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1999 Saturn SC2 transmission

Tiny
CMORT62
  • MEMBER
  • 1999 SATURN SC2
  • 236,000 MILES
I have a Saturn sc2, sometimes the transmission will switch gears no problem. Sometimes it won't go into reverse. Sometimes it will drive fine then it's like I only have first gear. I just changed the transmission fluid and filter. What could it be? Please help.
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Monday, August 19th, 2013 AT 4:59 PM

8 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
So sometimes you have no reverse unless you give it gas?Any codes in the computer? Sounds like a loose input shaft nut and or worn pressure regulator bore.
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Monday, August 19th, 2013 AT 5:18 PM
Tiny
CMORT62
  • MEMBER
  • 5 POSTS
I have a check engine light, but haven't checked it. I don't give it gas to go into gear. Sometimes it goes into reverse sometimes it don't. Like it's in neutral. Sometimes it drives fine sometimes it won't shift out of first. Could it be a sensor
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Monday, August 19th, 2013 AT 5:21 PM
Tiny
CMORT62
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  • 5 POSTS
Also car is making a weird winding noise from under hood when I push gas
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Monday, August 19th, 2013 AT 5:46 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
If its not going into reverse its not a sensor its most likely a loose input shaft nut or worn pressure regulator bore. I am factory trained on these cars and know them well. As far as the noise it could be a idler pulley bearing. Is it coming from the engine belt area?
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Monday, August 19th, 2013 AT 6:39 PM
Tiny
CMORT62
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  • 5 POSTS
Not sure. What is a pressure regulator bore.
I know about the input shaft nut
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Monday, August 19th, 2013 AT 6:43 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
The regulator bore is part of the upper valve body that the pressure regulator rides into to control the transmissions line pressure. The bore wears causing high or low line pressure causing shifting issues.A line pressure test on the transmission would have to be done to see what was going on.
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Monday, August 19th, 2013 AT 6:59 PM
Tiny
CMORT62
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  • 5 POSTS
Ok. Thank you for your time
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Monday, August 19th, 2013 AT 7:01 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Your welcome that's what were here for.
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Monday, August 19th, 2013 AT 7:18 PM

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