1996 Saturn SL1 pressure control solenoid

Tiny
FRANKARCHULETA1
  • MEMBER
  • 1996 SATURN SL1
  • 150,000 MILES
I took my car to a mechanic to have a diagnose done on it, they said it was a code po740 pressure control solenoid, in the transsmission, it was shifting into reverse hard, but how. Do I know out of the 5 which one to replace?
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Monday, November 11th, 2013 AT 4:10 PM

11 Replies

Tiny
SATURNTECH9
  • EXPERT
The P0740 is unrelated to hard engagement into reverse. That's going to be different repair from the P0740. As far as the reverse issue we have to do a pressure test on the transmission to look into that.
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Monday, November 11th, 2013 AT 4:17 PM
Tiny
SATURNTECH9
  • EXPERT
After clearing the codes will the code come back shortly letting it sit and idle?Its not just a matter of thesolenoid it could be wires or the actuator buss plate.
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Monday, November 11th, 2013 AT 4:23 PM
Tiny
FRANKARCHULETA1
  • MEMBER
I'm unsure? That's just what I was told, was the pressure control solenoid, I know that there is 5 solenoids which 1 would need to be replaced if that was the problem?
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Monday, November 11th, 2013 AT 5:40 PM
Tiny
SATURNTECH9
  • EXPERT
That would be the FCC solenoid also forgot to mention it could be the computer as well. So with being sure after testing we can't replace anything or that's called guessing and can be very expensive. Did they say the solenoid would fix the reverse issue?This is going to take some tools and diyer knowledge. Possibly a very expensive scan tool that can buzz the actuators etc.
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Monday, November 11th, 2013 AT 5:59 PM
Tiny
SATURNTECH9
  • EXPERT
I ment to say tcc solenoid also I was asking if the code is active meaning you clear it and it will come back quick letting it idle?
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Monday, November 11th, 2013 AT 6:12 PM
Tiny
FRANKARCHULETA1
  • MEMBER
No the code is gone and yes he said changing this would fix the problem, so which 1 is the tcc solenoid
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Tuesday, November 12th, 2013 AT 4:05 AM
Tiny
SATURNTECH9
  • EXPERT
For one the tCC solenoid won't cause reverse to do what it does the tcc doesn't have anything to do with reverse. Also without the code being active like a I mentioned before we can't diagnose the problem as far as the code goes. So for him to say that from the code the solenoid was bad was a very poor guess. Especially saying it would fix reverse too. Just to give you a background on myself I worked for Saturn dealers for over 16 and half years an I am a Saturn factory trained tech. So I know these cars well if the cod isn't active I would first address the reverse issue. The reverse issue the cause of it could get worse enough to burn up some clutches in the transmission. What's happening with reverse is it takes full Line pressure to engage reverse the forward gear take much less to engage. So if the transmission can give full line pressure reverse won't work correctly. If the pressure gets low enough it will cause thee forward gears to slip burning clutches. There are several different reasons for reverse issues on those transmissions.A leak in the second gear clutch position since reverse shares 2nd gear clutch piston. Usually you will see a code for second gear gear ratio error of P0732 when this happens. But of the leak is small enough it still cause issues with just reveres.A another reason is a loose input shaft nut an the third most common reason I have seen is a worn pressure regulator bore in the valve body. To diagnosis the we I'll need a transmission pressure gauge set I can recommend one to you the one I have is reasonable. I bet the guy who read your codes didn't tell you all this.
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Tuesday, November 12th, 2013 AT 9:13 AM
Tiny
FRANKARCHULETA1
  • MEMBER
No, he didn't tell me any of that, all I know is I paid him to do a diagnose and that's what he said the problem was and wanted to charge me $600 to fix it along with a top cover gasket, it shifts hard in reverse all the time as far as the other gears some times its worse then others
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Wednesday, November 13th, 2013 AT 5:36 PM
Tiny
SATURNTECH9
  • EXPERT
Do you have a delay bang into reverse?
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Wednesday, November 13th, 2013 AT 10:19 PM
Tiny
FRANKARCHULETA1
  • MEMBER
Not really it does it rite when put in reverse even if brake is still pushed down
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Thursday, November 14th, 2013 AT 1:38 PM
Tiny
SATURNTECH9
  • EXPERT
Does it shift hard into the forward gears?
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Thursday, November 14th, 2013 AT 4:13 PM

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