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It's the aux A/C cooling fan kicking in ...
Posted by jrfitz81 [Email] (more from jrfitz81) on Thu, 7 Feb 2008 19:14:43
In Reply to: Headlights dim while driving...?, ToddInMA, Tue, 5 Feb 2008 18:11:06
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and believe me, I spent hours and hours cleaning grounds, etc. Tested alternator outputs, tested EDU readings, went to a Saab dealer multiple times -- no help. Used to drive me nuts. Not a problem on my '87 or '86 9kT's, but there it is on the 97 Aero and the 97 CSE.
I even tried replacing the aux cooling fan, suspecting [?] what, perhaps a higher than usual resistance motor. IDK ... took apart the whole front end to replace the aux cooling fan, even built a plywood 'mount' on the floor to test the new fan.
Result: no difference. Frustrating, but my only 'solution': I unplugged the aux cooling fan sensor power lead [below intercooler, front lower driver's side].
Yes, I know - 'but what about the fan?' Well, I'm fairly sure that a) it's a NA market add-on, not in Euro spec and b) it's there for our hot summers, stuck in rush hour traffic, etc. Well, I live in the country and seldom drive this car in bad rush hour traffic. I understand it makes the A/C less efficient in those conditions ... and for a short while, I even re-connected it at the start of the hot season here [mid June, I live in SE Wisc].
That didn't last long 'cause the nighttime flicker is back, of course, unless you select Econ. So it's been disconnected for at least the last four years. A/C still works flawlessly, 142,000 on the car, and no voltage fluctuations.
John
Burlington, Wisc
'73 96 RHD sold after four years in Middle Barton, Oxfordshire, UK
'80 99 sold after 20 years/192,000mi
'86 9kT sold after 12 years/approx 121,000 mi
'87 9kT sold after 9 years/approx 174,000
'97 CSE 225,000
'97 Aero 142,300
Posts in this Thread:
- Headlights dim while driving...?, ToddInMA, Tue, 5 Feb 2008 18:11:06
- It's the aux A/C cooling fan kicking in ..., jrfitz81, Thu, 7 Feb 2008 19:14:43 <-- Viewing This Message
- Cooling fan in February in New England?, ToddInMAq, Fri, 8 Feb 2008 06:31:28
- not that it's a huge deal, but prior posts ..., jrfitz81, Thu, 7 Feb 2008 19:29:59
- by the way, if anyone needs an aux cooling fan assembly, jrfitz81, Thu, 7 Feb 2008 19:18:24
- Re: Headlights dim while driving...?, kandj
, Wed, 6 Feb 2008 18:23:57 - Re: A/C cyling, Dale, Wed, 6 Feb 2008 08:32:24
- Re: Headlights dim while driving...?, John Curran, Wed, 6 Feb 2008 07:05:49
- Re: Headlights dim while driving...?, marvinstockman, Wed, 6 Feb 2008 05:49:22
- Re: Headlights dim while driving...?, Oliversexpedition, Tue, 5 Feb 2008 18:53:02
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