Notices
928 Forum 1978-1995
Sponsored by:
Sponsored by: 928 Specialists

HVAC blow by

Thread Tools
 
Search this Thread
 
Old Aug 31, 2006 | 04:43 PM
  #1  
jetrainor's Avatar
jetrainor
Thread Starter
Burning Brakes
 
Joined: Oct 2004
Posts: 798
Likes: 1
From: Armstrong, B.C.
Default HVAC blow by

Before i start digging under the airbox i'd appreciate an opinion based on the following. Came home last nite after a spirited half hour blast and as i pulled into the garage the inside of my windshield fogged up instantly and steam was pouring out from the hood just in front of the windshield on the outside. The car ran normally and the coolant level this morning is only slightly down in the reservoir. I'm hoping its something like a faulty valve or split hose.....don't see any oil in the antifreeze or foam on the oil cap so i'm not expecting head gasket or similar. thanks for any opinions.

87 euro auto
Reply
Old Aug 31, 2006 | 04:59 PM
  #2  
heinrich's Avatar
heinrich
928 Collector
Rennlist Member

20 Year Member
 
Joined: Jan 2003
Posts: 17,270
Likes: 5
From: Seattle
Default

check the heater core and heater hoses under the black cowl cover at base of the windshield outside
Reply
Old Aug 31, 2006 | 07:06 PM
  #3  
jetrainor's Avatar
jetrainor
Thread Starter
Burning Brakes
 
Joined: Oct 2004
Posts: 798
Likes: 1
From: Armstrong, B.C.
Default

Thanks Heinrich.....the steam was pouring out from that area
Reply
Old Aug 31, 2006 | 07:40 PM
  #4  
Jim bailey - 928 International's Avatar
Jim bailey - 928 International
Addict
Rennlist Member

Rennlist
Site Sponsor

 
Joined: Jul 2001
Posts: 11,542
Likes: 4
From: Anaheim California
Default

You may need to remove the lower airfilter box to examine the fitting on the back of the passenger side head ,the short hose from that to the heater valve ,the heater valve ,and the heatar hoses which run behind the engine allong the fire wall
Reply
Old Aug 31, 2006 | 09:51 PM
  #5  
heinrich's Avatar
heinrich
928 Collector
Rennlist Member

20 Year Member
 
Joined: Jan 2003
Posts: 17,270
Likes: 5
From: Seattle
Default

True JimB ... JE, those little hoses love to split...
Reply
Old Sep 1, 2006 | 01:50 AM
  #6  
Bill Ball's Avatar
Bill Ball
Under the Lift
Lifetime Rennlist
Member
20 Year Member
 
Joined: Mar 2002
Posts: 18,648
Likes: 52
From: Buckeye, AZ
Default

And last weekend we saw the hose port on the block for the heater valve fall out - epoxied it back in, waited 24 hours, went out racing. Based on location of the steam cloud, I think H'man has it nailed.
Reply
Old Sep 1, 2006 | 01:53 AM
  #7  
heinrich's Avatar
heinrich
928 Collector
Rennlist Member

20 Year Member
 
Joined: Jan 2003
Posts: 17,270
Likes: 5
From: Seattle
Default

Bill that's why they superseded that port with a one-piece unit in I think '88
Reply
Old Sep 1, 2006 | 05:25 AM
  #8  
Bill Ball's Avatar
Bill Ball
Under the Lift
Lifetime Rennlist
Member
20 Year Member
 
Joined: Mar 2002
Posts: 18,648
Likes: 52
From: Buckeye, AZ
Default

Hmmm...This was an 88. Lemme check the PET.

Back... I do the the change in 88 in the PET. Maybe the car was an 87. It's Tim & Cheryl.

