Clubjazz - Honda Jazz & HR-V Forums
Honda Jazz Forums => Honda Jazz Mk1 2002-2008 => Topic started by: guest255 on January 29, 2017, 01:05:17 PM
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As my Jazz is approaching its 10th anniversary the coolant is due to be replaced.
Now I am in two minds whether to get Honda to do it or do it myself.
Honda are asking £65 all in.
The diy route reading the Honda owners manual and also the Haynes one seems fairly simple.
However there are some key differences:
Haynes say replace the 'o' ring seal when replacing the radiator drain plug, Honda don't. Personally I would replace it for the sake of a few pounds. If it does leak and knowing my luck it will, to replace it would mean removing the drain plug again and loosing all your nice new coolant. I know you can place a container underneath but from experience you can't catch every drop.
The Haynes manual mentions also draining the coolant from the engine via the engine drain plug but the Honda manual makes no mention. Having had a quick look at my engine the drain plug is visible but access doesn't seem good.
The refilling part differs in that Haynes seem to have a simpler way rather than Honda's faff with letting it idle until the fan comes on twice and then holding the engine at 1500rpm until the fan comes on. I know this is all to do with getting rid of any trapped air, but the Haynes method seems a lot simpler.
So has anyone had there coolant changed at a Honda garage and if so other than the coolant part was there any other part listed? i.e. 'o' ring seals, engine coolant drain plug seal
For those who have had a go themselves any issues? Did you drain the engine via the engine drain plug or not bother? Also what refilling method did you use Honda's or Haynes or a bit of both? Any trapped air issues?
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Anytime I have drained the coolant from an engine, done regularly before the advent of the newer antifreeze types, I just removed a bottom radiator hose.
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I think there is a fear of airlocks and trapped air if you drain the block, so the easier/safer option is to just drain the radiator. If your old fluid is not full of detritus, then adding fresh fluid to the radiator only will be enough to boost your corrosion & a/freeze levels. Some may prefer to do this twice to replenish a greater volume.
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TG
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So has anyone had there coolant changed at a Honda garage and if so other than the coolant part was there any other part listed? i.e. 'o' ring seals, engine coolant drain plug seal
For those who have had a go themselves any issues? Did you drain the engine via the engine drain plug or not bother? Also what refilling method did you use Honda's or Haynes or a bit of both? Any trapped air issues?
Hi JazzyB, I just finished to change the cooling fluid. Starting to remove the big hose I noticed that there is a special plug and then I used it. I was very happy about this nice feature. The most German cars do not have such simple but very comfortable solution. Well done Honda, well done!
Draining the fluid I was astonished that the existing one was green, then I checked once again the approval lists and finally I filled the red one G-30 fluid.
No issues so far with leaking drainage plug or trapped air! :D
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Finally got round to changing the coolant and after refilling despite leaving the car running for 1.5 hours the radiator fans did not come on? No sign of overheating, water level seems fine.
I know the fans work because when the climate control is on they kick in.
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I know the fans work because when the climate control is on they kick in.
The cooling fans come on when the aircon is running to cool the aircon condenser which is in front of the engine radiator. This not the same thermostat as controls the fans for engine radiator cooling. I think there are two fans, one for each cooling job.
Vic.
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Been out on a short run and everything seems fine no overheating or warning light. But in the ten years of ownership have always used the climate control all year round so never noticed if the fans are working or not in non-climate control mode.
Will go for a longer run next week and see what happens..............
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I only have the one fan (no air con), but it never comes on under normal circumstances. Only time it ever came on was in a long traffic queue on an exceptionally hot, windless day.
It does however come on after being left to tick over for a few minutes. Do they not leave it ticking over, until the fan comes on, before doing the MOT emission checks?
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I too had concerns over lack of fan last year, but later checking the OBDII values for coolant temp it remained bellow threshold at around 88°. The thermostat seems to have a high point of ~90°. On other cars the fans seem quite trigger happy.
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TG
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My ScanGauge has only ever recorded a temperature greater than 85°C the once, and that was when the fan came on. Temperature that day was recorded as reaching 91°C.
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Finally got round to changing the coolant and after refilling despite leaving the car running for 1.5 hours the radiator fans did not come on? No sign of overheating, water level seems fine.
I know the fans work because when the climate control is on they kick in.
I didn't leave the engine idling longer than 10 minutes, I just checked the coolant level the days after the first week and refilled again and again.
The fans come on when the engine is going to overheat or periodically when the AC is on