Thread Rating:
  • 12 Vote(s) - 2.75 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Overheating & part number question
#11
(20-08-2012, 01:34 PM)Rustscrat Wrote:  Hi, something I noticed at the weekend, had the engine out to sort out a few things, put back in but forgot to plug in the water temp sender.
Immediately after the engine fired up the fan kicked in, temp gauge in red.
plugged it back in and after a few seconds everything normalized and fan switched off.
Might be a good way to see if fans work whilst stood?
Also you may have a bad connection somewhere?
But if you say temp comes down after internal fan is switched on I would make sure the radiator fan works first. Confusedalut:

Hi Rustscrat,
I think we've found a good test here! The car's been stood overnight, so stone cold. Unplugged temp sender connection and started car - temp gauge straight to red/STOP light on and both fans running perfectly. Stopped engine, re-connected sender, started car and all ok.
I do have a digital multimeter but am more at home with spanners than "electrickery" so could you be kind enough to explain the testing procedure e.g expected ohms reading of sensor hot & cold also which wires to check for continuity at the ECU (I hopefully have attached some pictures!). And any other things to explore/test.
Many thanks,
Griff


Attached Files Thumbnail(s)
       
Landmark
Ex 1.4 Berlingo Multispace
Reply
#12
Have a look for this other sensor.(4020)
It's a blue one with only one wire coming from it. Make sure the connection is good and that it is in a sound state as it relies on a good earth. This is the temp warning signal. Think it should be on the same block as the other 2 wire sensor. Try disconnecting this and see what symptoms you get. :thumbsup:

[Image: muybz7.png]
2006 2.0hdi 600 with bench seat.  Cool
Reply
#13
Hi, Yes. Found it but it's well hidden and very awkward to get to. Looks like there is some sort of retaining clip so will have a go tomorrow with my work clothes on :-) and update you.
What is the reason for having 2 temp sensors?
Cheers
Griff
Landmark
Ex 1.4 Berlingo Multispace
Reply
#14
Don't quote me but from what I can make out this is like a "final warning" as this has an operating temp of 118'C. This is just a switch and not a sensor but seeing as it's connected to the temp sender it would be worth checking it out and seeing what symptoms you get when you disconnect it or short it to earth. :thumbsup:
2006 2.0hdi 600 with bench seat.  Cool
Reply
#15
Hi, Weather's dreadful outside so won't be doing it today (Bank Holidays!!)
Makes sense what you think - would probably activate fans if there was a total loss of coolant.
What is confusing me is the temp gauge is working so Temp sender must be ok. Also the curcuit from the ECU to the fans are ok from the above test.
Regards,
Griff
Landmark
Ex 1.4 Berlingo Multispace
Reply
#16
Hi Rustscrat,
Sorry for time in updating but I've not been in the car when it's showed the fault till yesterday.
Waiting at level crossing and guage went to red and STOP light came on. Got out and checked fans and both running. Temp then came straight down and everything normal. It's had fresh antifreeze in not long ago and system bled correctly. I'm begining to think it's just a Berlingo "gremlin" that we will have to live with!
Happy New Year
Griff
Landmark
Ex 1.4 Berlingo Multispace
Reply
#17
Hi I had problems with the temp etc, on my 1.4 petrol. Found a sensor which I did,nt know about but turns out that it put the fans on and off. I noticed a bad connector on it and problem similar to yours solved,

this thread explains

http://www.berlingoforum.co.uk/showthread.php?tid=2188
Reply
#18
With the fan on / off sensor checked and proved to be fully functional and given that your wife " always turns the internal heater on full when it happens and this appears to cool it " then it would seem to me that the radiator could be ready for replacement -does the heater work really well as in does it give out loads of heat and warm up quickly ?
I avoid spending money and don't advocate it very often but given it is a 2002 vehicle and the fact that you can buy a new radiator for £28.50 on Ebay you may find that replacement would be a good move.
Ebay number 281040317293
Ebay radiator
Reply
#19
Something that's more common to the warm climate of Australia, is fan motors giving grief. They go in two ways I know of - some wear out the brushes, others have the rear porous bush seize onto the armature shaft. At first they draw heavier current in operation, then eventally they can stop working altogether. I rate secondhand fan motors as an emergency purchases only, unless provenance is impeccable.

The other one I see a bit, is fan control relays eroding their contacts, leading to significant loss of current carrying ability. One of the three wears more than the others. Often the plastic relay case shows signs of overheating.

As the engine ECU almost certainly has solid state relay drivers in it, the best approach is to make sure relay stresses aren't excessive - better to replace a few external parts and uprate to thicker female spades, than to need an ECU repair.

Can't comment on the radiator blockage potential as our water is pretty soft. Most engines look new in the water passages even ten or twelve years in.
Reply
#20
(04-01-2013, 11:15 AM)geoff Wrote:  With the fan on / off sensor checked and proved to be fully functional and given that your wife " always turns the internal heater on full when it happens and this appears to cool it " then it would seem to me that the radiator could be ready for replacement -does the heater work really well as in does it give out loads of heat and warm up quickly ?
I avoid spending money and don't advocate it very often but given it is a 2002 vehicle and the fact that you can buy a new radiator for £28.50 on Ebay you may find that replacement would be a good move.
Ebay number 281040317293
Ebay radiator
Hi Geoff,
Yes heater works fine. What are you thinking?
Griff
Ps Addo This is England - we don't get hot :-)
Landmark
Ex 1.4 Berlingo Multispace
Reply


Forum Jump:


Users browsing this thread: 1 Guest(s)
[-]
Welcome
You have to register before you can post on our site.

Username:
  

Password:
  




[-]
Search
(Advanced Search)

[-]
Latest Threads
Grizz' Prozac for the Soul - Berlingo Multispace
Last Post: jj9
Today 07:30 PM
» Replies: 1315
» Views: 384543
EUR VAT on eBay goodies
Last Post: Rasputin
Today 07:24 PM
» Replies: 29
» Views: 2983
NO PRESSURE IN BRAKE PEDAL - SINKING TO FLOOR
Last Post: Trevor
Today 06:52 PM
» Replies: 2
» Views: 84
What's the stupidest (Car!) thing you've done?
Last Post: Argos69
Today 04:31 PM
» Replies: 10
» Views: 725
Ad Blue tank
Last Post: Roswell
Today 04:30 PM
» Replies: 3
» Views: 290
Wiper stalk with interval time control
Last Post: Zen_Speedmaster
Today 03:38 PM
» Replies: 0
» Views: 68
Changing the Torch Bulb to LEDs
Last Post: brodfather11
Today 02:47 PM
» Replies: 3
» Views: 315
Heated Seats - fitting an aftermarket kit - comp...
Last Post: Robho
Today 02:39 PM
» Replies: 23
» Views: 1932
Driving over a bridge will never be the same aga...
Last Post: ffrenchie
Today 10:17 AM
» Replies: 6
» Views: 605
handbreak fault
Last Post: brodfather11
Today 08:13 AM
» Replies: 1
» Views: 307

[-]
Recent Visitors
Locations of visitors to this page