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PostPosted: Fri Nov 07, 2014 6:36 pm 
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Joined: Wed Oct 30, 2013 8:12 pm
Posts: 154
Drives: Cinquecento sporting(POLLY)
Just checking this is normal behaviour:

Car takes about 15-20 mins to warm up to normal temp whilst driving.

While driving around b roads doing between 30-50 the temperature will stay at about the 1st thick mark after 50 on the gauge.

If I drive on a motorway at 70ish the temperature will sit at around the thin mark before 90 in the gauge.

If I sit still the temperature will reach around 90 after about 5 mins once warmed up, then the fan will cycle on and off every minute or so to maintain temp.

If I drive off, the temp will drop back to the levels mentioned before within a couple of minutes.


Only really noticed this now it is getting cold outside. Heating in the car is fine, I start to get heat after about 5-10 mins from cold.


Is this normal behaviour? My Toyota is at operating temp within about 5 mins from cold and only fluctuates a few degrees whatever time of year.


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PostPosted: Sat Nov 08, 2014 3:12 am 
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Joined: Thu Mar 22, 2007 9:20 pm
Posts: 10660
Location: Teesside
Drives: Panda 100hp
That's about normal. They can take a while to warm up on a cold day if driving slowly.

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PostPosted: Sat Nov 08, 2014 1:49 pm 
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Joined: Wed Oct 30, 2013 8:12 pm
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Drives: Cinquecento sporting(POLLY)
Thanks. I won't worry about it then. Thought thermostat, but it's not really thermostat symptoms.

Want to get everything spot on before the trackday I have booked in december :D


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PostPosted: Sat Nov 22, 2014 8:38 pm 
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Joined: Wed Oct 30, 2013 8:12 pm
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Drives: Cinquecento sporting(POLLY)
No it is not meant to be like that. Slapped a new thermostat in today and it's sorted. Heats up fully as it should do and doesn't vary too much.


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PostPosted: Sun Nov 23, 2014 3:43 am 
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Joined: Fri Jun 26, 2009 1:59 am
Posts: 757
Location: Roundabout City (Milton Keynes)
Drives: Seicento Sporting
after new thermostat and sitting still, does fan still do the 1min on 1 min off thing, or does the fan seem to do its job better?

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PostPosted: Sun Nov 23, 2014 11:29 am 
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Joined: Wed Oct 30, 2013 8:12 pm
Posts: 154
Drives: Cinquecento sporting(POLLY)
Still does the 1 min on, 1 min off thing. Before I changed it it took ages to even get it anywhere near the temp to bring the fan on!!!

It's so cheap and easy to change its hardly worth thinking about if you think it's dodgy.


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PostPosted: Wed Nov 26, 2014 6:03 pm 
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Joined: Tue Aug 28, 2007 5:28 pm
Posts: 298
Location: NOTTINGHAM
Drives: Schumacher
Fitting a new radiator can help with heat dissipation if the old rad has some scale/contamination build up internally. Even dirt stuck on/between the fins can insulate the thing and reduce efficiency. They are not exactly large on these cars to start with. Seicento MPI ones are a bit bigger than Cinquecento/Seicento SPI, so that says something.


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PostPosted: Wed Nov 26, 2014 8:54 pm 
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Joined: Wed Oct 30, 2013 8:12 pm
Posts: 154
Drives: Cinquecento sporting(POLLY)
i have one thats only a little larger on my starlet turbo running 200bhp and it copes fine in the middle of summer. im sure the Cinquecento one is more than adequate in good condition :wink:

my issue was that it was over-cooling. the stat must have opened sooner than it should so it would never get up to temp. its now perfect. most cars cooling fans cycle on and off every minute or so when at that temperature and your not moving. as long as its not constantly on or overheating you have nothing to worry about :)


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