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Registered
Join Date: Sep 2006
Location: Richland Washington
Posts: 222
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I've asked this question on numerous sites
But unfortunately with no real answer:-
Has anyone else had this happen? On starting the car, in the morning, the fan switches on and operates in fits and starts. All heater switches are off. This doesn't happen after the car has been stood all day, just in the mornings. The fan stops after about 20-30 seconds. Any ideas? Thanks in advance. |
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10-07-2006, 09:43 AM
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Join Date: Dec 2005
Location: florida
Posts: 78
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WHAT YEAR CAR ARE WE TALKING ABOUT?
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10-07-2006, 02:07 PM
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Location: Richland Washington
Posts: 222
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1995 993 Cabriolet.
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10-07-2006, 02:36 PM
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Autodidactic user
Join Date: May 2003
Location: Summerfield, NC
Posts: 1,298
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Have you tried posting this on the 993 Technical Forum?
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Please help the MFI community keep the Ultimate MFI resources thread and the Mechanical fuel injection resource index up to date. Send me a PM and I'll add your materials and suggestions.  1973 911E Targa (MFI) Last edited by David E. Clark; 10-07-2006 at 03:28 PM.. |
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10-07-2006, 02:46 PM
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Join Date: Apr 2005
Location: Co. Carlow, Ireland
Posts: 455
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Is it something to do with the heater blower relay? I know my car is much earlier than yours, but I used to find that my heater blower would work eratically, so I took the relay out, removed its metal cover and cleaned it, popped it back together, and my problem was completely fixed. Dunno if that's any use to you or not.
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Charles '84 911 3.2 |
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10-07-2006, 03:21 PM
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Crusty Conservative
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Are you sure it's the fan motor? There is an air pump that runs for 30 sec to 1 min upon cold start only, helps the cats start up nice for min cold start emissions.
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Bill 69 911 T Targa, 2.4E w/carbs (1985-2001) 70 911 S Coupe, 2nd owner (1989- 2015) 73 911 T Targa, 3.2 Motronic (2001- ) |
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10-07-2006, 04:54 PM
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Registered
Join Date: Sep 2006
Location: Richland Washington
Posts: 222
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David E Clark: Yes.
CharlesJones: Thanks, I'll look into this solution. silverc4s: It's definitely the heater fan, you can feel cold air from the vents and like I said it's sporadic, starts, stops, starts again. Thanks for the suggestions. |
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10-08-2006, 08:20 AM
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Light,Nimble,Uncivilized
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Quote:
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Drago '69 Coupe R #464 |
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10-08-2006, 10:10 AM
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True. Not much going on in there. On the other hand, there are a bunch of guys on here with 993's.
Do you have an owner's manual? It could be some "normal" condition that the manual mentions should happen when the car is cold. |
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10-08-2006, 10:23 AM
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Registered
Join Date: Sep 2006
Location: Richland Washington
Posts: 222
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I have the Adrian Streather 'Essential Guide', but haven't seen any mention of the subject as yet.
I've considered the "normal" condition, but it's the sporadic nature of the fans operation that concerns me, that doesn't feel "normal". Thanks for the input, I'll keep searching. |
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10-08-2006, 10:48 AM
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1970 Porsche 911S 2.2l MFI
1987 Porsche 911 Targa 3.2
1984 Porsche 911 Carrera Cabriolet
2007 Porsche Cayman
2000 Porsche Carrera
