Pissed off and hopeful at the same time!
07-30-2015, 12:07 AM
#1
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Pissed off and hopeful at the same time!
Well everyone after taking my 14 z51 with only 4200 miles, in for its second oil change the car has not been the same! I partially blame myself for not checking my oil level when I picked the car up however when I dropped the car off I was assured that the dealers' main tech that was trained specifically on the c7, would be performing the maint on it. Here's my story, after picking up "The Beast", the next day I went on a short road trip about 100 miles west. On my return home the CEL light came on and the car ran a little rough like it was missing and idled funny. After taking the car back to the dealer, I was told that they had seen this problem before and that the thought I needed A new MAF. They also asked if I had been running the car at high rpm's which could cause the problems with the MAF. (no I hadn't) Well after replacing the MAF I was told the car was doing the same thing and part of the problem was the car was running lean and they now thought the problem was I needed a new pcm. Well after changing said pcm the car is still doing the same thing. The in house tech admits he is stumped and has no idea what is wrong with the car and the next step is they have called chevy and are awaiting for an engineering tech to come down and look at the car. So to sum it up my car has been at the dealer for almost two weeks, no one knows what's wrong with it, no one can answer as to when this "eng tech" is coming to look at the car, and basically no can tell me anything. Oh when I call and ask for an update on the car, everyone I talk to acts as though I am bothering them and just kinda gives me the run around. I even talked to the tech and his exact words to me were "what else can I help you with"...are you kidding me? smh...smh...... I still have a glimmer of hope that the tech will show up tomorrow and all will be well..considering that the vacation that I have planned whereas me and "the beast" were hitting the road for a couple of weeks, is scheduled to kick off this weekend! To be continued...
07-30-2015, 12:47 AM
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Well everyone after taking my 14 z51 with only 4200 miles, in for its second oil change the car has not been the same! I partially blame myself for not checking my oil level when I picked the car up however when I dropped the car off I was assured that the dealers' main tech that was trained specifically on the c7, would be performing the maint on it. Here's my story, after picking up "The Beast", the next day I went on a short road trip about 100 miles west. On my return home the CEL light came on and the car ran a little rough like it was missing and idled funny. After taking the car back to the dealer, I was told that they had seen this problem before and that the thought I needed A new MAF. They also asked if I had been running the car at high rpm's which could cause the problems with the MAF. (no I hadn't) Well after replacing the MAF I was told the car was doing the same thing and part of the problem was the car was running lean and they now thought the problem was I needed a new pcm. Well after changing said pcm the car is still doing the same thing. The in house tech admits he is stumped and has no idea what is wrong with the car and the next step is they have called chevy and are awaiting for an engineering tech to come down and look at the car. So to sum it up my car has been at the dealer for almost two weeks, no one knows what's wrong with it, no one can answer as to when this "eng tech" is coming to look at the car, and basically no can tell me anything. Oh when I call and ask for an update on the car, everyone I talk to acts as though I am bothering them and just kinda gives me the run around. I even talked to the tech and his exact words to me were "what else can I help you with"...are you kidding me? smh...smh...... I still have a glimmer of hope that the tech will show up tomorrow and all will be well..considering that the vacation that I have planned whereas me and "the beast" were hitting the road for a couple of weeks, is scheduled to kick off this weekend! To be continued...
07-30-2015, 11:22 PM
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Thanks, I sure hope so. About how long did it take for the rep to finally look at your car. I can't even get a date of when they will be down....and Detroit is only 45mins away from Toledo!
07-31-2015, 03:59 AM
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Well, I did not have to have a rep look at it. I actually took the car home when it happened and diag'd it myself. Located the coil pack wire issue in about 20 minutes. Took it to the dealer and showed them exactly what it was and told them "hey, fix this."
07-31-2015, 08:24 PM
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what am I missing about you checking the oil level? was it wrong? did it contribute to your problem?
