Question about 2004 Mazda RX-8

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I own a 2004 mazda RX8 grand touring model... my coolant light is on in my dash but i keep checking the coolant level and its at the right level??? what might be the cause of the light being on and how do i fix it ??? thank you for your time

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There is a TSB about it.. the coolant level float becomes saturated and looses its boiency.. the whole resevoir needs to be replaced.

Posted on Jul 20, 2010

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2 Answers

I have a red warning light showing on my dash on my mazda rx8, looks like a little bird cage, or a little temple or an upside down fuel filter,what is it


Page 5-39 of your owners manual

https://www.mymazda.com/MusaWeb/pdf/manuals/2007_RX8_OM.pdf

Its the low coolant light. Check the coolant level when the engine is cold. Add coolant as necessary. Take a quick peak in the engine compartment and under the car to see if there are any noticeable coolant leaks. If you don't see anything continue to monitor the coolant level. If it goes down again than there is definitely a leak and should be pressure checked to find the source.

Let me know if you have any other questions and I'll be happy to help.

Aug 19, 2011 | 2007 Mazda RX-8 Touring Sedan

1 Answer

I am getting a problem with madza rx8 , 2004 model, the engine coolant light is coming on when i take the car on long distance journeys , meaning when the speed reaches above 90km, when i go under slower...


first thing you must do is check the coolant level in the expansion tank if its low to the level of the sensor it will cause this if so simply add some coolant if not see if you can flush out the coolant expantion tank there might be something causing the sensor to send false signal.

Nov 13, 2010 | 2004 Mazda RX-8

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How do I fix the power steering n my mazda rx8 04?


My RX8 had the same problem. First, change your battery cable ends. On the Positive cable there is a white wire that powers the power steering. It probably has a bad connection at the battery post. I cut the end off my rx8 and just put a regular battery cable end on it and my problem was solved.

Jan 06, 2010 | 2004 Mazda RX-8

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Coolant light


If you locate the water expansion tank (front of the bonnet, opened, with the pressure-cap to top-up if necessary) - check that there's sufficient coolant in there (check whilst the engine is cold).

If so, you may be suffering the same problem as a lot of RX8 owners, with a dodgy coolant level sensor in the tank. One way to confirm this is to remove the connector to the tank - on the left-hand side of the tank as you look from the front (not the air-conditioning connector, immediately to the left of it, attached to an aluminium billet). Ensure the (now free-hanging) connector from the wiring loom is safely stowed and give it a test drive. If you're satisified that the warning goes away then you know that the level sensor in the tank is faulty (and therefore the warning light is spurious). Unfortunately, that's a pricey item to replace (dealer price, UK, in the region of £200).

Remember, leaving the coolant sensor unplugged to avoid the spurious warnings would mean that a genuine problem that resulted in (catestrophic) loss of coolant would then go undetected, until too late. So do this at your peril.

Sep 05, 2009 | 2004 Mazda RX-8

2 Answers

Coolant light comes on and uses alot of petrol


Agree with the earlier post - the sensor that forms part of the coolant expansion tank is renown for failure - keep an eye on the level and it should be okay. Replacement tank (sensor cannot be replaced by itself) will cost you upwards of a couple of hundred quid.

Regarding the fuel economy - 18-20 miles is about right; you can get much better on a long motorway journey, but normal RX8 territory will give you the fuel consumption that you're talking about.

I'd suggest having a look around some of the RX-8 owner's clubs / forums - there's a wealth of information there which is invaluable to new owners. The RX-8 is a slightly different beast to most cars and needs a bit of TLC.

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2004 Mazda RX8 Power Steering not working and light on.


I would check your power steering fluid level first. If it's full your power steering pump is bad.

Jan 19, 2009 | 2004 Mazda RX-8

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2004 mazda rx8 power steering


The Mazda RX8 has electric power steering there is no fluid. You may have a problem with you electronic power steering control moduel, or the power steering pump

Jan 17, 2009 | 2004 Mazda RX-8

1 Answer

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