Show full size 924Board.org
Discussion Forum of 924.org
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
 Technical FAQ924 FAQ (Technical)   Technical924 Technical Section   Jump to 924.org924.org   Jump to PCA 924 Registry924 Registry

Overheat?
Goto page 1, 2  Next
 
Post new topic   Reply to topic    924Board.org Forum Index -> 924S Discussions
View previous topic :: View next topic  
Author Message
FFNPMcD  



Joined: 15 Aug 2013
Posts: 19
Location: Richmond, Va.

PostPosted: Mon Sep 09, 2013 8:09 am    Post subject: Overheat? Reply with quote

Quick question (maybe) about the cooling of my 87 924s.

When my vehicle is in motion..My temperature gauge tends to run in the middle. From time to time (warm, hot, or cold weather) it will bump up to about 3/4 before it quickly drops down to a 1/4 and levels off again at 1/2.

While in the garage I had the hood up and witnessed the cooling fans engage when the temp of the engine got to a little over a 1/2. (so I know they at least work)

Today I stopped at an ATM machine. (disengaged the transmission) and got my coin. When I looked down the temperature was climbing over 3/4. As soon as i put vehicle in 1st. the temperature dropped down to 1/2. (I see this happen from time to time when car is at idle, but it doesn't happen all the time ) (Outside temperature was 76F)

I have read that when my key is in the ACC position the cooling fans should cut on.. tried today and they donít.

Any recommendations on where to check for a problem?
Solenoid, thermostat ect.?

Previous owner has receipts for new water pump and coolant hoses. (But donít really know the reputation of the fella that did the work)

I appreciate any help you can provide.

Neill
_________________
1987 924s
Back to top
View user's profile Send private message
edredas  



Joined: 09 Dec 2004
Posts: 855
Location: Charlotte, NC

PostPosted: Mon Sep 09, 2013 11:28 am    Post subject: Reply with quote

If the contacts on the back of the gauge are dirty or corroded the needle will jump all over the place, so I would check those first.
_________________
'86 944 -Garnet, Fully loaded, Koni suspension
'87 924S -Red, 300hp 951 swap
'87 924S -Red, New Project
'87 924S -White, Automatic
'88 924S -Red, Daily Driver, Bone stock
'93 Mx6 -White, Megan Racing suspension
Back to top
View user's profile Send private message Send e-mail AIM Address
FFNPMcD  



Joined: 15 Aug 2013
Posts: 19
Location: Richmond, Va.

PostPosted: Mon Sep 09, 2013 10:20 pm    Post subject: Reply with quote

I noticed today that the fans don't seem to cut on at idle. (Well didnt this morning after 25 minute commute home). I would guess they intermittently cut on during normal driving giving me the jumps in temperature.

Solenoid for fans maybe?
_________________
1987 924s
Back to top
View user's profile Send private message
edredas  



Joined: 09 Dec 2004
Posts: 855
Location: Charlotte, NC

PostPosted: Tue Sep 10, 2013 5:06 am    Post subject: Reply with quote

The fans are triggered by a thermo switch in the radiator.

The fans should only come on when the gauge reads slightly past the third mark when idling.

The fans should never come on when driving and the gauge should stay steady at the second mark when in motion.

If the gauge is bouncing around, then it's possible that it's readings are incorrect and the fans might be working fine but the car isn't as hot as the gauge suggest, so try cleaning the grounds.

If the fans are not coming on at idle, then check the spade terminals on the thermo switch as they get loose over time.
_________________
'86 944 -Garnet, Fully loaded, Koni suspension
'87 924S -Red, 300hp 951 swap
'87 924S -Red, New Project
'87 924S -White, Automatic
'88 924S -Red, Daily Driver, Bone stock
'93 Mx6 -White, Megan Racing suspension
Back to top
View user's profile Send private message Send e-mail AIM Address
Paul  



Joined: 02 Nov 2002
Posts: 9344
Location: Southeast Wisconsin

PostPosted: Tue Sep 10, 2013 12:35 pm    Post subject: Reply with quote

Sounds normal.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Back to top
View user's profile Send private message Send e-mail
FFNPMcD  



Joined: 15 Aug 2013
Posts: 19
Location: Richmond, Va.

PostPosted: Wed Sep 11, 2013 6:30 am    Post subject: Reply with quote

Is there an easy way (or a write up) to get to the back of the gauge? Im assuming I will have pull the dash?

Thanks for all the help guys.

Neill
_________________
1987 924s
Back to top
View user's profile Send private message
FFNPMcD  



Joined: 15 Aug 2013
Posts: 19
Location: Richmond, Va.

PostPosted: Wed Sep 11, 2013 6:30 am    Post subject: Reply with quote

Is there an easy way (or a write up) to get to the back of the gauge? Im assuming I will have pull the dash?

Thanks for all the help guys.

