Check engine light
- Thread starter Longhaul412
- Start date
Here is an update of my battle with the dreaded CEL problems. I've had my CX-7 in the shop 5 times, since August, for a total of almost 3 weeks with CEL pproblems.
1. Clean gas cap
2. Clean gas cap & reset codes
3. replace gas cap
4. replace filler neck
5. replace purge valve
So far the replace purge valve seems to have worked. It's a new part as of the 1st of Dec.
The dealer has been working hard but it is really up to Mazda Techline.
I hope this helps.
1. Clean gas cap
2. Clean gas cap & reset codes
3. replace gas cap
4. replace filler neck
5. replace purge valve
So far the replace purge valve seems to have worked. It's a new part as of the 1st of Dec.
The dealer has been working hard but it is really up to Mazda Techline.
I hope this helps.
No Zoom Zoom for me 
I haven't enjoyed my first Mazda experience very much at all. Shortly after I got the car in August the "check engine" light came on and the cars performance markedly declined. I took it to the Mazda service department and they said the gas cap must be loose. (Although I know it wasn't, I had to go through the motions to appease them) Regardless, after "tightening" the gas cap, the car continued to perform poorly. I returned it again and went on a test drive with one of the technicians. He thought it was running poorly because I was using, as he said, "the wrong brand of gas". (I was using BP's premium gas instead of Sunoco's premium.) He assured me that if I always use Sunoco or Marathon, the car would run fine! So I tried using Sunoco 94 octane, their best. The performance remained poor. (The check engine light has been on continually this whole time) Next they told me I have to wait until all that 'bad BP gas' is flushed out and it would take several tanks. By now I'm beginning to realize they don't know what's wrong. (But miraculously they DO know that driving the car for months with the check engine light is not damaging the engine in any way!) Finally, early in December, they told me it was a defective "shutter valve" but they can't replace it yet because the part is on "national backorder". They would call when the part came in. (No call by the end of December) Finally, I called, and they told me the part is still on national backorder but that they recently learned how to temporarily fix the problem by cleaning and greasing the part. They said this fix should last at least a couple weeks before getting gummed up again and can be properly fixed with the new part. When I actually took the car in to have this procedure performed, however, the service department now said Mazda wasn't going to replace that part. He said they had been informed by Mazda that putting a little grease on the defective part was now the permanent solution. One technician told me that Mazda won't replace them because all of the CX7's have defective shutter valves. I'm sure that would be just too expensive for poor Mazda. Of course, again, the service department assured me that driving all that time with the engine light on and a defective shutter valve doesn't harm or reduce the lifespan of the motor in any way! They're sure! (Funny, that's NOT what it reads in my owners manual but maybe that's defective too) I asked them to put this statement is writing (Of course they couldn't do that!) Also, they told me that shifting into gear while the engine is revving at a high RPM is also fine. Yes, they told me, the shutter valve does control the RPM and is supposed to reduce it shortly after it warms up but the fact that my cars RPM doesnt go down isnt caused by the defective shutter valve but that its winter and its cold outside. (Never mind that my car is parked in a heated garage) They so desperately wanted to prove to me that it takes 2.5 to 3 minutes for a brand new CX7 to stop revving by starting one of the new cars sitting out on the dealer lot. (That wasn't necessary since they had already told me that ALL the CX7s are defective) They also said I have to expect these problems in the first year for a new model car. (Never mind, again, that its not the first year for that engine!). I'm not sure what the car will run like when I get it back later but I'm sure the "fix" will not last. (Like they told me before they got their Mazda corporate talking points). Even if it runs fine now, how much damage has been done? How much has the lifespan of the engine been reduced? No one seems to know, and if they do, they're not talking.