07-31-2015, 11:48 PM
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St. Jude Donor '13-'14-'15
As a tuner and an owner of a C7 here is what my experience has been---
The oil change procedure in the owner's manual is vague--The biggest problem is either OVER FILLING the dry sump tank or UNDER filling it----
In your case I suspect overfilling--Reason why----The PVC systems on a dry sump causes the PCV to brubble oil bubbles up thru the intake track where they are vented to--
These oil bubbles normally happen on a quick lift of the throttle- after a WOT blast---Oil then gets into your intake tract where it eventually FOULS your MAF !! A fouled MAF will make your car run horrible !!! and throw a MAF code----Seems why they replaced your MAF where in reality there was nothing wrong with it --- confirmed by what you said it-- happened again--
My guess there is nothing wrong with your ECM either----It is simply a poor design of the PCV system causing oil ingestion into your intake tract fouling your MAF
If you read about the 2015-2016 dry sump cars they have remedied this by adding a "catch can "onto the PCV system----GM calls it something else but it is a simple catch can
If it were my car----I would install a hi quality catch can specifically designed for the dry sump C7---Not only does it filter out oil and oil vapor it has a built in check valve that at WOT will eliminate any oil from entering your intake tract from bubbling upon lifting off the throttle
The oil change procedure in the owner's manual is vague--The biggest problem is either OVER FILLING the dry sump tank or UNDER filling it----
In your case I suspect overfilling--Reason why----The PVC systems on a dry sump causes the PCV to brubble oil bubbles up thru the intake track where they are vented to--
These oil bubbles normally happen on a quick lift of the throttle- after a WOT blast---Oil then gets into your intake tract where it eventually FOULS your MAF !! A fouled MAF will make your car run horrible !!! and throw a MAF code----Seems why they replaced your MAF where in reality there was nothing wrong with it --- confirmed by what you said it-- happened again--
My guess there is nothing wrong with your ECM either----It is simply a poor design of the PCV system causing oil ingestion into your intake tract fouling your MAF
If you read about the 2015-2016 dry sump cars they have remedied this by adding a "catch can "onto the PCV system----GM calls it something else but it is a simple catch can
If it were my car----I would install a hi quality catch can specifically designed for the dry sump C7---Not only does it filter out oil and oil vapor it has a built in check valve that at WOT will eliminate any oil from entering your intake tract from bubbling upon lifting off the throttle
08-01-2015, 08:21 AM
#7
Melting Slicks
I installed the RX catch can and in a very short time is is getting a significant amount of oil. Very surprised about that.
I ran a can of CRC intake valve cleaner thru the PCV port just in case some oil had fouled the intake valve.
I ran a can of CRC intake valve cleaner thru the PCV port just in case some oil had fouled the intake valve.
08-01-2015, 10:19 AM
#8
Safety Car
As a tuner and an owner of a C7 here is what my experience has been---
The oil change procedure in the owner's manual is vague--The biggest problem is either OVER FILLING the dry sump tank or UNDER filling it----
In your case I suspect overfilling--Reason why----The PVC systems on a dry sump causes the PCV to brubble oil bubbles up thru the intake track where they are vented to--
These oil bubbles normally happen on a quick lift of the throttle- after a WOT blast---Oil then gets into your intake tract where it eventually FOULS your MAF !! A fouled MAF will make your car run horrible !!! and throw a MAF code----Seems why they replaced your MAF where in reality there was nothing wrong with it --- confirmed by what you said it-- happened again--
My guess there is nothing wrong with your ECM either----It is simply a poor design of the PCV system causing oil ingestion into your intake tract fouling your MAF
If you read about the 2015-2016 dry sump cars they have remedied this by adding a "catch can "onto the PCV system----GM calls it something else but it is a simple catch can
If it were my car----I would install a hi quality catch can specifically designed for the dry sump C7---Not only does it filter out oil and oil vapor it has a built in check valve that at WOT will eliminate any oil from entering your intake tract from bubbling upon lifting off the throttle
The oil change procedure in the owner's manual is vague--The biggest problem is either OVER FILLING the dry sump tank or UNDER filling it----
In your case I suspect overfilling--Reason why----The PVC systems on a dry sump causes the PCV to brubble oil bubbles up thru the intake track where they are vented to--
These oil bubbles normally happen on a quick lift of the throttle- after a WOT blast---Oil then gets into your intake tract where it eventually FOULS your MAF !! A fouled MAF will make your car run horrible !!! and throw a MAF code----Seems why they replaced your MAF where in reality there was nothing wrong with it --- confirmed by what you said it-- happened again--
My guess there is nothing wrong with your ECM either----It is simply a poor design of the PCV system causing oil ingestion into your intake tract fouling your MAF
If you read about the 2015-2016 dry sump cars they have remedied this by adding a "catch can "onto the PCV system----GM calls it something else but it is a simple catch can
If it were my car----I would install a hi quality catch can specifically designed for the dry sump C7---Not only does it filter out oil and oil vapor it has a built in check valve that at WOT will eliminate any oil from entering your intake tract from bubbling upon lifting off the throttle
08-01-2015, 08:29 PM
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As a tuner and an owner of a C7 here is what my experience has been---
The oil change procedure in the owner's manual is vague--The biggest problem is either OVER FILLING the dry sump tank or UNDER filling it----
In your case I suspect overfilling--Reason why----The PVC systems on a dry sump causes the PCV to brubble oil bubbles up thru the intake track where they are vented to--
These oil bubbles normally happen on a quick lift of the throttle- after a WOT blast---Oil then gets into your intake tract where it eventually FOULS your MAF !! A fouled MAF will make your car run horrible !!! and throw a MAF code----Seems why they replaced your MAF where in reality there was nothing wrong with it --- confirmed by what you said it-- happened again--
My guess there is nothing wrong with your ECM either----It is simply a poor design of the PCV system causing oil ingestion into your intake tract fouling your MAF
If you read about the 2015-2016 dry sump cars they have remedied this by adding a "catch can "onto the PCV system----GM calls it something else but it is a simple catch can
If it were my car----I would install a hi quality catch can specifically designed for the dry sump C7---Not only does it filter out oil and oil vapor it has a built in check valve that at WOT will eliminate any oil from entering your intake tract from bubbling upon lifting off the throttle
The oil change procedure in the owner's manual is vague--The biggest problem is either OVER FILLING the dry sump tank or UNDER filling it----
In your case I suspect overfilling--Reason why----The PVC systems on a dry sump causes the PCV to brubble oil bubbles up thru the intake track where they are vented to--
These oil bubbles normally happen on a quick lift of the throttle- after a WOT blast---Oil then gets into your intake tract where it eventually FOULS your MAF !! A fouled MAF will make your car run horrible !!! and throw a MAF code----Seems why they replaced your MAF where in reality there was nothing wrong with it --- confirmed by what you said it-- happened again--
My guess there is nothing wrong with your ECM either----It is simply a poor design of the PCV system causing oil ingestion into your intake tract fouling your MAF
If you read about the 2015-2016 dry sump cars they have remedied this by adding a "catch can "onto the PCV system----GM calls it something else but it is a simple catch can
If it were my car----I would install a hi quality catch can specifically designed for the dry sump C7---Not only does it filter out oil and oil vapor it has a built in check valve that at WOT will eliminate any oil from entering your intake tract from bubbling upon lifting off the throttle
Makes sense.....is it that simple of a fix though simply install a catch can? If so should I just call the dealer Monday and say hey guys I think this is the problem go ahead and install a catch can so I can get my baby out of there!
