Air compressor going out..

[IntoxicateMe]

Well my ac compressor went out..and we didn't have hte money to fix it. So we baught a shorter belt and bypassed the ac compressor. Now my service engine light stays on all the time, is that normal?

[wakeboardr99]

most of your best prices will be on ebay, typically they will range from 40 to 170 depending on used or new and how good of a deal you get. As for installing it probably cost 50-150 depending on the place. Most places won't install the parts you have, but make sure that if you get them to do everything , they don't charge you too much over for the part what you can pay for it.

[IntoxicateMe]

anyone?

[sierrap615]

year/model?

define "when out" did it seize or stop blowing cold or something else?

any is the SES light always on or only on with a/c? does the cooling fan always run when engine is running? any other info would help.

[IntoxicateMe]

It's a 1993 SC1. And the a/c compressor went completely out. It just stopped working. It made this racket, and eventually it looked like the belt was gonna pop off. So we went down and baught a shorter belt to bypass the air conditioner. Now the Service engine soon light stays on all the time.

[sierrap615]

ok, lets see if i can explain this right...

the belt is on the pulley. the pulley is not directly attached to the compressior pump, there is a clutch inbetween them so the A/C can be turned on and off. simular to the clutch in a transmission. if just the pump seized, the pulley should still turn. since the pulley would not turn, that would lead me to beleve the clutch or pulley are seized.

this next thing is unlikely and just me ranting ---> another thought is sence its a 93, it may have come with R-12 refrigerent from the factory, if the system was ever recharged, they would have converted the system to R-134a, since R-12 is near impossible to get now days. but R-12 and R-134a can not be mixed, the system has to be completely cleaned when converting. if the system wasn't completely flushed out the pump could be damaged, but it shouldn't affect the pulley/clutch.


anyway- for the code

under the dash, by the hood poper, there is a termial, 2 high, 7 wide i think. there will be only three wires hooked up to it. all on the right side, two on top one on bottom. with the key on engine off, put the paper clip in the two top holes, shorting it out. the SES light will blink the codes.

IE one blink, pause, two blinks, pause is 12
three blinks, pause, six blinks, pause is 36

each code is repeated three times, then it goes to the next code, once all codes are read, it goes back to the first and repeats. the first code is always 12, its "Diagnostic System Check"

the codes are:
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)


i bet the code will be 26, the quad driver controls the A/C clutch


if this doesn't lead you anywhere, ask the techs on saturnfans.com/forums