Neill
_________________
1987 924s
Back to top
View user's profile Send private message
Paul  



Joined: 02 Nov 2002
Posts: 9344
Location: Southeast Wisconsin

PostPosted: Wed Sep 11, 2013 9:35 am    Post subject: Reply with quote

Stop, your car is behaving normally.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Back to top
View user's profile Send private message Send e-mail
fiat22turbo  



Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR

PostPosted: Wed Sep 11, 2013 9:44 am    Post subject: Reply with quote

Make sure your under engine tray is in place (should run from the bottom of the radiator to the front crossmember).

Otherwise, it sounds like it is working like it should.
_________________
Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)
Back to top
View user's profile Send private message Visit poster's website
edredas  



Joined: 09 Dec 2004
Posts: 855
Location: Charlotte, NC

PostPosted: Wed Sep 11, 2013 10:21 am    Post subject: Re: Overheat? Reply with quote

Guys, he has said twice that that the temperature is jumping around while the car is in motion. That is not normal.
_________________
'86 944 -Garnet, Fully loaded, Koni suspension
'87 924S -Red, 300hp 951 swap
'87 924S -Red, New Project
'87 924S -White, Automatic
'88 924S -Red, Daily Driver, Bone stock
'93 Mx6 -White, Megan Racing suspension
Back to top
View user's profile Send private message Send e-mail AIM Address
Paul  



Joined: 02 Nov 2002
Posts: 9344
Location: Southeast Wisconsin

PostPosted: Wed Sep 11, 2013 10:36 am    Post subject: Reply with quote

He said:

When my vehicle is in motion..My temperature gauge tends to run in the middle. From time to time (warm, hot, or cold weather) it will bump up to about 3/4 before it quickly drops down to a 1/4 and levels off again at 1/2.

This sounds like the fans are cycling on and off probably while he is driving slowly at low rpms. Sounds normal especially if it is an automatic.
_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Back to top
View user's profile Send private message Send e-mail
edredas  



Joined: 09 Dec 2004
Posts: 855
Location: Charlotte, NC

PostPosted: Wed Sep 11, 2013 10:47 am    Post subject: Reply with quote

In his second post he referred to it as "normal driving". When my grounds were dirty my car did the same thing, and I even pulled over once because the gauge was in the red, but the engine was still ice cold... took only a few minutes to fix and it's been fine for 5 years now.
_________________
'86 944 -Garnet, Fully loaded, Koni suspension
'87 924S -Red, 300hp 951 swap
'87 924S -Red, New Project
'87 924S -White, Automatic
'88 924S -Red, Daily Driver, Bone stock
'93 Mx6 -White, Megan Racing suspension
Back to top
View user's profile Send private message Send e-mail AIM Address
Paul  



Joined: 02 Nov 2002
Posts: 9344
Location: Southeast Wisconsin

PostPosted: Wed Sep 11, 2013 11:24 am    Post subject: Reply with quote

Which grounds did you clean to resolve the issue?


_________________
White 87 924S "Ghost"
Silver 98 986 3.6l 320 HP "Frank N Stein"
White 01 986 "Christine"
Polar Silver 02 996TT. "Turbo"
Owned and repaired 924s since 1977
Back to top
View user's profile Send private message Send e-mail
edredas  



Joined: 09 Dec 2004
Posts: 855
Location: Charlotte, NC

PostPosted: Wed Sep 11, 2013 11:29 am    Post subject: Reply with quote

Haha, actually those were perfect when I removed my 924S engine...

I cleaned the ones on the back of the gauge and the crown ring up behind the fuse box. They didn't look dirty, but did the trick!
_________________
'86 944 -Garnet, Fully loaded, Koni suspension
'87 924S -Red, 300hp 951 swap
'87 924S -Red, New Project
'87 924S -White, Automatic
'88 924S -Red, Daily Driver, Bone stock
'93 Mx6 -White, Megan Racing suspension
Back to top
View user's profile Send private message Send e-mail AIM Address
FFNPMcD  



Joined: 15 Aug 2013
Posts: 19
Location: Richmond, Va.

PostPosted: Wed Sep 11, 2013 12:59 pm    Post subject: Reply with quote

Thanks for all the responses guys! I'll start with the gauge, to see if that changes anything.
Trying to get used to 'normal' in the 924. Was warned by friends and previous owner that overheating the 924 will cause sever damage. I'm probably just overly sensitive to the motion of the temp gauge. Worries me when I see it about to hit the red at a stop light. (I usually take it out of gear so I'm not holding the clutch the entire time I wait). But if that's normal.. I'm good with it! The less work the more I get to enjoy it!

Thanks again,
Neill
_________________
1987 924s
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    924Board.org Forum Index -> 924S Discussions All times are GMT + 11 Hours
Goto page 1, 2  Next
Page 1 of 2

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group