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NO Power to the CCU, please help
Hey guys
My AC works great and my heat, but the power to the CCU cuts out, and none of the controls work, NO power what so ever except for the back lights on the face, NO AC, NO Heat, NO fan, then a few minutes later everything works great, ?? Any ideas guys ?
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1986 944 turbo -first car 1997 993 Cab 6 speed-sold 1992 964 C2 turbo SOLD, 911GT ,CIS, 428 fwhp 450 trq, Carrillo rods, 964 cams, TT retainers,7.5 comp 1.1 bar boost 320 ml black fuel head 009 injectors, 044 pumps, 60-1 T4/T3 dual scroll turbo |
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06-11-2017, 01:36 PM
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Registered
Join Date: Nov 2010
Location: Missouri
Posts: 2,186
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Try This on the connectors
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I think that maybe I'm dreaming.. |
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06-13-2017, 07:13 AM
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My first plan of attack my intermediate working CCU,
1 check all the fuses 1, 17, 28 and 36. 2 lift the fuse box and check for any lose wires, 3 clean the the connection from the ground strap to the chassis, 4 clean the ground connections to the chassis behind the fuel gauge, 5 check for a strong ground on pin K 1. 6 check for continuity. between pin K 1 and G18 on the CCU, 7 check for 12V on pins K2, G17, G29, G35, I don't plan on checking the oil cooler sensor or the evaporator sensor or the AC FAN sensor because they all work when I have power to the CCU, which is 75% of the time. because of that I'm assuming it's not my relays. I also jumped the the relays and the fans on the AC and Oil cooler come on only when there is power to the CCU, but when there is no power to the CCU jumping does no good. If I don't have a strong ground, I'm thinking of running a wire from the battery to the chassis ground connection behind the fuel gauge, I'm assuming that the CCU harness gets it's ground from there, If any one has experienced this before, please chime in At a glance the pins on the harness look fine as does the wiring, Let the fun begin
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1986 944 turbo -first car 1997 993 Cab 6 speed-sold 1992 964 C2 turbo SOLD, 911GT ,CIS, 428 fwhp 450 trq, Carrillo rods, 964 cams, TT retainers,7.5 comp 1.1 bar boost 320 ml black fuel head 009 injectors, 044 pumps, 60-1 T4/T3 dual scroll turbo |
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06-15-2017, 09:32 AM
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Did all that last night, I had good ground, So far the power has not cut, I drove a bunch last night and today its 88 deg and 50% humidity, its blowing cold... 36 deg at the vent, I think thats good. and all the fans are working in and out side of the car,
  
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1986 944 turbo -first car 1997 993 Cab 6 speed-sold 1992 964 C2 turbo SOLD, 911GT ,CIS, 428 fwhp 450 trq, Carrillo rods, 964 cams, TT retainers,7.5 comp 1.1 bar boost 320 ml black fuel head 009 injectors, 044 pumps, 60-1 T4/T3 dual scroll turbo |
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06-15-2017, 09:36 AM
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I had the CCU working for a few days then the power would cut off again, Then nothing worked, I have sent the CCU out to ECU Doctors for a rebuild , It will be in tomorrow
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1986 944 turbo -first car 1997 993 Cab 6 speed-sold 1992 964 C2 turbo SOLD, 911GT ,CIS, 428 fwhp 450 trq, Carrillo rods, 964 cams, TT retainers,7.5 comp 1.1 bar boost 320 ml black fuel head 009 injectors, 044 pumps, 60-1 T4/T3 dual scroll turbo |
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07-11-2017, 12:28 PM
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Got my CCU back from ECU Doctors, Plug and play, looks like new and works great, thank you ECU Doctors, Now if they would take on rebuilding EZ69's
   
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1986 944 turbo -first car 1997 993 Cab 6 speed-sold 1992 964 C2 turbo SOLD, 911GT ,CIS, 428 fwhp 450 trq, Carrillo rods, 964 cams, TT retainers,7.5 comp 1.1 bar boost 320 ml black fuel head 009 injectors, 044 pumps, 60-1 T4/T3 dual scroll turbo |
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07-12-2017, 07:54 PM
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Blackbird
