Last post on Dec 11, 2013 at 2:52 AM
You are in the Mazda CX-7
What is this discussion about?
Mazda CX-7, Engine, SUV
Go to NHTSA to file a safety complaint.
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#10 of 611 Re: CX -7 engine problems [desertgirl1]
Sep 29, 2009 (3:24 pm)
Powertrain is not the engine.
Powertrain is the transmission system or AWD system for turning the wheels.
A timing chain break (which seems to be very suspect) is an engine failure, not drive train failure, thus a timing chain failure is only covered under the 36K mile warranty.
Any, I would recommend that you contact this person at the USDOT and let him know of your issue, and that of the dozens of other owners who are having this problem with the 07 model.
Derek L. Rinehardt
Safety Defects Engineer / Federal Investigator
U.S Department of Transportation
National Highway Traffic Safety Administration
Office of Defects Investigation, Vehicle Controls Division
1200 New Jersey Ave, SE
Washington, DC 20590
Office: (202) 366-3642, (877) 536-8368 x63642
Fax: (202) 366-1767
#11 of 611 Re: CX -7 engine problems [howardru]
Oct 10, 2009 (4:19 am)
Per Mazda website:
Powertrain Warranty Parts List
The listed below are the powertrain components covered under the Powertrain Limited Warranty:
Cylinder Block, Cylinder Head, and All Internal Lubricated Parts (Piston engines)
Rotor Housing and All Internal Parts (Rotary engines)
Timing chain/belt and tensioner
Timing chain/belt front cover and gaskets
Turbocharger Housing and All Internal Lubricated Parts
Supercharger Housing and All Internal Lubricated Parts
Powertrain Control Module
Water Pump and Gasket
Seals and Gaskets
Freeze Plugs were not added
Transmission and Transaxle
Transmission Case and All Internal Parts
Clutch Pressure Plate
Transfer Case and All Internal Parts
Transmission/Transaxle Control Module
Front/Rear Drive System
Final Drive Housing & all Internally Lubricated Parts
Manual and Automatic Hub (4X4)
Front Wheel Hubs and Bearings (FWD Transaxles)
Rear Axle Housing & all Internally Lubricated Parts
Propeller shaft (RWD and AWD only)
Constant Velocity Joints
Rear Axle/Hub Bearings (RWD and AWD only)
Seals and Gaskets
#12 of 611 Re: CX -7 engine problems [niko61]
Oct 10, 2009 (3:51 pm)
OK. I'm completely wrong. Thanks..
#13 of 611 2007 Cx7 Chain Slap Noise ?
Oct 13, 2009 (2:51 pm)
So just returned from Mazda dealer my complaint was the engine sounds like a diesel ticking noise , At first they said it sounded normal then another tech came over and stated that it sounds like a chain slap noise ,After they removed the manifold they determined that the engine had jumped time and that the timing chain needed to be replaced requesting for me to provide the Oil change receipts or neither they nor Mazda would cover the repair ( who keeps these receipts ) So a couple of questions other than this noise the car runs great , 1) if it has jumped timing shouldn't the engine light come on , 2) It only has 27,000 miles Do I really need to provide receipts of past oil changes , Which I can get , But what about if I changed it myself .
#14 of 611 Re: 2007 Cx7 Chain Slap Noise ? [maytagman]
Oct 14, 2009 (11:55 am)
Infortunately, the 2007 model year seems to be loaded with engine and turbo problems that occur prematurely and very early in the life of the car. Just take a look at all the message boards about the engine problems. Check out
www.mcx7.com and www.mazda247.com
#1) That is a good question. One would think that the CEL would light up with such a "dramatic" event. A timing belt should be replaced periodically per the owner’s manual specifications. It may have worn and stretched just enough to slip over a cog a bit. The dealer must remove the timing belt covers and check the alignment of your cam and crank. If it really jumped, there should be subtle marks on the cogs and the rear cover or casting. The compression will be good during a cranking test, but will not be ok during a running compression check. If that’s the case, they should replace the timing belt and check the pulleys. If your timing belt did not slip, the timing chain tensioner or guide shoes may be worn and will require replacement Either way, this seems to fall outside the normal replacement guidelines and I would consider this a premature failure of the system.
2) Yes, for them to honor their warranty they have been demanding proof of service which based on the owners manual is oil change every 7,500 miles. If you have done them yourself then you need to show sales receipts of 6 quarts of oil and an oil filter on the sales receipt dates about every 6 months or 7,500 miles. If it is not a problem to get the sales receipts, then just do it, so you leave nothing to chance.
#15 of 611 CX-7 Timing Chain and then the Turbine
Oct 28, 2009 (3:20 pm)
In August while travelling down Route 95 in Delaware, the CX-7 going at speed of 60 shut down. Car had to be wrestled to side of the road as everything died and there could have been a horrible crash. Car towed 125 miles to dealer. Timing chain broke at 73,000 miles. Dealership said it happens. Needed to replace the engine at a cost of 7,000. Wrote letter to Mazda citing fact a timing chain would eventually need to be replaced but not at 73,000. Mazda had no compassion and refused to give any break due to mileage. Three thousand miles later and a month later, turbine failed. They wanted 3,500 to fix it. Called Mazda explained problem first the engine then the turbine. Probably happened due to lack of maintenance. Wrong I have all the receipts. They didn't care. Mazda said we will call you back. Never did. Got rid of the car at a loss. We will never buy a Mazda again. We never even saw the service manager at the dealership. Mazda USA was non-responsive . There is something wrong if both the engine and turbo fail at the mileage they did. Oh yeah they refused to pick up any cost of the rental car. No more Mazda.
