Mechanics

SATURN SL2 BODY PROBLEM

1995 Saturn SL2 • 164,235 miles

95 saturn sl2 acts like dose not shift into 4th gear going down hy it just went to 3rd gear now when 4th shifts acts like netural then goes back to3rd
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Brainsurgen
November 28, 2012.



The code 15 is coolant temp sensor it sets because the computer sees a coolant temp reading of-35 degrees or less. So you may have a bad coolant temp sensor and or connector if the terminals on the inside of the connector are blue or green instead of silver you will need to replace the connector. Its the bottom sensor with two wires screwed into the head. Also the code 32 is for the egr valve most likely its carboned up and sticking. Remove it and clean the spring loaded pintle with carbon cleaner let it soak for atleast a half hr then clean it with carb cleaner. The code 24 is a no fourth gear code. Do you have a delay slam into reverse?


Saturntech9
Dec 4, 2012.
No delay or slam into reverse


Tiny
Brainsurgen
Dec 4, 2012.
I posted how you can check the actuators including the 4th gear one do it when it wont shift into 4th gear.


Saturntech9
Dec 4, 2012.
Acuators seem to sound propperly with on off click after 6 seconds.


Tiny
Brainsurgen
Dec 11, 2012.
The next thing I would do is a line pressure test which you need a transmission pressure tester to do that there under 60.I can recommend the one I have if you want which is under 60. After that I would remove the valve body and used compressed air to air check the clutches. You could have a leaking 4th gear clutch piston.


Saturntech9
Dec 11, 2012.
Repair with o ring in valve body or replace it


Tiny
Brainsurgen
Dec 11, 2012.
If there is a pressure issue then most likely your going to want to replace the valve body with one that has a sonnax upgrades. Alsoeven if there is a pressure issue your still. Going to. Want air check all the clutches including reverse piston servo.


Saturntech9
Dec 11, 2012.
Do you have a diagrahm of valve body and how to check pistons with air


Tiny
Brainsurgen
Dec 12, 2012.
You dont need a diagram of the valve body your not going to rebuild it. Also you need to do a pressure test on the transmission before you pull the valve body to air check the clutches.I will give you a diagram of which bolts to loosen but not take out to remove the valve body. But first we need to check the pressure itsa needed step I have seen low pressure in drive set codes for 4th gear.I know these transmissions I trained in spring hill Tennessee were they built them for factory training. Also spent over 16yrs working on them at the dealer.


Saturntech9
Dec 12, 2012.
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