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Old 08-04-2011, 03:49 PM   #1
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Cobb AP+ NOOB = Fried PCM

So I was installing my new-to-me Cobb AP and the cord must have been super sensitive because I was tucking the wires and it disconnected at 64%
Hiley Mazda says that the PCM is done and I need to spend $968.00 on a new one. Any suggestions? Is it possible to get a new one for cheaper? A used one?
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Old 08-04-2011, 03:55 PM   #2
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Did you try the recover process on the AP?

Cobb can rebuild the ECU for you ....contact them before you let the stealership try and sell you a new one......
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Old 08-04-2011, 04:00 PM   #3
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Ouch...

The only thing ive noticed (sometimes, and its SO rare that I cant catch it on a datalog or on video) with my Cobb AP (or noticed when I got it and installed it in the following weeks, like I said its very rare) is it seems near redline my ECU will "Glitch" or something like that where my RPMs will fall instantly to about 5K, kinda like a shudder then suddenly again they will pick up again and ill be back at redline. There is a obvious power loss/ power cut but it happens so rarely that I havent worried about it...

Goodluck with this problem...
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Old 08-04-2011, 04:06 PM   #4
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Geesh......... Anytime you are flashing any computer you leave it alone until it's done. IIRC, you can also save the info with ATR no?
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Old 08-04-2011, 04:22 PM   #5
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Wow, sorry to read that, man. What a headache.
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Old 08-04-2011, 04:31 PM   #6
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Cobb fixed mine. Doesn't Cobb have a place in Plano or something? They did mine for free minus shipping. They partially fixed the connection issue with the USB cord on the new ones.
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Old 08-04-2011, 07:46 PM   #7
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well, I pulled the trigger on the new one because I will be moving in a week and I need to be able to drive my car 1700 miles. Now I'm on my way to the doctor for a tetanus shot. Stepped on a damn rusty nail doing fence repair.

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Old 08-04-2011, 07:54 PM   #8
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Did you try the recover process on the AP?

Cobb can rebuild the ECU for you ....contact them before you let the stealership try and sell you a new one......
It will not give any power to the OBDII port. (that was the first thing I tried)

If cobb were to rebuild the ECU could I sell it to someone else? I mean, is it worth anything?
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Old 08-04-2011, 07:59 PM   #9
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Cobb can unbrick it for you but you already moved on a new one.

I noticed this with my Rev/iPhone wireless OBD2 setup. If I touch the harness wiring coming out of the OBD connector the device connection comes and goes. It sems as if the connections are weak at best.

I also personally recommend having a battery charger connected to the battery and charging while performing any flash procedure, Cobb or otherwise.
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Old 08-04-2011, 08:50 PM   #10
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so it would be useless to get it unblocked for the purpose of selling it and trying to recuperate my losses?
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Old 08-04-2011, 09:20 PM   #11
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I've been trying to sell one for over 4 years, good luck
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Old 08-04-2011, 11:36 PM   #12
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Okay, Thanks Team. If cobb were to unbrick the ecu, would it still work with the car without having mazda reflash it? Or would it need ot be reprogrammed because I am getting a new one?
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Old 08-04-2011, 11:44 PM   #13
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Send to Cobb and receive working ECU in return.
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Old 08-05-2011, 12:05 AM   #14
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and then just plug it in? or will it need to be flashed and have my keys re-coded etc. ?
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Old 08-05-2011, 12:24 AM   #15
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I unplugged mine and sent it to Cobb.....fast forward a few days and I received it from Cobb and plugged it back in. The End Nothing else to it.
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Old 08-05-2011, 12:26 AM   #16
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PS to everyone out there: Never mess with the cords while it's doing its thing. Secure connection is KEY
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Old 08-05-2011, 09:00 AM   #17
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PS to everyone out there: Never mess with the cords while it's doing its thing. Secure connection is KEY
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Old 08-05-2011, 11:12 AM   #18
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i had a kid in our shop that hooked up his battery backwards and fried his ECM. Theres a federal warrentee on them for 7 or 8 years... you may be able to get mazda to put a new one in for free, as long as you don't tell them you're the reason it's fucked up. it worked for this kid at honda, but you may have already gotten it fixed, and then cobb does unbricking also... just for future referance, or anyone else that might read this.

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Old 08-05-2011, 12:26 PM   #19
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i had a kid in our shop that hooked up his battery backwards and fried his ECM. Theres a federal warrentee on them for 7 or 8 years... you may be able to get mazda to put a new one in for free, as long as you don't tell them you're the reason it's fucked up. it worked for this kid at honda, but you may have already gotten it fixed, and then cobb does unbricking also... just for future referance, or anyone else that might read this.
oops
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Old 08-05-2011, 12:50 PM   #20
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and then just plug it in? or will it need to be flashed and have my keys re-coded etc. ?
It will have to be recoded because Mazda will have changed the information stored in the cluster and anti-theft module to reflect the new PCM, so the old PCM would be recognized any longer.
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Old 08-05-2011, 09:52 PM   #21
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^thx

I called Cobb and they said that they could definitely fix it. I mailed it to them earlier today so they will get it monday morning. I was told that once they receive it, It will be taken care of that day and shipped back to me that day or the next FOR FREE.

I told Mazda to hold the part so I have a backup plan incase Cobb can't get it to work.
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Old 03-18-2012, 10:34 PM   #22
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I'm taking my car to dealer to see why my car won't start ,, i had my batterry off for 3 weeks everyone says needs to be taking to dealer. I'm hoping my friend didn't put my battery backwards and fried anything, he us handycap he likes to help but man I hope is just a flash. I'll know Tuesday
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Old 03-18-2012, 11:37 PM   #23
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Ohh man that's scary. Sorry to hear that but good thing everything is working out.
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Old 03-18-2012, 11:37 PM
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