ps, after I just finished writing this, they called from the dealer and apologized... it's not the shutter valve. It's the "swirl control valve". (Still no replacement, just more grease)
I haven't enjoyed my first Mazda experience very much at all. Shortly after I got the car in August the "check engine" light came on and the cars performance markedly declined. I took it to the Mazda service department and they said the gas cap must be loose. (Although I know it wasn't, I had to go through the motions to appease them) Regardless, after "tightening" the gas cap, the car continued to perform poorly. I returned it again and went on a test drive with one of the technicians. He thought it was running poorly because I was using, as he said, "the wrong brand of gas". (I was using BP's premium gas instead of Sunoco's premium.) He assured me that if I always use Sunoco or Marathon, the car would run fine! So I tried using Sunoco 94 octane, their best. The performance remained poor. (The check engine light has been on continually this whole time) Next they told me I have to wait until all that 'bad BP gas' is flushed out and it would take several tanks. By now I'm beginning to realize they don't know what's wrong. (But miraculously they DO know that driving the car for months with the check engine light is not damaging the engine in any way!) Finally, early in December, they told me it was a defective "shutter valve" but they can't replace it yet because the part is on "national backorder". They would call when the part came in. (No call by the end of December) Finally, I called, and they told me the part is still on national backorder but that they recently learned how to temporarily fix the problem by cleaning and greasing the part. They said this fix should last at least a couple weeks before getting gummed up again and can be properly fixed with the new part. When I actually took the car in to have this procedure performed, however, the service department now said Mazda wasn't going to replace that part. He said they had been informed by Mazda that putting a little grease on the defective part was now the permanent solution. One technician told me that Mazda won't replace them because all of the CX7's have defective shutter valves. I'm sure that would be just too expensive for poor Mazda. Of course, again, the service department assured me that driving all that time with the engine light on and a defective shutter valve doesn't harm or reduce the lifespan of the motor in any way! They're sure! (Funny, that's NOT what it reads in my owners manual but maybe that's defective too) I asked them to put this statement is writing (Of course they couldn't do that!) Also, they told me that shifting into gear while the engine is revving at a high RPM is also fine. Yes, they told me, the shutter valve does control the RPM and is supposed to reduce it shortly after it warms up but the fact that my cars RPM doesnt go down isnt caused by the defective shutter valve but that its winter and its cold outside. (Never mind that my car is parked in a heated garage) They so desperately wanted to prove to me that it takes 2.5 to 3 minutes for a brand new CX7 to stop revving by starting one of the new cars sitting out on the dealer lot. (That wasn't necessary since they had already told me that ALL the CX7s are defective) They also said I have to expect these problems in the first year for a new model car. (Never mind, again, that its not the first year for that engine!). I'm not sure what the car will run like when I get it back later but I'm sure the "fix" will not last. (Like they told me before they got their Mazda corporate talking points). Even if it runs fine now, how much damage has been done? How much has the lifespan of the engine been reduced? No one seems to know, and if they do, they're not talking.
ps, after I just finished writing this, they called from the dealer and apologized... it's not the shutter valve. It's the "swirl control valve". (Still no replacement, just more grease)
I saw your post on Edmunds and replied there too.
"the P2006 code means the ECU is not seeing the TSCV [Tumble Swirl Control Valve] being closed and thinks the TSCV is stuck open... it is not catestrophic but may reduce low end torque and increase emissions
mazda engineers are working on a repair kit for this problem... it will be at least mid january before it is out and a TSB will be released then as well"
link: http://www.mazdas247.com/forum/showthread.php?t=123651124&page=3
A good site to watch for TSB's (technical service bulletins) is here:
http://www.finishlineperformance.com/cx7/bulletins_index.html
"the P2006 code means the ECU is not seeing the TSCV [Tumble Swirl Control Valve] being closed and thinks the TSCV is stuck open... it is not catestrophic but may reduce low end torque and increase emissions
mazda engineers are working on a repair kit for this problem... it will be at least mid january before it is out and a TSB will be released then as well"
link: http://www.mazdas247.com/forum/showthread.php?t=123651124&page=3
A good site to watch for TSB's (technical service bulletins) is here:
http://www.finishlineperformance.com/cx7/bulletins_index.html
livingstoncm
Member
Well, my check engine light came on today. My Mazda only has about 850 miles on it. I live in Texas and we are going through a winter blitz, so I do not know if the drop in temperature has anything to do with this? I took it right in to the dealership, have not heard from them yet. Anyone know what is going on??? Should I expect "gas cap problems" or "Leak detection pump?"
