Gas Recirculation Valve (egr Valve) problems of the 2007 Mazda Cx-7

Six problems related to gas recirculation valve (egr valve) have been reported for the 2007 Mazda Cx-7. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2007 Mazda Cx-7 based on all problems reported for the 2007 Cx-7.

car   Gas Recirculation Valve (egr Valve) problem 1
Failure Date: 11/28/2012

Check engine light due to the egr valve = exhaust gas recirculation valve being stuck in the open position with 51k miles. The dealership replaced the valve (part number l3k9-20-300a) and the gasket (part number lf6t-20-305) for $882. 63 being that it was not covered under my certified pre owned warranty or my extended warranty since it is part of the emissions package I paid, in full, out of pocket. I have checked several online forums and have seen this is a common occurrence for 2007 cx7 between 25k and 55k miles. I think this is a much larger problem than regular wear and tear requiring an investigation.

car   Gas Recirculation Valve (egr Valve) problem 2
Failure Date: 01/19/2012

The 2. 3 liter 4 cylinder l3t engine that is in my wife's 2007 Mazda Cx-7 has a bad variable valve timing actuator which was verified today by dual Mazda of jacksonville florida. A warranty extension was issued by Mazda around the 14th of January 2012 following the initial TSB (technical service bulletin) date 23 February 2011. My concern is not that Mazda has acknowledged an internal engine part as being faulty, but that the part stated in the warranty extension could possibly make the timing chain go bad. Mazda did not cover how, when, what rpm range, engine load, or most importantly what speed this might happen if the actuator is not replaced. The last thing anyone wants is their engine timing going out. . . At any speed or at anytime while moving in a motor vehicle, catastrophic engine failure will surely follow. I feel that these faulty variable valve timing actuators are an integral part of making this engine run safely and ultimately the car overall and should be looked into before its an actual incident.

car   Gas Recirculation Valve (egr Valve) problem 3
Failure Date: 11/19/2011

Dealership maintained Cx-7 experienced major failure while driving. Engine died and major oil leak was noticed. Car had to be towed to the dealership. The dealership first indicated that there was some type of failure regarding the #3 cylinder. Dealership said that the probable cause of failure was due to turbo overheating. Later the dealership stated that the #4 piston failed and caused catastrophic damage to the engine. The cause of failure was never determined. The engine, turbocharger, thermostat, egr valve, intake manifold, starter and O2 sensor were replaced. Total cost of repairs (labor, parts, and misc charges) prior to tax was $10,557. 49. Prior to engine failure we informed the dealership that the check engine light was constantly on but stated that it was due to the gas cap not being properly put on. They never scanned the computer despite the car being under warranty. Additionally a ticking noise has been previously brought to the dealership's attention but was told that the engine noise was normal for this particular engine.

car   Gas Recirculation Valve (egr Valve) problem 4
Failure Date: 08/12/2011

My 2007 Cx-7 experienced a catastrophic failure of the a/c compressor resulting in smoke in the cabin. After parking to allow the car to clear it would not re-start and I had to be towed to the local dealer. This occurred late on a Friday afternoon and so they were closed until the following Monday. The potential failure was known and Mazda had issued a letter extending the warranty on this item but not a full recall. The dealer installed new parts but since then it has been back several times because of lack of performance. I have received explanations of too much/too little refrigerant block dlines with particles from the original failure. After the third return visit in June 2012 the problem appeared to be fixed and the system worked until last week so I scheduled another visit. The problem has now being diagnosed as a failed hose fitting and they are expecting me to pay for the part but not the labor. My view is that parts like this should not fail at the current 41,000 miles and that some of this is related to the previous fixes. Also CO-incidentally the check engine light came on as I was scheduling a dealer appointment. This has gone on and off several times over the last month. It has been diagnosed as a failed egr valve and will cost $700 to replace. Again this is not something that I would expect to need at such a low mileage and on a car that has all routine serving and has been babied. This prompted me to go on-line to research and there appears to be lots of similar issues with this model of Mazda and yet they are not performing recalls. I am hoping that my experience will add to the case to pressurize Mazda to be more customer orientated with their Cx-7 owners and/or to support a class action suit to help recompense owners against these non routine mechanical failure issues.

car   Gas Recirculation Valve (egr Valve) problem 5
Failure Date: 08/01/2010

2007 Mazda Cx-7 grand touring. (family car)! 43,636 miles(out of warranty) first off, my wife and I have a had our car serviced and oil changed every 3000 miles! and we have taken the car in numerous times for the a/c not working in over 90 degrees temperatures. And have been told by 2 dealerships that the Cx-7's a/c doesn't work well over 90 degrees. Living in southern California its over 90 degrees for almost 6 months of the year. A couple days ago, my wife, young daughters and I were driving our car to a destination only 3 miles from home. (the car had been sitting all day, in the garage. ) we had the a/c on half way(85 degrees out). About ready to get off the freeway and only going 60 mph. The air blowing out of the a/c started blowing hot, easily over 100 degrees. The a/c started whining, though it was a belt slipping. Immediately turned off the a/c and fan motor. And then began to smell burning plastic. Drove 1/4 mile to destination and right before parking it, a plume of white smoke started coming out of the engine compartment and a/c vents. I opened the hood to put out the fire, I thought would be there. But the car just kept smoking with no visible flame. Smoked-no it "plumed", for about 15 minutes. I called aaa , and had the car towed to a local Mazda dealership. When I told the service what happened, he smiled and shook his head and told me that the a/c compressor blew. Without even looking! he said, he couldn't understand why Mazda has not recalled this problem yet. And that he has had a lot of upset Cx-7 owners spending over $2500 because they didn't turn off the a/c when it stopped working. Resulting in timing chains, blown engines and other expensive parts going out due to the stress caused on the a/c belt when the compressor blows. And if I hadn't been reading blog after blog online since 2007 when we got the car, about the a/c compressor problem, I would of been paying $2500 or more too! one day of service and $1025 later. The car seems to be fine.

car   Gas Recirculation Valve (egr Valve) problem 6
Failure Date: 02/03/2010

My wife and I purchased a 2007 Mazda Cx-7 a few years ago, and over the last three months it has been in the shop with multiple problems. From an oil leak, to a bad compressor, then the timing chain gone bad and now another problem with the egr. The car has a little over 38k miles and to me it seems very odd for a car being this young in miles, to have major problems such as these. After going back and forth with the Mazda corporate office, they first agreed to pay for the parts for my latest problems since I'm now out of warranty. I was fine with that until I found out the labor was over $500 to fix this problem. When I call the corporate office to try to discuss splitting the labor costs, their supervisor contacted me back with an attitude like I did something wrong and decided they were now not going to help at all. That is just poor customer service behind a vehicle that was not ready to be put on our us roadways. In my opinion, this car should be recalled. . Read more...

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