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Mazda CX-7 Engine Problems

578 messages,  Last post on May 21, 2013 at 11:59 AM

You are in the Mazda CX-7 Forum.

What is this discussion about? Mazda CX-7, Engine, SUV

    
 
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Messages Page 27 of 59

#256 of 578 Re: engine problem! [mazdausasux] by sweetie12

Jul 18, 2011 (6:01 pm)

Replying to: mazdausasux (Mar 30, 2011 4:03 am)
My 2007 CX-7 has had too many problems to list, but now it needs an engine too at 42,000 miles!!! They also told me the same thing, "improper maintenance" and I have all the receipts from the Mazda dealership for all the work they did and their services done. Now they are saying I should have had a fuel injection cleaning done at 15K miles and in the future (after the new engine) a fuel injection cleaning should be done every 15-30K miles at a cost of about $170.00 each!!! I talked to a couple of mechanics and they say this is absurd!! I'm trading it in on a Honda!!! I will never buy another Mazda EVER!!!! And customer service was as useless as the dealership!!! These cars are all lemons and they won't admit it!

#257 of 578 Amen!! by nattiekins

Jul 18, 2011 (6:50 pm)

We traded in our Mazda Migraine in for a Honda Odyssey and am all the happier for it.. Did I mention its not making us cash poor either!! So glad our nightmare is O-V-E-R!!

#258 of 578 CX-7 Engine failure by carbust

Jul 19, 2011 (7:22 am)

My CX-7 has the same problem with the engine as all the people who have posted here. Is there some kind of class action lawsuit coming together on this? I am astounded by all the people who have had the same issues on this vehicle that the makers have not taken responsibility for. Please give me some answers.

#259 of 578 Year with problems? by crepitus

Jul 19, 2011 (9:17 am)

It seems all the problems is with the 2007 CX7. Is there anyone with newer models having engine failures?

#260 of 578 Me too!! by flqueenfan

Jul 21, 2011 (6:49 pm)

My 2007 CX-7's VVT actuator supposedly was repaired according to the recall or TSB back in March of 2009. (I say supposedly because in trying to line up all my maintenance records I called the dealer where the work was done; they have evidence of the labor only, but not on the parts; this comes into play shortly.)
Even after the repair, she always ran rich and other than ridiculously low mileage (which I chalked up to it being an AWD) I loved my car. Then, about a month ago, I started getting a ticking noise in the engine. I took her in and they determined the timing chain was bad and needed replacement. This was done at 59,850 miles. Almost immediately thereafter, I noticed an odd whistling noise, but it was very intermittent and I didn't notice anything out of the ordinary. Then, my friends and I went over to Cape Canaveral to watch the Atlantis launch. On the way over, the noise started getting worse, then all of a sudden I started to lose my acceleration and my Check Engine light came on. We were almost at the Cape, so she rested in the parking lot and my friends and I watched the launch. Seven hours later, we piled back into the car and headed home (FYI, I'm in Tampa--it's about a 150 mile trip one-way). The noise started up immediately, and although I didn't have the normal punch, I could still drive just fine and get up to highway speeds safely. By the time we got home, we'd determined that my turbo seemed to have an issue.
Saturday morning, I took my car into the dealer where I had the timing chain done and said I got this repaired, it's making a funny noise, and now I have no power. They tested it and said to drive it home, bring her back Monday and they'd start working on a proper diagnosis. I got about 500 feet away and so much smoke was pouring out of the back of my car that I couldn't see. I turned around to take the car back to the dealer and then she started bucking like a bronco.
The dealer determined (SHOCKING!) that the turbo was dead and the repair would be $2300. My mileage was at 60,600. I immediately called Mazda corporate to get them to help out with the repair, as I was 600 miles out of warranty and the dealer did this huge repair and now my car is dead, not to mention the fact that my car worked before they started testing it. Today, eleven days later, Mazda has graciously agreed to cover half the repair. When I reminded their rep about the fact that the car worked before the dealer had it, they said that's the dealer's problem.
I love my car but am scared about what else is lurking. I thought I had been lucky because I'd had no major problems, but I was wrong. Unfortunately, I'm stuck with the car no matter what because I cannot possibly afford to get a different car. Arrrggghhhh!!!

#261 of 578 Re: Me too!! [flqueenfan] by wwest

Jul 22, 2011 (9:23 am)

Replying to: flqueenfan (Jul 21, 2011 6:49 pm)
Rather than pay the dealer $2300 you might consider simply having them "wire" the turbo wastegate(***) WIDE OPEN. The turbo would then NEVER be functional but you would probably still have enough engine power, significantly improved FE, and a lot less likelihood that the turbo would contribute to future problems.
 
And if you wished you could have the engine head milled to raise the compression ratio to the non-turbo DFI "standard" of 13:1 and thereby increase the engine HP, not fully back to the boosted level, but increased.
 
*** Your post reads, actually, as if the turbo wastegate might have caused the current failure. The wastegate should remain fully open unless the engine power level you "request" via the accelerator is beyond the capability of the engine with "boost".
 
"..noticed an odd whistling noise.."
 
I'm guessing that was the result of the wastegate being closed when it should have remained open. That would result in the turbo's turbine being constantly, FULL TIME, exposed to exhaust gasses. Turbo's are generally only "rated" for part time use, only during acceleration and/or times of the need for "extraordinary" engine power.

#262 of 578 Mazda 2007 cx7 by tootie6

Aug 02, 2011 (2:50 pm)

Engine lite on been on for two days. Had it read to only find out that the erg valve gone to the bad 54,000 miles $500.00 to replace. Mazda should be ashame of themselves taking people money. I was told by the tech a Mazda that this is a common problem Mazda is having with the cx7's and that tells me that they are very much aware of it, but will not stand behind this issue. It is very sad. Mazda need to recall all of the cx7s and fix all of the problems they know exist.

#263 of 578 Re: Mazda 2007 cx7 [tootie6] by wwest

Aug 03, 2011 (7:42 pm)

Replying to: tootie6 (Aug 02, 2011 2:50 pm)
Much like the backside of the intake valves in a DFI engine, your EGR valve will get coated with residue from the exhaust flow. It's generally quite easy to remove the EGR valve and clean the valve and valve seat.

#264 of 578 Re: 2007 Cx7 Chain Slap Noise ? [maytagman] by mike8183

Aug 16, 2011 (1:28 pm)

Replying to: maytagman (Oct 13, 2009 3:51 pm)
Add my name to the ever growing list of casualties! Just was rejected by Mazda for this major repair because 2 oil changes could not be documented. Time for class action law suit. Mazda is now like my health insurance company just rejecting claims knowing they are liable but hoping we all go away. My Mazda service contact WARNED me that even if I pay to have this repaired, there is still a high probability that the engine will need to be replaced.
 
Headed over to my local law firm now to see if I can drag their criminal butts into small claims court.
 
Can't imagine anyone who does the most basic of research of Mazda would even think of walking in their show room. ZOOM ZOOM. what a joke

Messages Page 27 of 59

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