Thanks for the tip, Hman!
Reply
Rennlist Stories

The Best Porsche Posts for Porsche Enthusiasts

story-0

Theon Goes Full Carbon Fiber With Stunning New Build

 Verdad Gallardo
story-1

Six Genius Porsche-Themed Gifts That'll Make Any Dad or Grad Smile

 Joe Kucinski
story-2

10 Used Porsches Are Selling for Way Too Cheap

 Joe Kucinski
story-3

Tuner Is Converting Porsche 911s Into Shooting Brakes

 Verdad Gallardo
story-4

This Coachbuilt Creation Is A Modern Take on the Legendary Porsche 917

 Verdad Gallardo
story-5

Is This Convertible Cayenne A Steal, Or A Returnless Investment?

 Verdad Gallardo
story-6

10 Best Non-Flat Six Porsches You Can Buy For Under $100K

 Joe Kucinski
story-7

Porsche's Top 5 Most Questionable Naming Decisions

 Verdad Gallardo
story-8

Pogea Racing's 964 Porsche 911 Reimagination Stands Out in a Crowded Field

 Verdad Gallardo
story-9

6 Convertible Top MYTHS Most People Don't Understand!

 Michael S. Palmer




All times are GMT -3. The time now is 02:56 AM.

story-0
Theon Goes Full Carbon Fiber With Stunning New Build

Slideshow: Built around a carbon-bodied 964 and a naturally aspirated 4.0-liter flat-six, this bespoke commission highlights how far the restomod formula has evolved.

By Verdad Gallardo | 2026-06-06 14:41:46


VIEW MORE
story-1
Six Genius Porsche-Themed Gifts That'll Make Any Dad or Grad Smile

Slideshow: Six genius gifts that'll make any Dad smile.

By Joe Kucinski | 2026-06-04 04:58:13


VIEW MORE
story-2
10 Used Porsches Are Selling for Way Too Cheap

Slideshow: These 10 used Porsches offer more driving thrills than their price would suggest.

By Joe Kucinski | 2026-06-03 09:11:13


VIEW MORE
story-3
Tuner Is Converting Porsche 911s Into Shooting Brakes

Slideshow: A Polish Porsche specialist is moving ahead with one of the most unusual 911 conversions in recent memory: a shooting brake version of the 991-generation sports car.

By Verdad Gallardo | 2026-06-01 19:46:47


VIEW MORE
story-4
This Coachbuilt Creation Is A Modern Take on the Legendary Porsche 917

Slideshow: A Porsche Carrera GT has been transformed into a one-off coachbuilt machine that blends analog supercar engineering with styling inspired by the legendary 917 race cars.

By Verdad Gallardo | 2026-06-01 17:06:04


VIEW MORE
story-5
Is This Convertible Cayenne A Steal, Or A Returnless Investment?

Slideshow: A heavily modified Porsche Cayenne convertible with faux wood trim and a long list of flaws recently sold at auction for surprisingly little money.

By Verdad Gallardo | 2026-05-29 18:52:37


VIEW MORE
story-6
10 Best Non-Flat Six Porsches You Can Buy For Under $100K

Slideshow: If you have $100K to spend on a Porsche but want something a little different, these are the 10 best non-flat six Porsches you can buy.

By Joe Kucinski | 2026-05-28 15:36:11


VIEW MORE
story-7
Porsche's Top 5 Most Questionable Naming Decisions

Slideshow: For a company obsessed with engineering precision, Porsche has occasionally named its cars in ways that left even loyal enthusiasts scratching their heads.

By Verdad Gallardo | 2026-05-27 18:43:48


VIEW MORE
story-8
Pogea Racing's 964 Porsche 911 Reimagination Stands Out in a Crowded Field

Slideshow: Pogea Racing's latest Porsche 964 project blends carbon-fiber construction, modern chassis upgrades, and up to 500 horsepower while keeping the air-cooled 911 experience firmly analog.

By Verdad Gallardo | 2026-05-23 10:34:27


VIEW MORE
story-9
6 Convertible Top MYTHS Most People Don't Understand!

Slideshow: dispelling common convertible top myths

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE