Welcome to 911UK
The only place for Porsche, 911uk is the definitive enthusiast and resource site for the Porsche 911.
Registration is fast, simple and absolutely free, so join up today for full access to the site and benefit from latest member offers.

Porsche Classifieds
Porsche Buyers Guides
Sell Your Porsche on 911uk
Create a Free Classified Advert
Search Ads
Classified Adverts FAQ
Trade Classified Information
Buyer & Seller Fraud Protection
Consumer Rights Act
Pre Purchase Inspection (PPI)
Porsche Car Sourcing
Porsche Cars Wanted
Official Porsche Centre Reviews
Model
Stock
Porsche 911
991 : 2011- 23
997 : 2004- 80
996 : 1997-2005 44
993 : 1993-1998 6
964 : 1989-1993 3
Carrera 3.2 : 1983-1989 0
Carrera SC : 1977-1983 2
930 Turbo : 1975-1989 0
Early 911 : 1964-1977 3
Porsche Other Models
Classic : 1950-1965 0
Boxster : 1997- 19
Cayman : 2005- 11
Cayenne : 2003- 5
Macan : 2014- 1
Panamera : 2009- 1
912-914-924-928-944-968 0
959 - CarreraGT - RaceCar 1
Car Parts For Sale & Wanted
Other Items For Sale & Wanted
Wheels Tyres For Sale & Wanted
Number Plates For Sale Wanted

Porsche Services
Porsche Body Shop Repair
Paint Protection & Wrapping
Porsche Classic Insurance
Porsche Classic Parts
Porsche Classic Restoration
Porsche Design Collection
Porsche Engine Gearbox Rebuild
Porsche Heritage & History
Porsche News
Porsche Picture Gallery
Win a New Porsche 911

Porsche Parts
Body Parts, Body Styling
Brakes, Clearance
Electrical, Exhausts
Engine Cooling, Engine Electrical
Engine Rebuild, Heating Cooling
Interior Incar, Lighting
Rubber Seals, Service Parts
Steering, Suspension
Transmission, Workshop Tools
Early 911, 911 - 930, 928 - 968
964 - 993, 996 - 997, Boxster
Cayman, Cayenne, Panamera

Porsche Model Range
911 [991] 2011-Current
Porsche 911 [991]
911 [997] 2004-Current
Porsche 911 [997]
911 [GT] GT1-GT2-GT3
Porsche 911 [GT]
911 [996] 1997-2005
Porsche 911 [996]
911 [993] 1993-1998
Porsche 911 [993]
911 [RS] RS-RSR
Porsche 911 [RS]
911 [964] 1989-1993
Porsche 911 [964]
911 3.2 1983-1989
Porsche 911 3.2 Carrera
911 SC 1977-1983
Porsche 911 SC
911 [Early] 1964-1977
Porsche 911 [Early]
Boxster & Cayman
Porsche Boxster & Cayman
Cayenne & Panamera
Porsche Cayenne & Panamera

911uk Site Partners

Post new topic   Reply to topic
Author Message
pierrebear
Monza


Joined: 27 Sep 2017
Posts: 194
Location: Jersey


PostPosted: Sat Jul 21, 2018 4:46 pm    Post subject: Oil cooler fan issue? Car running hot Reply with quote

Hi everyone

Grateful for your thoughts or experience please...

Car normally never gets hotter than 9 o’clock on the oil temp gauge and always tends to stick around there or thereabouts. Today for the first time it went all the way to the top white line and even past it briefly - granted, I was stuck in terrible traffic. Then once I got moving it didn’t really fall below 10 o’clock - top white line.

I’ve checked out https://www.pelicanparts.com/techarticles/pcar_com/oil_cooler_troubleshoot2.htm and ruled out both the relay and the fuse. It’s also not the oil cooler as the driver’s side front wing is boiling hot whilst the passenger side is much cooler. I also didn’t feel any air from the bottom front vent on driver’s side when contrasting it with the passenger side (where there was plenty of air blowing with the aircon on full).

Any ideas as to fixes, prices and whether this is a specialist job would be much appreciated.

Thanks in advance.

Pierre
_________________
1995 Carrera 2 coupe manual, midnight blue
EX 2006 Carrera 4S coupe manual, basalt black
EX 2003 Mercedes SL500, green black (dark blue!)
 
  
View user's profile Send private message
   
Zingari
Donnington
Donnington


Joined: 25 Oct 2009
Posts: 12476
Location: Cheshire

1993 Porsche 964 Anniversary

PostPosted: Sat Jul 21, 2018 5:12 pm    Post subject: Reply with quote

Both the oil cooler and the AC condenser have two speed fans. Is the second high speed fan engaging on the cooler? Usually if the ballast resistor is knackered the fan defaults to high speed only as a fail safe.

There's a way of shorting the pins across the relay terminal for the oil fan to test both high and low speed. If these are OK then it could be something else. Has it got the right a mount of oil in it?

Have not got the terminal shorting details to hand but there should be a thread on here or on toreB site?
_________________
Alfa Romeo’s 4C is everything a Italian sports-car should be: it’s gorgeous to the point of pornography, distinctive enough that nobody will ever mistake it for a Porsche, handles like it’s on rails and steers like a kart.
 
  
View user's profile Send private message
   
pierrebear
Monza


Joined: 27 Sep 2017
Posts: 194
Location: Jersey


PostPosted: Sat Jul 21, 2018 5:33 pm    Post subject: Reply with quote

Thanks, Zingers. I was in too much of a flap earlier with one thing and another (not this!) to test both speeds on the fan but I’ll give it a go now - as I think I’ve mentioned before I’m a complete newbie at anything technical!

There ought to be the right amount of oil in there. It was only serviced by Northway a few weeks ago and is dry underneath.
_________________
1995 Carrera 2 coupe manual, midnight blue
EX 2006 Carrera 4S coupe manual, basalt black
EX 2003 Mercedes SL500, green black (dark blue!)
 
  
View user's profile Send private message
   
Zingari
Donnington
Donnington


Joined: 25 Oct 2009
Posts: 12476
Location: Cheshire

1993 Porsche 964 Anniversary

PostPosted: Sat Jul 21, 2018 8:30 pm    Post subject: Reply with quote

Have a read here and it explains the terminals to short from the relay https://p-car.com/diy/fan/

Sounds to me your high speed fan is not working as the heat through the vent when it runs will be like being in the wake of a jet engine what
_________________
Alfa Romeo’s 4C is everything a Italian sports-car should be: it’s gorgeous to the point of pornography, distinctive enough that nobody will ever mistake it for a Porsche, handles like it’s on rails and steers like a kart.
 
  
View user's profile Send private message
   
ollster
Montreal


Joined: 10 Jun 2009
Posts: 519
Location: Sheffield


PostPosted: Sat Jul 21, 2018 9:03 pm    Post subject: Reply with quote

The low speed fan wasn’t working on mine which I was told would be the ballast resister or the ccu. After testing everything i narrowed it down to a bad relay, if I took the cover off the relay and manually operated the low speed contacts it worked fine but not when checking with the scan tool test sequence. I swapped the relay with the rear blower fan (which I had changed a couple of years ago when it fused permintaly on!) and it all worked properly confiming a bad relay was the cause. Maybe a bit of a random one but worth checking and cheap and easy fix Thumb
 
  
View user's profile Send private message
   
pierrebear
Monza


Joined: 27 Sep 2017
Posts: 194
Location: Jersey


PostPosted: Sat Jul 21, 2018 9:40 pm    Post subject: Reply with quote

I think the fan is not working at all - I tried swapping the AC and oil cooler relays but to no avail. Definitely not the thermostat as the wing gets hot when up to temp. Hopefully not too expensive a fix but think it might be above my head and worth booking in to the local Indy - not much choice over in Jersey but I just can’t justify the additional time and money to get the car over to Blighty.
_________________
1995 Carrera 2 coupe manual, midnight blue
EX 2006 Carrera 4S coupe manual, basalt black
EX 2003 Mercedes SL500, green black (dark blue!)
 
  
View user's profile Send private message
   
ToreB
Approved Trader


Joined: 13 May 2010
Posts: 561
Location: Oslo, Norway


PostPosted: Sun Jul 22, 2018 7:11 am    Post subject: Reply with quote

The fan resistors are a known problem. I would suggest to change both the condenser and oil cooler fan resistors while the front fender is off.

I would suggest to do a OBD diagnosis of the Climate Control Unit to reveal any problems with the oil temperature sensor.

Here's details on the how to test and repair the fans:
https://www.bergvillfx.com/fanresistor


Cheers,
Tore
_________________
'95 993 C4

Bergvill F/X
Porsche electronics specialists, products and repair services.
 
  
View user's profile Send private message Send e-mail Visit poster's website
   
pierrebear
Monza


Joined: 27 Sep 2017
Posts: 194
Location: Jersey


PostPosted: Mon Jul 23, 2018 4:54 pm    Post subject: Reply with quote

Thanks, Tore! I think all of this has (predictably) gone over my head. I've booked it in with a local indy to diagnose the problem tomorrow morning and work out what parts are needed...will hopefully get sorted very shortly and I'll just have to avoid all traffic jams in the interim frustrated
_________________
1995 Carrera 2 coupe manual, midnight blue
EX 2006 Carrera 4S coupe manual, basalt black
EX 2003 Mercedes SL500, green black (dark blue!)
 
