Question about 1993 Saturn SL2

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1994 saturn transmission

My transmission shifts smooth when cold. after warm up, downshifts to 1st and will not shift. disconnect battery and let sit for 5 min, then works smooth again for 5 min, then will not shift again. checked sylenoids in valve body and all ohm at .5. no check engine light. desperate for a solution.

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: 1994 Saturn SC1 reverse slam on occasion

i had a 1994 saturn sl2 that did the same thing what you need to do is change the transmission filter and fluid and you should not have this problem any more if you can afford it go get the transmission flushed.

Posted on Mar 01, 2009

fischmilch
  • 96 Answers

SOURCE: 99 Saturn SC1 ''Service engine soon'' light is on.

Did you get the code that triggered the SEL? If you know that, it will be easier to diagnose your problem. You can do it without a tool on the old saturns. Just need a paperclip. :

Use a paper clip to jumper Terminal A and B of the ALDL *Assembly Line Diagnostic Link* which is above your left knee.
Terminal A is an interal ground and is the top right terminal in the connector. Terminal B is directly adjacent and to the left of Terminal A.

Turn the ignition to ON.

All codes are 2 digits between 11 and 99. Codes are displayed on the SES light by flashing the light with short and long pauses to distinguish digits of one code from digits of another. The short pause is used between digits of the same code, long pauses are between codes. Also, each code is flashed three times before going to the next code.

For example, the sequence of code 12 will be: flash, pause, flash-flash, long pause, then repeat 2 times. If Code 12 is not displayed, the self-diagnostic pogram i snot functioning properly.

If only Code 12 is displayed, no system malfunctions have been stored.

Any existing system fault codes are displayed in order from low to high, except for Code 11.

On vehicles with an automatic transaxle and on which exist stored transaxle codes, Code 11 will be displayed last, then the SHIFT TO D2 light will begin flashing transaxle codes of flags.

When all engine codes have been displayed, Code 12 will flash again.

Diagnostic Codes
11. Transaxle Codes present
12. Diagnostic System Check
13. Oxygen sensor, circuit open or not ready
14. CTS circuit, out of range high
15. CTS circuit, out of range low
17. PCM fault, pullup resistor
19. 6x signal fault, no 6x signal between reference pulses
21. TPS circuit, out of range high
22. TPS circuit, out of range low
23. ATS circuit, out range low
24. VSS circuit, no signal
25. ATS circuit, out or range high
26. Quad Driver output fault
32. EGR system fault
33. MAP sensor circuit, out of range high
34. MAP sensor circuit, out of range low
35. IAC valve, rpm out of range
41A EST circuit open
41B EST circuit shorted
42A Bypass circuit grounded
42B Bypass circuit open
42C Bypass circuit shorted
41. EST bypass, open or shorted
42. EST bypass, open or shorted
43. ECS (knock sensor) circuit open or shorted
44. Oxygen sensor indicates system lean
45. Oxygen sensor indicates system rich
46. Power steering pressure switch circuit, open
49. Idle rpm out of limit high (vacuum leak)
51. PCM memory error
55. A/D converter error in PCM
81. ABS message fault (1993 vehicles with TCS)
82 PCM internal communication fault


Diagnostic Flags
27. Quick quad driver output fault (1993 only)
48. Reference imput intermittent or noisy
52. Battery voltage out of range
53. ESC knock present
54. Five volt reference ground
58. Battery voltage unstable
61. 6x signal fault
63. Option check sum error
67. Handwheel sensor circuit fault
71. Cooling system temperature high
72. Coolinng system temeprature low
73. CTS sensor unstable
74. CTS/transaxle temperatuer sensor ratio error
76. ATS sensor unstable
83. Low coolant (1993 only)

Posted on Mar 27, 2009

  • 55 Answers

SOURCE: hard transmission shift from 1st to 2nd after hot drive

make sure you maintain trans fluid, may be low or very dirty. get serviced,

Posted on Apr 24, 2009

  • 2 Answers

SOURCE: 1997 sL1 Saturn manual transmission hard to change gears

The dipstick is behind the battery, below the master brake cylinder and is not the clutch reservoir. It has a red flip top handle instead of a ring like most dipsticks. It was hard for me to find due to engine grease. I had the same problem and was able to see that I was low on fluid (only a little) and adding fluid helped the problem. Questions? kurt1431 at comcast dot net.

Posted on Jun 29, 2009

Jta91
  • 99 Answers

SOURCE: 1999 saturn sl2 transmission wont shift from 1st gear

Your valve body and possibly input shaft nut need to be replaced. The valve body's booster valve is worn down and won't create pressure. Before it went completely out it slammed on the input shaft nut and loosened it.

You need to replace the valve body and retorque the input shaft nut. The transmission is not junk. The above needs to be replaced and change the filter and fluid and do it every 20K miles.

Posted on Feb 22, 2010

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