably already will be changed, since its practically impossible to clean the interior. Also, the torque converter clutch most probably will be worn quite a bit already (depending on how the jeep was used, a lot of constant speed highway trips will mean less wear) and would be wise to change as well.
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