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PCM Cavalier

Tiny
BGEARELLI
  • MEMBER
  • 1995 CHEVROLET
  • 2.3L
  • 4 CYL
  • 2WD
  • MANUAL
  • 180,000 MILES
Dear Colleagues,
I have a Cavalier 2.3L 1995 MT QUAD 16V, and I 've replaced everything even the PCM, Wiring it was repaired too, but i'm still having same problem, i'm reading with Scanner Actron: QUAD DRIVER 1 BAD - QUAD DRIVER 2 BAD - QUAD DRIVER 3 OK - QUAD DRIVER 4 BAD, could you please help me?
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Tuesday, January 12th, 2016 AT 4:46 AM

6 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
I am assuming this is OBD1 as there is no code for this In OBD2 see pics there is also nothing for quad 3&4 this can be a shorted wire as well as dirty battery cables or battery condition as well as grounds and connections
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Tuesday, January 12th, 2016 AT 6:22 AM
Tiny
BGEARELLI
  • MEMBER
  • 4 POSTS
Dear HMAC300, thanks for your fast response!
Why do I have to check the EVAP solenoid? This valve is so relevant for the system?
Thanks a lot,
Regards
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Tuesday, January 12th, 2016 AT 8:09 AM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Because that is what may be giving your the quad driver problem same with both if they don't work or are shorted out you end up with that code.I see that may be an actron scanner is it made for OBD1? That may be your problem.
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Tuesday, January 12th, 2016 AT 12:20 PM
Tiny
BGEARELLI
  • MEMBER
  • 4 POSTS
Good Shoot, I don't hear any sound when I turn key ON position from EVAP Solenoid, however when it make a direct connection from battery I hear a sound very similar to relay, in my case must be the wiring. Thank genius!
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Tuesday, January 12th, 2016 AT 7:25 PM
Tiny
BGEARELLI
  • MEMBER
  • 4 POSTS
Dear HMAC300,
I've repared the line and EVAP connector, now when a Turn ON the key I hear the A/C RELAY click, but I don't hear the EVAP click, that's normal?
Have a good day
Regards.-
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Saturday, February 20th, 2016 AT 6:12 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
If your codes have gone away don't worry about it. It only works at certain times when it is called for so if even you hear arelay click doesn't mean it's for the evap.
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Sunday, February 21st, 2016 AT 5:20 AM

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