  
View user's profile Send private message
   
pierrebear
Monza


Joined: 27 Sep 2017
Posts: 194
Location: Jersey


PostPosted: Tue Jul 24, 2018 3:57 pm    Post subject: Reply with quote

Update (with huge thanks to the ever-brilliant Ray at Northway Porsche who helped over the telephone): fan was not engaging at all, whether at high or low speed. The mechanic jumped the circuits and confirmed that the high speed only was was engaging, meaning that the ballast resistor needs doing (relatively common, I gather?)

The fan is not coming on at all though, meaning that the fan switch next to the oil radiator also needs doing (I gather Dont know )

Anyway, parts ordered and should hopefully be back to normal service very shortly. Thank you all for your comments and advice!
_________________
1995 Carrera 2 coupe manual, midnight blue
EX 2006 Carrera 4S coupe manual, basalt black
EX 2003 Mercedes SL500, green black (dark blue!)
 
  
View user's profile Send private message
   
ToreB
Approved Trader


Joined: 13 May 2010
Posts: 561
Location: Oslo, Norway


PostPosted: Wed Jul 25, 2018 6:13 am    Post subject: Reply with quote

I seldom see problems with the oil temperature sensor, (it's not a switch) but this could of course be such a case. The way to go would be to measure the resistance of the sensor, and do a OBD diagnostic. The Climate Control Unit will produce a fault code if the sensor is not working. The measured temperature will also be possible to read out with the OBD tool.
Cheers,
Tore
_________________
'95 993 C4

Bergvill F/X
Porsche electronics specialists, products and repair services.
 
  
View user's profile Send private message Send e-mail Visit poster's website
   
MaKSiNG
Silverstone


Joined: 03 Jul 2005
Posts: 121
Location: East Germany


PostPosted: Thu Sep 06, 2018 5:02 pm    Post subject: Reply with quote

pierrebear wrote:
Update (with huge thanks to the ever-brilliant Ray at Northway Porsche who helped over the telephone): fan was not engaging at all, whether at high or low speed. The mechanic jumped the circuits and confirmed that the high speed only was was engaging, meaning that the ballast resistor needs doing (relatively common, I gather?)

The fan is not coming on at all though, meaning that the fan switch next to the oil radiator also needs doing (I gather Dont know )

Anyway, parts ordered and should hopefully be back to normal service very shortly. Thank you all for your comments and advice!


Hey Pierre,

Did you get this sorted?
What was it?

Thanks,
MaKS
 
  
View user's profile Send private message
   
pierrebear
Monza


Joined: 27 Sep 2017
Posts: 194
Location: Jersey


PostPosted: Thu Sep 06, 2018 6:30 pm    Post subject: Reply with quote

Hi MaKS - did get it sorted, thanks. Ballast resistor was definitely shot so got that replaced. Additionally thermostat didn’t appear to be opening because of something stuck in there - black plastic? Anyway, I did the repair as suggested in another thread by decgraham and all now working perfectly.
_________________
1995 Carrera 2 coupe manual, midnight blue
EX 2006 Carrera 4S coupe manual, basalt black
EX 2003 Mercedes SL500, green black (dark blue!)
 
  
View user's profile Send private message
   
ballcock
Sepang


Joined: 21 Jul 2008
Posts: 2853
Location: Dublin

1996 Porsche 993 Carrera 2

PostPosted: Sun Sep 09, 2018 4:56 pm    Post subject: Reply with quote

Hi there PB,
Would you possibly put a pic up on the thread of your oil temp gauge when it’s currently running at its hottest?
It would be a good reference pic seeing as you’ve got all the oil cooling up front sorted.
Thanks!
B
(Mine sits JUST above the 9 o clock position when fully hot, I often wondered if it should be lower!)
_________________
'96 Iris C2 vario manual coupe, Koni FZD's/M033's RSR's and HID's.
'83 W460 LWB G Wagen updated with OM602 engine and 6 speed 'box ...My daily driver

Ex. '99 996 C2 manual coupe.
 
  
View user's profile Send private message
   
pierrebear
Monza


Joined: 27 Sep 2017
Posts: 194
Location: Jersey


PostPosted: Mon Sep 10, 2018 1:26 am    Post subject: Reply with quote

Hi ballcock

I’m really confused to be fair...here’s a pic after I’d just driven from Poole to Windsor going at a fair rate of knots the whole way earlier tonight. It never reached 9 o’clock but I think that was because of the amount of air it was getting fed.

I’ll try to upload another one once I do get stuck in some traffic whixh shouldn’t take too long!! Normally runs at 9pm exactly.
_________________
1995 Carrera 2 coupe manual, midnight blue
EX 2006 Carrera 4S coupe manual, basalt black
EX 2003 Mercedes SL500, green black (dark blue!)
 



