Go Back   986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Post Reply
 
LinkBack Thread Tools Display Modes
Old 12-14-2005, 07:40 PM   #1
Registered User
 
deliriousga's Avatar
 
Join Date: Jun 2005
Location: USA!!
Posts: 1,159
No heat. Any suggestions?

After my company's Christmas party tonight, we were coming home in freezing rain. Once the engine was warmed up, I noticed the air was still pretty cold. The windows were not defogging, so I started messing with the controls. I cannot get the heat to come on at all and the defroster vents on the dash will not blow. 45 minutes later I pull into the garage with a windshield that's iced up and a wife who resembles a grape popsicle.

Has anybody dealt with this? Does the heater valve in the Boxster fail in the open or closed position?

I'm going to start simple with fuses and relays, but wondering if there's a magical fix out there that someone has run into.

TIA!

__________________
1987 928S4 Silver Metallic (980)/Navy (TP) 5-Speed
2000 Boxster Speed Yellow/Black 5-Speed
1966 Wife White/Brown Top
1986 Daughter White/Brown Top (Sold!)
1992 Daughter White/Blonde Top

Last edited by deliriousga; 12-15-2005 at 03:15 PM.
deliriousga is offline   Reply With Quote
Old 12-15-2005, 05:08 AM   #2
Registered User
 
tqtran's Avatar
 
Join Date: Aug 2004
Location: Indiana, USA
Posts: 416
I've never actually heard about this with Porsche but I do know that this is a common problem with Jaguar XKs. It almost always due to the heater coil and some plastic bits melting.
tqtran is offline   Reply With Quote
Old 12-15-2005, 05:45 AM   #3
Registered User
 
Join Date: Jun 2005
Location: Omaha, Nebraska
Posts: 17
try to play with the ignition key

I have experiences too,
Try next, push very gentle counterclockwise your ignition key, so that it will come a little bit backwards, but not so much so that it will come to II position and stop the engine. In my humble opinion this is have something to do with a loosen contacts, but I can be very wrong.
Sincerely yours
z
zagit is offline   Reply With Quote
Old 12-15-2005, 06:27 AM   #4
Registered User
 
Join Date: Jul 2004
Location: Houston, Texas
Posts: 7,243
John, you know, it might just be your ignition switch going out, but if you've replaced this recently it's probably the heater core.
RandallNeighbour is offline   Reply With Quote
Old 12-15-2005, 11:28 AM   #5
Registered User
 
deliriousga's Avatar
 
Join Date: Jun 2005
Location: USA!!
Posts: 1,159
Quote:
Originally Posted by RandallNeighbour
John, you know, it might just be your ignition switch going out, but if you've replaced this recently it's probably the heater core.
I replaced the ignition switch about 6 months ago so hopefully that's not the problem. I did find there is a heat actuation relay in the bank so I'm going to replace that tonight and see if it does anything. Otherwise, like you say, I'm afraid it's the core.
__________________
1987 928S4 Silver Metallic (980)/Navy (TP) 5-Speed
2000 Boxster Speed Yellow/Black 5-Speed
1966 Wife White/Brown Top
1986 Daughter White/Brown Top (Sold!)
1992 Daughter White/Blonde Top
deliriousga is offline   Reply With Quote
Old 12-15-2005, 11:57 AM   #6
Registered User
 
Pilot2519j's Avatar
 
Join Date: Jan 2004
Location: Huntersville, NC
Posts: 655
Lightbulb

It has not happened to me with the Porsche but with my Audi it was the thermostat(in the radiator) gone bad.
__________________
Pluralitas non est ponenda sine neccesitate
Pilot2519j is offline   Reply With Quote
Old 12-15-2005, 01:19 PM   #7
Registered User
 
deliriousga's Avatar
 
Join Date: Jun 2005
Location: USA!!
Posts: 1,159
Quote:
Originally Posted by Pilot2519j
It has not happened to me with the Porsche but with my Audi it was the thermostat(in the radiator) gone bad.
Are you talking about the coolant temp sensor?

I was also considering the interior temp sensor since that has been a problem with others in the 928, but it usually gives you an always hot situation.
__________________
1987 928S4 Silver Metallic (980)/Navy (TP) 5-Speed
2000 Boxster Speed Yellow/Black 5-Speed
1966 Wife White/Brown Top
1986 Daughter White/Brown Top (Sold!)
1992 Daughter White/Blonde Top
deliriousga is offline   Reply With Quote
Old 12-15-2005, 03:14 PM   #8
Registered User
 
deliriousga's Avatar
 
Join Date: Jun 2005
Location: USA!!
Posts: 1,159
Talking Problem solved!

It was the "Actuation Heating" relay (#18). Replaced it and the defog vents work now and everything is toasty again. I love those $5 fixes!

Thanks!! :dance:

__________________
1987 928S4 Silver Metallic (980)/Navy (TP) 5-Speed
2000 Boxster Speed Yellow/Black 5-Speed
1966 Wife White/Brown Top
1986 Daughter White/Brown Top (Sold!)
1992 Daughter White/Blonde Top
deliriousga is offline   Reply With Quote
Post Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 09:00 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2024 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page