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Aug 24th, 2023
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Joined: Apr 2014
Posts: 33
Just Getting Started
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OP
Just Getting Started
Joined: Apr 2014
Posts: 33 |
My Plus 4 has just had a new radiator fitted (from Williams) and everything looks fine. Running temperature is usually about 90-95 deg C as indicated by the temp gauge and I can hear the cooling fan cutting in and out.
Went out a day or two ago for the first proper drive of the year and did about 150 miles without any problem. Then I spent half an hour in heavy city traffic and the temperature rose to an indicated 120 deg C. The only way to get the temperature down was to turn the heater on full. After running outside the city for a while the temperature came back to normal. No sign of water leaks when I got home. When the engine is just ticking over the fan still operates at about 95deg C.
There are two relays for the fan – marked high and low on the wiring diagrams I found on TM – which I guess relate to fan speed. Is that right? And Is it likely that the high relay has failed? The relays are Tyco 0-1432793-1.
All suggestions gratefully received.
Plus 4 2-seater / 2.0 Duratec / 2011 / Amazon Green
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Joined: Dec 2008
Posts: 21,871 Likes: 168
Roadster Guru Member of the Inner Circle
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Roadster Guru Member of the Inner Circle
Joined: Dec 2008
Posts: 21,871 Likes: 168 |
Yes - two relays. It looks like the high speed relay may have failed. Try a substitution, but note that you need a relay with diode protection.
Also check the coolant level when cold.
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Joined: Dec 2009
Posts: 35,791 Likes: 471
Tricky Dicky Member of the Inner Circle
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Tricky Dicky Member of the Inner Circle
Joined: Dec 2009
Posts: 35,791 Likes: 471 |
It wouldn't be the first time a garage has missed a connection off the fan - it maybe worth checking first if you have not already done so.
2009 4/4 Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Connaught Green +8 prev
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Joined: Apr 2014
Posts: 33
Just Getting Started
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OP
Just Getting Started
Joined: Apr 2014
Posts: 33 |
Dave, Richard
Coolant and fan connections all look OK. Spares available from RS at 2.55 plus free delivery ( no connection with me!) - I will replace both relays and have a spare to be on the safe side.
http://uk.rs-online.com/web/p/products/7826953/?cm_mmc=UK-PPC-_-google-_-3_UK_EN_M_IP_and_E_Broad-_-te_connectivity|non_latching_relays&mkwid=s1dhSYO6W_dc|pcrid|78791998844|pkw|%2B1432793+%2B1|pmt|b|prd|&gclid=CIby5qKn3ssCFQWfGwodW50MFw#
There is a data sheet on this webpage which looks OK to me!
Thanks for your help
Plus 4 2-seater / 2.0 Duratec / 2011 / Amazon Green
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Joined: Dec 2009
Posts: 35,791 Likes: 471
Tricky Dicky Member of the Inner Circle
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Tricky Dicky Member of the Inner Circle
Joined: Dec 2009
Posts: 35,791 Likes: 471 |
Good luck Conrad, Just reread your initial enquiry and noted the fan runs, sorry anno domini catching up.
2009 4/4 Henrietta
1999 Indigo Blue +8
2009 4/4 Sport Green prev
1993 Connaught Green +8 prev
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Joined: Apr 2014
Posts: 33
Just Getting Started
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OP
Just Getting Started
Joined: Apr 2014
Posts: 33 |
It comes to us all - I've already got it - that's why I have a mog!
Plus 4 2-seater / 2.0 Duratec / 2011 / Amazon Green
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Joined: May 2014
Posts: 5,110 Likes: 56
Black Rat Charter Member
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Black Rat Charter Member
Joined: May 2014
Posts: 5,110 Likes: 56 |
I once spent nearly 2 K trying to cure the overheating on an Alfa only to discover it was a malfunctioning Temp Gauge. get an infra red thermometer (eBay about a tenner) and check the temp on the top hose next time it happens before you spend too much money.
Keith
2013 narrow bodied + 4 Ruby.
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