08-02-2015, 10:03 AM
#10
Safety Car
I assume you have a Z51.
Thanks in advance.
Al
08-03-2015, 04:27 AM
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St. Jude Donor '13-'14-'15
I have been using the UPR catch cans for years---High quality fit finish and installation
They make a Z51 specific model and a NON Z51 model
here is the webpage for the Z51 model
http://www.uprproducts.com/chevy-bil...rvette-14.html
They make a Z51 specific model and a NON Z51 model
here is the webpage for the Z51 model
http://www.uprproducts.com/chevy-bil...rvette-14.html
08-04-2015, 09:06 PM
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Latest Update.....Eng Tech from GM still hasn't made it down. Called and gave a few suggestions but couldn't give a definitive date as to when he himself could come check the car out. Meanwhile the dealership informed me they installed a 2nd ECM in case the first one was defective. Still no dice....3 weeks and counting...still running lean!
08-05-2015, 12:45 AM
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St. Jude Donor '13-'14-'15
Latest Update.....Eng Tech from GM still hasn't made it down. Called and gave a few suggestions but couldn't give a definitive date as to when he himself could come check the car out. Meanwhile the dealership informed me they installed a 2nd ECM in case the first one was defective. Still no dice....3 weeks and counting...still running lean!
08-05-2015, 07:10 AM
#15
Instructor
Did the dealership tell you what the code was with the CEL? Until we know that us "keyboard warriors" are really taking a shot in the dark at what the problem could be because it could be any number of things. Knowing the code will potentially rule out some items.
08-05-2015, 07:27 PM
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No sorry Ken they didn't tell me what code. Currently the GM tech is conversing with them over the phone, telling them what to try etc..if that doesn't work out then they will schedule an appointment next week to come down....
08-14-2015, 12:46 AM
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Ok gang, the techs finally made it down to look at my car and they think that it's the 02 sensors that are bad! Are you kidding me? Any half *** mechanic knows that if the CEL light comes on then a majority of the time its usually the 02 sensor, in any vehicle. Hell I just changed out 2 02 sensors in the past year on my other cars, both GM products by the way. Anyway of course they now have to order them so hopefully tomorrow the problem will be solved. SMH....a freakin 02 sensor almost a month later and a freakin sensor sheez GM!
08-19-2015, 11:02 PM
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Latest update.....02 sensors installed and car still not fixed. Dealer mechanic is stumped. They are going back to the drawing board and calling the eng techs back down. Only God knows when they will get back down. At this point I don't even know if I still want the car. Does anybody know about Ohio's lemon law? Or GM's buyback program. Car has been in the shop for over a 30 days now which I believe qualifies it under the lemon law.
08-20-2015, 05:38 AM
#19
Drifting
Latest update.....02 sensors installed and car still not fixed. Dealer mechanic is stumped. They are going back to the drawing board and calling the eng techs back down. Only God knows when they will get back down. At this point I don't even know if I still want the car. Does anybody know about Ohio's lemon law? Or GM's buyback program. Car has been in the shop for over a 30 days now which I believe qualifies it under the lemon law.
Sound like you have met the conditions....good luck
08-28-2015, 11:23 PM
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Just wanted to update everyone. I finally got the car back today after 40 days, after two new ecm sensors, a new MAF, and a high pressure fuel pump, the problem was with the injectors! So after replacing all 8 injectors the CEL is off and the car is back to normal. ( I hope, after 1 day of driving it still seems as though the car is running lean and idling rough, smh, at this point I don't know if I even want to keep the car!