I am aware of this gas cap recall for the CX7. I have 451 miles and I DON'T see any CHECK ENGINE light yet (hopefully not) and have not experienced any indication of poor or sluggish performance.
The question is, should I have my dealership check into it and replace the gas cap as per the recall? I'm a little hesitant coz they might screw up something. Like the saying goes, if it ain't broken, don't fix it.
The question is, should I have my dealership check into it and replace the gas cap as per the recall? I'm a little hesitant coz they might screw up something. Like the saying goes, if it ain't broken, don't fix it.
HI all,
I'm sorry to hear people having CEL's on a brand new production car, however, this seems to be a problem across the Mazda range, particularly with the EVAP system (for Emissions). I have had about 4 trips to the dealer with my LX and they have checked everything - finally replacing most of it and the problem still happens. Gas cap is most likely the cause - at least thats the going dealership explaination, but even they don't know.
Hope everyone has better luck and maybe Mazda will address this issue - seen a lot of this on Protege's, but weird to see it on so many new cars that just came out - should tell Mazda that there is a problem somewhere
.
I'm sorry to hear people having CEL's on a brand new production car, however, this seems to be a problem across the Mazda range, particularly with the EVAP system (for Emissions). I have had about 4 trips to the dealer with my LX and they have checked everything - finally replacing most of it and the problem still happens. Gas cap is most likely the cause - at least thats the going dealership explaination, but even they don't know.
Hope everyone has better luck and maybe Mazda will address this issue - seen a lot of this on Protege's, but weird to see it on so many new cars that just came out - should tell Mazda that there is a problem somewhere
.3700 miles and my 1st CEL appeared. Dropped it off at dealer this morning, just got a call saying "Its a common problem, we don't have a fix right now (waiting for word from Mazda), come pick up your vehicle and we'll call you when we've got something".
When the light first appeared, I suspected the gas cap, stopped, tightened it - light went away for a few hours then reappeared and won't go away.
When the light first appeared, I suspected the gas cap, stopped, tightened it - light went away for a few hours then reappeared and won't go away.
4400k and check engine light. its been around 20 degrees for a few days in a row. What triggered my 1st cel was the first day it dropped under freezing @680 miles. 2nd string of cold weather tripped it yesterday morn, then it turned off mid-day. Started teh car today no light, came on while driving into the office. Going in tomorrow for gas cap recall & check the light out
Blue_eyed_girl5
Member
- :
- 2007 Mazda CX-7 Blackcherry
I have had my CX-7 for about 3 months and about 4500 miles. My CEL light came on and when I took it in to the dealership, the service techs didn't even know that there had been a recall. Pretty sad. CEL went off for a few days and then came back on. The dealership didn't even have a gas cap for the Car. We only have one Mazda Dealership up here so I am stuck going there for any problems.
Not sure if the cold weather really has anything to do with the CEL - at least not in my case. I bought my CX-7 last August. Over the past few months we've had some really (and I mean really!) cold weather here in Calgary - I'm talking -20's to -30's (celcius) for days at a time. My light didn't come on until a few weeks ago, and we were actually in the middle of a warm stretch (by Calgary winter standards), with temps above zero.
My light came on shortly after a fill-up and has been coming on/off whenever I play around with the gas cap.
PS - most recent fill up resulted in 16mpg - over 12 fill ups I am now averaging 17mpg (50/50 city highway)
My light came on shortly after a fill-up and has been coming on/off whenever I play around with the gas cap.
PS - most recent fill up resulted in 16mpg - over 12 fill ups I am now averaging 17mpg (50/50 city highway)
