Valve body

Tiny
DRRICK INGRAHAM
  • MEMBER
  • 2002 SATURN
  • 1.9L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 139,000 MILES
Is an internal pressure solenoid the same as a purge valve? Is it, or are they, in the valve body? Are they easily replaced?
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Wednesday, February 1st, 2017 AT 10:05 AM

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Tiny
SATURNTECH9
  • EXPERT
A purge valve is for the evap system. Can you please give me the exact code numbers not code descriptions you have? Then we can go from there. I am the factory trained Saturn tech on here.
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Wednesday, February 1st, 2017 AT 12:43 PM
Tiny
DRRICK INGRAHAM
  • MEMBER
No codes, transmission shifts hard and slams into reverse and fuse is good. I was just going to buy a valve body, but if the Internal pressure solenoid is in the valve body. Is it something relatively easy to change once access has been gained to the valve body?
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Wednesday, February 1st, 2017 AT 12:57 PM
Tiny
SATURNTECH9
  • EXPERT
Here is what happens there is a lower valve body and a upper valve body that make up the valve body. The upper valve body contains the shift solenoid tcc solenoid line pressure solenoid etc. It also has the pressure regulator in it. The bore of the pressure regulator is part of the valve body. The pressure regulator is spring loaded and is moved by fluid pressure to regulate the fluid pressure of the transmission. It's constantly moving so overtime it wears the pressure regulator bore so fluid pressure goes around it. Or the pressure regulator sticks and creates unwanted higher then it's supposed to or lower then it's supposed too. You probably need a valve body but your supposed to check the high and low pressure readings and do a step pressure test. Which requires a transmission pressure gauge and a scan tool capable of doing the step pressure. Also when I remove the valve body I air check the clutch packs and reverse servo piston for leakage. Also sometimes the input shaft nut under the transmission side cover loosens up. It causes delays into reverse and even no reverse. If your just going to throw the dice and replace the valve body then make sure you get one that has what's called a sonnax upgrade. That's where the pressure regulator bore is drilled over sized and a sleeve is put in that is much stronger then the original bore in the valve body.I put that in my valve body myself I have the tool kit to install them.I have done like 5 valve bodies with them already.
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Wednesday, February 1st, 2017 AT 8:02 PM
Tiny
SATURNTECH9
  • EXPERT
So how are you making out with your car?
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Friday, February 3rd, 2017 AT 12:45 PM

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