C57BDC4C-EB3D-4633-8C23-09CABBD520B4.jpeg
 Description:
 Filesize:  467.37 KB
 Viewed:  607 Time(s)

C57BDC4C-EB3D-4633-8C23-09CABBD520B4.jpeg


  
View user's profile Send private message
   
ballcock
Sepang


Joined: 21 Jul 2008
Posts: 2853
Location: Dublin

1996 Porsche 993 Carrera 2

PostPosted: Tue Sep 11, 2018 2:51 am    Post subject: Reply with quote

Thanks PB,
Yes the pic I’m interested in is indeed when you’ve been stuck in traffic and the needle has hit its max temp, thanks!
_________________
'96 Iris C2 vario manual coupe, Koni FZD's/M033's RSR's and HID's.
'83 W460 LWB G Wagen updated with OM602 engine and 6 speed 'box ...My daily driver

Ex. '99 996 C2 manual coupe.
 
  
View user's profile Send private message
   
ollster
Montreal


Joined: 10 Jun 2009
Posts: 519
Location: Sheffield


PostPosted: Tue Sep 11, 2018 6:37 am    Post subject: Reply with quote

Mine runs at about the same point pictured when at normal operating temp. It will creep up to 9 o’clock in traffic on a hot day (first fan point) and I have never seen it at the 10 o’clock mark as the second fan kicks in before that. It’s all relative though as this summers 25-30 degree temps saw the car spending more time around 9 o’clock and much longer to reduce to the 8 o’clock mark when rolling which is absolutely normal.

I wouldn’t even be concerned if it went above the 10 o’clock mark on a very hot day if the car had heat soaked in traffic for a long time as long as the fan was running and it didn’t enter the red. I would just take it easy when rolling until temps dropped to the 9 o’clock level.
 
  
View user's profile Send private message
   
pierrebear
Monza


Joined: 27 Sep 2017
Posts: 194
Location: Jersey


PostPosted: Thu Sep 13, 2018 8:51 am    Post subject: Reply with quote

As requested - this was after a spirited drive from Wiltshire to London and getting stuck in some traffic towards the end which took me up to full temp.

Anything higher than this and I think something isn’t working right in the oil temp system as it were. That having been said, one thing that I’ve surmised is that the system keeps on working to one degree or another and it is virtually impossible to completely overheat the car.

Pic attached.
_________________
1995 Carrera 2 coupe manual, midnight blue
EX 2006 Carrera 4S coupe manual, basalt black
EX 2003 Mercedes SL500, green black (dark blue!)
 



52F12FAE-2D64-44F4-B4C3-1FB49BF8138C.jpeg
 Description:
 Filesize:  393.09 KB
 Viewed:  365 Time(s)

52F12FAE-2D64-44F4-B4C3-1FB49BF8138C.jpeg


  
View user's profile Send private message
   
ollster
Montreal


Joined: 10 Jun 2009
Posts: 519
Location: Sheffield


PostPosted: Thu Sep 13, 2018 9:27 am    Post subject: Reply with quote

Like I said on a 30deg plus day it’s normal to see higher temps than above with everything functioning as normal as it’s all relative. Remember these cars will happily run in Death Valley where I would expect they will hover around the above temp even when rolling.
 
  
View user's profile Send private message
   
ballcock
Sepang


Joined: 21 Jul 2008
Posts: 2853
Location: Dublin

1996 Porsche 993 Carrera 2

PostPosted: Thu Sep 13, 2018 3:18 pm    Post subject: Reply with quote

Thanks so much for following up with the pic.
I’m not sure if mine is that much different, perhaps a smidge higher after lots of sitting in traffic.
Your idle revs are lower than mine though!
_________________
'96 Iris C2 vario manual coupe, Koni FZD's/M033's RSR's and HID's.
'83 W460 LWB G Wagen updated with OM602 engine and 6 speed 'box ...My daily driver

Ex. '99 996 C2 manual coupe.
 
  
View user's profile Send private message
   
decgraham
Suzuka


Joined: 17 Sep 2008
Posts: 1209
Location: Spain


PostPosted: Thu Sep 13, 2018 5:06 pm    Post subject: Reply with quote

When I was in Kuwait the summer temperatures would reach 52C, my car never went above the 9 O'clock mark, even stuck in traffic.

+1 for ballcock your revs at tick over look a little low, should be 800 - 850 rpm.

ATB Smile
_________________
1995 993 C2 Cab TipS in Guards Red
 



800 RPM.jpg
 Description:
 Filesize:  601.95 KB
 Viewed:  276 Time(s)

800 RPM.jpg


  
View user's profile Send private message
   
Display posts from previous:   
Post new topic   Reply to topic   All times are GMT - 12 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
You cannot attach files in this forum
You can download files in this forum
You cannot post calendar events in this forum