Clubjazz - Honda Jazz & HR-V Forums
Honda Jazz Forums => Honda Jazz Mk2 2008-2015 => Hybrid Mk2 2011-2015 => Topic started by: guest5251 on September 30, 2015, 08:36:49 PM
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tonight i used the jazz only to go about 1 mile ,the outside temp was 16 deg's
when i was waiting to check the tyre pressures the cooling fan kept
cutting in & out is this normal for the jazz after such a short run,i am still to check
the coolant reservoir level with the system being pressurised.
has anyone else noticed this.
the car had been switched off for about 2 hrs since its last journey.
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have you got the a/c on? if it is then that's ok its meant to do that
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yes we have aircon but it was turned off
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How long were you waiting in the queue and was the engine running? I wouldn't expect the engine to have reached the full operating temperature in only one mile but if you were in the queue for some minutes with the engine running then it wouldn't be getting any natural ventilation and need to use the fan. The hybrid has auto idle stop but there are conditions when it doesn't activate.
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a couple of minutes i had been waiting in the queue, initially the stop / start system cut in but then in true honda fashion the system stopped working and the engine restarted if the stop / start system worked the engine wouldn't of had to run so therefore no cooling fan would be needed, i have just spoken to honda and they are said its normal ,but i dont believe them ,right now i am on edge about it as i feel it isn't right ,its my partners car and she always has our toddler with her so the car has to be reliable,i feel the need to get rid and buy another brand
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The auto-stop disabling itself when you are in a stop-start queue is normal for the hybrid. Whether it is necessary is another matter. I think the car decides that one of the batteries isn't completely charged and therefore has to run the engine to try to top it up. It's one of the features of Honda's hybrid system that you have to get used to.
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i am use to hybrid all be it from lexus,and i am seriously considering going to toyota
to buy a yaris hybrid for kath instead of this car,as the coolant loss is of concern to me,
honda say this is normal but coolant loss isn't the norm,and the warning light for overheating
when that comes on means your in trouble.
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you shouldn't use a drop of coolant, at cold it should be at the max mark then rise a couple of inches above max when driving and then back down to max when cold if it is filled any more than that it will come out of the top of the overflow bottle till it reaches the correct level
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My hybrid Jazz never used any coolant in over four years. Just make sure the overflow bottle is above Min when the engine is cold.
If you are getting an engine overheating warning light (which I've never seen on a Jazz) then something is wrong with the cooling system and this will trigger side effects such as the auto idle stop not working.
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we haven't had the warning light on ,but coolant reservoir had lost some coolant and the fan last night just didn't want to stop ,nearly solved our issues today but the boot on the yaris hybrid is too small so we are stuck with the jazz for the time being
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I am starting to wonder if the coolant isn't circulating properly due to the water pump or thermostat malfunctioning. This could easily trigger excess fan activity if the temperature sensor is in the engine block although the water in the radiator isn't that hot.
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i have just used my obdii adapter which gives you the coolant temperrature
and at 85' with the car standing still the cooling fan cuts in ,and that i am sure is way to early
id be expecting the fan to cut in around 97' - 100' with the thermostat having a
operating temperature of around 92'
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If the fan is operating before the thermostat opens then something's amiss. However, what is the correct operating temperature for the thermostat? http://www.fitfreak.net/forums/1st-generation-gd-01-08/80555-anyone-install-warmer-thermostat.html (http://www.fitfreak.net/forums/1st-generation-gd-01-08/80555-anyone-install-warmer-thermostat.html) suggests about 180F (which is 82C). I would have expected the trigger temperature for the fan to be somewhat higher so that the radiator has opportunity to do some natural cooling before the fan cuts in.
An internet search suggests that the thermostat for the Jazz should be rated at 78C to 82C (the temperature at which it starts to open). In this case you've probably got a sticking thermostat. The old-fashioned test is to put in a pan of water on a cooker and heat it up. You will also need a thermometer reading up to 100C.
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its still under warranty and on the 10th its back into honda for its service,85' to me isn't letting the engine run up to temp ,last night the fan cut in for a short time cut out then both fans cut in sitting on the drive but the temp was still 85' ,there is definately something amiss with this car.
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Ask to talk through the issue with the service manager, then put your concerns in writing to Honda & the dealership, these days it pays to log your concerns. Dealers in general dont care to trace/rectify issues just book time to charge the customer.
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on saturday i will be talking through it with them at great lengths,today the passenger electric mirror went mad and folded in by itself ,kath had to fold the drivers mirror in then open them both,its a wierd car with a mind of its own, i wonder what may happen on a full moon or halloween ,its scarey thinking about it.
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My hybrid Jazz was very well behaved and predictable, unlike my new Mk 3 (to be honest, it's probably also very predictable once I've figured out all the factors that influence its actions but I don't think that will make it well behaved).
Perhaps Honda were quietly testing out features for the new Jazz in your hybrid.
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does anyone know at what temperature the cooling fan cuts in,as my dealer holdcroft honda cheshire oaks
are telling me that they dont know and also HONDA UK dont know, i find that hard to accept and believe.
they tell me the ecu controls the fan this is why the temperature is unknown but a temperature still needs to be programmed for the system to operate so a temperature should be known / available.
i hope someone can help me with this issue.
HONDA the power of dreams ,umm i dont think so.
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The 85°C reported by your OBDII adapter for the fan on temperature very likely represents what is programmed into the ECU. That 85°C may be a very conservative setting is another matter.
Did you get the garage to check that the water is circulating correctly including the thermostat operation (they should know the correct working temperature for that component) and the water pump? If the water isn't circulating properly then the fan (if the sensor is in the engine block) will come on sooner than it otherwise would. If the sensor is in the radiator then it means that the natural air cooling isn't sufficient. Does the radiator core need cleaning? It's time to check if the temperature sensor is in the radiator.
Either way, the fan coming on under the conditions you originally ementioned appears to be abnormal. Perhaps you need to rephrase your question to the dealer.
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the 85' is the actual coolant temperature as you can see the temperature starting low and then rise .
today i asked them what the operating temp is for the thermostat i was told they didnt have that info
so i said i would wait for the manager ,whilst waiting they somehow found the operating temp of the thermostat
it opens @ 76' c - 80' c & fully open @ 90'c but my fan comes on at 85' c before the car is up to temp.
god i wish i never bought into the honda brand as holdcroft chester are pissing me off.
its now booked in for monday for a proper inspection to be completed on the car so lets see what the outcome is then,even if they say all is fine i am happy with that as i know its been checked out ,i dont drive the car its kath's car but she has daniel our 2yr old with her so i need to know the car wont let her down.
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received a report from cheshire oaks honda today that states the car has been tested against another jazz hybrid and that the cooling fans both cut in at 90 degrees
a week before honda gave me a data sheet that stated the temperature of the thermostat when fully open is at 90 degrees so to say in the report that the fans cut in @ 90 ,something still doesn't seem to be right.
'*''*heads at cheshire oaks honda do they know what they are doing ??? as all they have now done is confuse me