It has started to shift hard between gears

Tiny
COREY_J_COOK
  • MEMBER
  • 2002 SATURN SC2
  • 115,000 MILES
I have a 2002 Saturn Sc2. - 1st into 2nd, and 2nd into 3rd. Any help? At first it was just a little harder shift than normal, but all of a sudden it has turned into a very hard shift between 1st and 2nd and 2nd and 3rd.
Sunday, February 26th, 2012 AT 6:18 AM

15 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Internal pressure solenoid could be failing.
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Sunday, February 26th, 2012 AT 6:46 AM
Tiny
COREY_J_COOK
  • MEMBER
  • 2 POSTS
That's what I was thinking from reading about it, but the mechanic told me a whole new transmission.
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Sunday, February 26th, 2012 AT 6:49 AM
Tiny
FIXITMR
  • MECHANIC
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Wait for saturntech to chime in. I read a new/rebuilt solenoid pack was the best route to take and dont drive it like that or damage can occur.
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Sunday, February 26th, 2012 AT 6:56 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Just to add to this one a hard shift is caused by too high of line pressure. The first thing I would check is if the line pressure fuse is blown in the underhood fuse box. If its not then we have to do a high low line pressure test which is pretty easy to do. You just need to get a transmission pressure test kit to hook it up all you do is unscrew the transmiisson temp sensor. Then screw in the pressure tester adapter my gauge set is under 75 and really nice and would be cheaper to do that then take it somewhere to have it diagnosed. As you can see when you take it to a transmission shop they just want to rebuild or replace the transmission. Which isnt the correct repair its a easy transmission to repair and diagnose but a lot of people just dont know how to fix or diagnose them.
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Sunday, February 26th, 2012 AT 5:42 PM
Tiny
SATURNTECH9
  • MECHANIC
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Here is the pressure tester i have

http://www.amazon.com/gp/aw/d/B000R5G0DO/ref=mp_s_a_1?qid=1330278367&sr=8-1-spell
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Sunday, February 26th, 2012 AT 5:47 PM
Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,540 POSTS
  • 2002 SATURN SC2
  • 175,000 MILES
My 2002 Saturn SC2 with auto trans just started Shifting REAL hard, Jerking when up & down shifting. Fluids are good, drives smooth except when shifting. Any Ideas?
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Monday, April 1st, 2019 AT 10:42 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
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Too much pressure that's your problem you need to do a pressure test to see if its a pressure regulator issue bad line pressure actuator or bad wiring.
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Monday, April 1st, 2019 AT 10:42 AM (Merged)
Tiny
POSSUM0459
  • MEMBER
  • 4 POSTS
  • 2001 SATURN SC2
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 241,000 MILES
Today my car started shifting hard from a stop sign going from first gear to second-gear it jerks the hole car then from secondary to third gear it wants to downshift one gear and then shoot up to third gear but then shifts fine through all the rest of gears.
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Monday, April 1st, 2019 AT 10:42 AM (Merged)
Tiny
SATURNTECH9
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So have you checked for codes yet?You could have a bad valve body line pressure actuator or a bad harness to the transmission.
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Monday, April 1st, 2019 AT 10:42 AM (Merged)
Tiny
POSSUM0459
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  • 4 POSTS
Yes check for codes none at all
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Monday, April 1st, 2019 AT 10:42 AM (Merged)
Tiny
SATURNTECH9
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When you put it in reverse is there a delay does it bang or go normally in reverse?
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Monday, April 1st, 2019 AT 10:42 AM (Merged)
Tiny
SATURNTECH9
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There is probably a pressure issue causing the problem
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Monday, April 1st, 2019 AT 10:42 AM (Merged)
Tiny
SATURNTECH9
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Also have you checked to make suret he battery cables are clean and tight and the alternator is good?
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Monday, April 1st, 2019 AT 10:42 AM (Merged)
Tiny
POSSUM0459
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Yesterday it did have a problem shifting in to reverse it herd shifted, but do not understand this car today I started it up and drove it to a trans shop to b looked at and it shifted just great like no problem at all
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Monday, April 1st, 2019 AT 10:42 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
There could be a loose terminal to the inside fuse box that will cause some wild things to happen. Few people know about it unless you have been working on Saturn's for years.
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Monday, April 1st, 2019 AT 10:42 AM (Merged)

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