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  1. J

    2016~2023 Dealer Service Recommendation: Fuel Injector Service?

    Unless they show you data from the ECU that shows misfire codes, too lean codes, or positive long term fuel trims, they have zero basis for recommending cleaning the injectors. What led to the diagnosis of "carbon build up" other than a drop in mileage? What exactly does their induction...
  2. J

    Poll 2.5T Coolant Leak/Engine Replacement

    I agree, the terms of the warranty absolve Mazda from any obligation to help out. On the other hand, Mazda acknowledged the existence of a defect that causes the engine to fail prematurely. I don't think it's unreasonable for anyone to expect that cylinder heads last the life of the car...
  3. J

    Poll 2.5T Coolant Leak/Engine Replacement

    All it would take is Mazda Corporate to write a check.
  4. J

    Poll 2.5T Coolant Leak/Engine Replacement

    The OP stated he appealed his case to the "Mazda Customer Experience Center" and they too denied him. More than just the dealer is being an a$$hole in this situation, Mazda itself is guilty. I hope this isn't a sign of things to come, but more than 1/3 of the responses to the poll attached to...
  5. J

    Poll 2.5T Coolant Leak/Engine Replacement

    Well, it appears that anyone considering buying one of these used should budget somewhere between $3k to $7k to replace the head or engine if it hasn't been replaced already. If I owned a current generation CX-9, I would plan on trading it in the day the warranty is expires. Heck, I might do...
  6. J

    Poll 2.5T Coolant Leak/Engine Replacement

    This is very disappointing to hear. It would be somewhat defensible on Mazda's part to deny assistance if this failure was actually attributable to improper maintenance, rather than a design flaw. As it is, I don't think it is unreasonable for buyers to assume a cylinder head should last the...
  7. J

    2009 CX-9 GT - Poor brake performance

    YouTube and the various Ford Edge forums are littered with examples of spongy brake pedals caused by faults in either the ABS unit or the ABS controller. Maybe you can try some of the fixes proposed for the Edge? It sounds like some scan tools don't cycle the ABS pump properly, are you sure...
  8. J

    2009 CX-9 GT - Poor brake performance

    I've never had any complaints about the brakes in the 2010 I own. It sounds like you have unresolved issues. The pedal travel you describe sounds like air in the system. I've also not been impressed with ceramic pads in comparison to "normal" pads. They need some heat to work and tend not to...
  9. J

    2012 CX-9 Touring went in limp mode after trying to sell at Auction

    A new coil is about $25. Swap it and see. Cylinder 6 is easy to get to, it's the first plug from the right side when looking at the engine from the front of the car.
  10. J

    Poll 2.5T Coolant Leak/Engine Replacement

    Mazda has issued a TSB and acknowledged the issue. It is possible that people going to the service department with this issue are now getting help without having to fight as much with the dealer and/or Mazda corporate.
  11. J

    Rear air conditioning better than the front

    That sensor is a temperature sensor. I found it on a parts website.
  12. J

    Transmission cooler standard on AWD CX-9?

    The first generation CX-9 had a separate tow package option for FWD models. The AWDs came with it automatically. The second generation models don't have a tow package option. The owners manual lists the maximum trailer weight as 3500 pounds and the maximum gross combined vehicle/trailer...
  13. J

    Off Topic EV discussion

    Your question made me curious so I dug through their methodology page, and their emission calculations do not include production or disposal of either electric or gasoline cars. I read something a while ago (older than that) that attempted to include the production and disposal costs, and it...
  14. J

    Off Topic EV discussion

    Here's a study from 2015: https://www.ucsusa.org/resources/cleaner-cars-cradle-grave#.VlTapL_1PL9 Even when charged by coal sourced electricity, an EV is still better than a gasoline powered car that gets less than 35 MPG. There's a handy map in that study. Fortunately, most areas of the...
  15. J

    Changing the water pump to be on the safe side

    Nobody but Ford and Mazda knows what the failure rate on these pumps are, and neither of them has shared it publicly. To be honest, the rate seems relatively low given the sporadic nature of the posts here and on the various Ford message boards. Looking around, there are engines with 200k+...
  16. J

    Engine changes for '22 CX-9?

    Did you read that TSB? Mazda is telling people that take a lot of short trips to replace the oil more frequently.
  17. J

    Skipping Wipers

    Here's what I've seen recommended over the years to clean glass when it gets dirty or stained. This is also roughly in order of aggression: 1. Dawn dishwashing liquid. Gets wax and oil/grease off really well. Also takes wax off paint fantastically well so be careful with it. 2. Barkeeper's...
  18. J

    Intake valve cleaning

    Given the posts on this forum, it appears that you are more likely to suffer a cracked cylinder head than carbon deposits on the intake valves.
  19. J

    2015 CX-9 High-Pitch Whine From Engine on Accessory Key Cycle

    Any warning lights or codes? In that area of the firewall, there are a couple of fuse boxes, an evaporative emissions valve, and I think the ABS pump. It sounds like a buzzing relay or solenoid. You could open the fuse box and feel the relays to see if any are vibrating. If that isn't it you...
  20. J

    RUMOUR: New CX-9 (possibly CX-90) destined for release in 2024

    That article estimates that the starting MSRP is up by $5k. Perhaps that implies that the Sport and Touring trims are no more. It will be interesting to see how Mazda tries to position these new SUVs in the market. Bumping the starting price by five grand pushes the CX-90 well above its...
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