Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > Porsche 924/944/968 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
ds475's Avatar
 
Join Date: Aug 2003
Location: Austin, Texas
Posts: 717
Send a message via AIM to ds475
Do our cars heat up a lot after we turn them off?

I was wondering, because I know noticed my car heating up from 1/2 to 3/4 after shutting off the engine, even with the radiator fans still on (they're on a plug... but that's another story) and another big ass shop fan blowing on it from the front with the hood open.


I don't race home either, I always make sure to give my car a warm down session. Is that normal?

__________________
'82 928S
'85.0 944 Not Awesome - Being Parted Out
Old 10-16-2003, 08:19 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered User
 
bearone2's Avatar
 
Join Date: Jun 2003
Location: Phoenix, AZ
Posts: 1,327
the water will get hotter and expand because the engine isn't running and the water isn't being cooled by air flow coming over the radiator.
the fans will cool it down if they come on properly or with your plug arrangement.

my car runs at the 1st line and if i shut it off and go into a store for 5 minutes, come out, restart, the temp will get up to the 2nd line but will come down to the first line because of airflow over the radiator with movement or the fans should come on and pull the temp down.
__________________
87 951, K27/6, Almond Beige, 17" Turbotwist
87 944S, alpine white, 5sp died a violent death
84 944, silver/brown, auto, gone but not forgotten

"may the force be with you"
Old 10-16-2003, 08:29 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
ds475's Avatar
 
Join Date: Aug 2003
Location: Austin, Texas
Posts: 717
Send a message via AIM to ds475
typically, my running temp is 1/2, up to 3/4 run hard.
__________________
'82 928S
'85.0 944 Not Awesome - Being Parted Out
Old 10-16-2003, 09:33 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Manute's Avatar
 
Join Date: Aug 2003
Location: Madrid,Spain
Posts: 728
bearone is right,water stops moving and then builds heat,that´s why fans usually run for a minute after engine is stopped. I´ve observed it in every car,but specially in my 951,which is a heat machine!

If you stop the engine at 1/3,and temp rises to 3/4,just try to start the engine again...you´ll see how temp drops again in seconds.
__________________
---------------------------------------------
85´5 951

Last edited by Manute; 10-17-2003 at 12:25 AM..
Old 10-17-2003, 12:23 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
Join Date: Mar 2000
Location: Riverdale, GA
Posts: 363
Send a message via Yahoo to Cebu
Check this link: http://www.geocities.com/MotorCity/Downs/3837/thermosy.html
__________________
85.5 944na
Automatic
V-65 Magna
94 Impala SS
Old 10-17-2003, 08:29 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
winter-hater club member
 
nynor's Avatar
 
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
your temp gauge reads hotter after the water stops moving because it is then absorbing the heat from the motor and not getting cooled at the radiator. because the temperature sensor is at the top of the head, it is actually reading the temperature of the water, not necessarily the core temperature of the engine. thus, when the water is no longer circulating, the coolant rises to the core temperature of the engine.

its all good.
__________________
2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester

"COOL PRIUS!" - Nobody Ever
Old 10-17-2003, 08:35 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
SoCal Driver's Avatar
 
Join Date: Feb 2002
Location: Costa Mesa
Posts: 8,587
Garage
Your temp gauge sender is on the engine.

The fan temp switch is on the radiator.
__________________
Hugh - So Cal 83 944 Driver Person
NOT a 'real' Porsche -- Its Better!!!!
When was the last time you changed your timing and balance belts and/or cam chain and tensioner?
New Users please add your car's year and model to your signature line!
Never break more than you fix!
Old 10-17-2003, 02:43 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
winter-hater club member
 
nynor's Avatar
 
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
you might want to check that again.... its on the head, i just replaced mine.
__________________
2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester

"COOL PRIUS!" - Nobody Ever
Old 10-17-2003, 03:57 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
todwic's Avatar
 
Join Date: Feb 2002
Location: 3rd plane of Hades
Posts: 2,502
Garage
Send a message via AIM to todwic Send a message via Yahoo to todwic
I hate to disagree, but it's in the block.
__________________
*Disclaimer: The person above is actually dumber than he appears.
my web site Torque values maintainance and repairs lots of my rebuild pics weights and measurements
'84 944 auto/ps/ac/cc
'86 951
Providing ignorance one post at a time.
Old 10-17-2003, 08:05 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
winter-hater club member
 
nynor's Avatar
 
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
um... the temp sender that goes to the temp guage is in the head... but, for the sake of this little argument, i am going to go look again... be right back.
__________________
2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester

"COOL PRIUS!" - Nobody Ever
Old 10-18-2003, 08:58 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
winter-hater club member
 
nynor's Avatar
 
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
ok, my bad... it is in the block, technically, about 1 centimeter below the head. however, everything else i stated is correct, regarding the temperature being the temp of the water, because the sender is on the outside of the block with a water jacket between the sender and the actual source of the heat. i apologize for my one centimeter mistake.

__________________
2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester

"COOL PRIUS!" - Nobody Ever
Old 10-18-2003, 09:01 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered User
 
todwic's Avatar
 
Join Date: Feb 2002
Location: 3rd plane of Hades
Posts: 2,502
Garage
Send a message via AIM to todwic Send a message via Yahoo to todwic
Quote:
Originally posted by nynor
ok, my bad... it is in the block, technically, about 1 centimeter below the head. however, everything else i stated is correct, regarding the temperature being the temp of the water, because the sender is on the outside of the block with a water jacket between the sender and the actual source of the heat. i apologize for my one centimeter mistake.

agreed
__________________
*Disclaimer: The person above is actually dumber than he appears.
my web site Torque values maintainance and repairs lots of my rebuild pics weights and measurements
'84 944 auto/ps/ac/cc
'86 951
Providing ignorance one post at a time.
Old 10-18-2003, 04:34 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
winter-hater club member
 
nynor's Avatar
 
Join Date: Oct 2003
Location: salt lake city, utah
Posts: 24,705
hey, todwic, i think our cars are the same color, or very close... i was looking at your web page
__________________
2000 Corvette - ????, 2007 Buell XB9R - Astrid, 1996 Discovery - Piglet, 2000 Forester

"COOL PRIUS!" - Nobody Ever
Old 10-19-2003, 06:30 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
todwic's Avatar
 
Join Date: Feb 2002
Location: 3rd plane of Hades
Posts: 2,502
Garage
Send a message via AIM to todwic Send a message via Yahoo to todwic
Hellbronze? I like it! Kinda ties in my location.

__________________
*Disclaimer: The person above is actually dumber than he appears.
my web site Torque values maintainance and repairs lots of my rebuild pics weights and measurements
'84 944 auto/ps/ac/cc
'86 951
Providing ignorance one post at a time.
Old 10-19-2003, 09:57 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 07:08 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2020 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.