#16 of 611 Re: CX -7 engine problems [howardru]
Oct 29, 2009 (12:10 pm)
Thank you for that great info. I will definitely call him before my hearing which is scheduled for Tuesday the 3rd of Nov. I am so tired of dealing with this issue. I haven't had a car for so long. Its awful when you play by the rules, struggle and fight to give your kids a good life and then something like this happens to make things more difficult! Its a bit overwhelming at times. Thanks for all the input.
#17 of 611 Re: CX -7 engine problems [desertgirl1]
Oct 31, 2009 (9:54 am)
I am so glad to read this comment about the timing chain. 2 weeks ago I was on a trip(to St. Louis from Tulsa, OK) and a "knocking" noise started once I was on the highway at speed (70 mph) and I was losing power intermittently while accelerating. It continued for about an hour and I found the nearest authorized Mazda dealer (Reliable Mazda in Springfield, MO) and stopped to ask. It was close to closing time on a Friday evening. The Service Manager made a cursuory check, and "conveniently" thought to check the timing chain by opening the oil reservoir cap and visualy inspecting. He said it looked fine. I asked him to describe to me the "symptoms" of a timing chain that is not operating correctly (ie. slipping, etc.). Everything he described made it sound like a timing chain issue. I asked how serious it looked and his exact words, "well, coulld be or couldn't be" I asked him what I should do and he replied,"well, you can continue or your trip or not, I just don't, but it could be fine." So, being late my wife and I set back out, not 20 mins later the timing chain failed. The car is 2.5 years old with just 34k miles on it and regular maintenace. Although I am in the similar situation with Mazda Warranty in that I have 2 verifiable oil change receipts. But they HAVE denied my warranty claim. After speaking with the District Service Manager for the region that works directly for Mazda USA and not the dealer, he explained that despite the owners manual having the oil changes at every 7500 miles it should be no more than 3-5k miles because the turbo engine is HARD on the timing chain. I'm sorry but us poor, dumb consumers are not certified technicians on high performance turbo charged engines. After reading this and a couple other stories about this EXACT same issue, I believe that Mazda engineered an inferior timing chain for the stress that the 2007 model year engine places on it.
I have filed complaints with the BBB against Mazda USA, as well as, the California Attorney General. I have also sent complaint letters to the following people:
James O' Sullivan - President and CEO, Mazda North Am Ops
Yasuo Kunita - VP Customer Service, Mazda North Am Ops
Eric Johnston - VP Sale, Service, and Parts, Mazda North Am Ops
Blase De Leo - Regional GM Southeast Region, Mazda North Am Ops
Ron Stettner - Regional GM Midwest Region, Mazda North Am Ops
at the following addresses:
10 Corporate Park, Ste 200
Irvine, CA 92606
7755 Irvine Center Drive
Irvine, CA 92618
I recommend that every person suffering from this systemic issue do the same and apply the very appropriate pressure on a car company that has made a great car but with inferior engineering. Warranty will repair this issue and make sure it does not happen again. Anyone else suffering this issue please contact me at mmasterson1gmail.com and we can coordinate a strategic camapign to resolve this issue for other American in this situation.
#18 of 611 Re: CX -7 engine problems [mmasterson1]
Oct 31, 2009 (2:11 pm)
Thank you for the infomation on the corporate officers. I also filed a complaint with the Nathional Highway Transportation Safety Board.
#19 of 611 Re: CX -7 engine problems [gentemio]
Oct 31, 2009 (3:29 pm)
Heres one for you Brought the car to the Mazda dealer in Danvers Ma. where I bought it just 24 months ag now 27, K miles later Complained about ticking noise They took the valve cover off determined Engine sludge told that this caused it to jump timing and that they would have to take pics and have Mazda review to see if they would cover the repair ,Also asked me to provide the oil changes for the past 24 months which I di ( 5 of them ) aprox evry 3,500 miles Told me to drive the car home and park it, Well the car runs great so I dropped it by the local certified garage They said it needed a good oil change and the timing is fine . Still waiting for the Dealer to call me and bring back to have the repairs they tell me that Mazda will not cover this in warranty , So being the smarty pants that I am I bring it to another Mazda dealer and pay them to check it out . They listen to the engine and take it for a test drive Top guy says what are you crazy Nothing wrong with this car . They then call me at work later on and clue me in that According to Mazda they revoked our engine warranty after looking at the pics from the previous dealer ,So a misdiagnosis by the dealer has cost us our warranty . Yeah like I'm gonna let this one droppppp. Good thing I was able to get my oil receipts from the three different companies that changed the oil The second Mazda dealer is going to bat for us Stay Tuned ...and wish us luck