Does the A/C turn on a fan?
#32
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#33
Nordschleife Master
dr bob was referring to battery voltage at each side of the fuses.
OP was doing the diagnostics in the WSM which involve measuring testing at the fan controller of signal control from amplifier and test function signal - 7v at controller with ignition ON/engine OFF/AC switch ON.
OP was doing the diagnostics in the WSM which involve measuring testing at the fan controller of signal control from amplifier and test function signal - 7v at controller with ignition ON/engine OFF/AC switch ON.
#35
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Location: Darien, CT
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Replacement fan installed, but it isn't getting enough voltage/current to spin it.
I have a spare of the module that goes by the passenger seat, but my mechanic believes it is the one under the hood that is hard to find.
Thoughts?
Thanks!
-Robert
I have a spare of the module that goes by the passenger seat, but my mechanic believes it is the one under the hood that is hard to find.
Thoughts?
Thanks!
-Robert
#36
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The inside controller is easy to swap - just try it. Just unplug the old one and try the new one loosely plugged in. I believe ROG100 can sell you a refurbished (by Greg Brown) fan final stage.
Alan
Alan
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Thanks!
-Robert
#38
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Standard checks, first check fuses, then swap leads and verify it isn't the fan itself, then test the final stage test by swapping with another car. If it doesn't work, then try swapping the controller next to the passenger seat.
#39
Drifting
Standard checks, first check fuses, then swap leads and verify it isn't the fan itself, then test the final stage test by swapping with another car. If it doesn't work, then try swapping the controller next to the passenger seat.
Fraggle - we missed you today...great turn out at Chris's up on the mountain.
#43
Racer
hi,
good to hear that the problem is solved. Yes, the fan power stage does this. Typical effect is that one fan runs full speed while the other is silent. The fan controller box at the seat cycles through a test cycle which you can hear in the fluctuating RPM. Every 30 secs or so the controller tries to find out if the other fan runs or not. If it doesn't the running fan goes to full power again. Normally they both run about half power.
For the record: sometimes it is the controller box itself that causes the problem but mostly the powerstage is at fault.
regards
Theo Jenniskens
1992 928GTS
The Netherlands
good to hear that the problem is solved. Yes, the fan power stage does this. Typical effect is that one fan runs full speed while the other is silent. The fan controller box at the seat cycles through a test cycle which you can hear in the fluctuating RPM. Every 30 secs or so the controller tries to find out if the other fan runs or not. If it doesn't the running fan goes to full power again. Normally they both run about half power.
For the record: sometimes it is the controller box itself that causes the problem but mostly the powerstage is at fault.
regards
Theo Jenniskens
1992 928GTS
The Netherlands