Possible bad tune

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Old May 30, 2015 | 03:33 PM
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Default Possible bad tune

I got the street tune just under two years ago, and in the last several months, I've had this problem where the car will stutter and the traction control will turn off and often the AC shuts off - the compressor won't engage until I restart the car. It does it when I'm idling and driving. It seemed like a MAF problem, so I replaced it and the IAT sensor, but that didn't solve it. Does it sound like a bad tune?
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Old May 30, 2015 | 03:55 PM
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Tuner wasn't by a name of Andy Lopez was it??? Lol had a bad rep in El Paso, Austin, and last I heard San Antonio.
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Old May 30, 2015 | 05:37 PM
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Originally Posted by gixer600
Tuner wasn't by a name of Andy Lopez was it??? Lol had a bad rep in El Paso, Austin, and last I heard San Antonio.
No. It was just a street tune from a fellow Tech guy.
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Old May 30, 2015 | 05:52 PM
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Tunes generally don't just degrade over time. Sounds like something else.
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Old May 30, 2015 | 06:26 PM
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Originally Posted by ppp
Tunes generally don't just degrade over time. Sounds like something else.
100% correct. The only way I have seen a tune cause a problem later down the road is from the AFR being off and causing ring wash and or detonation. It actually sounds as though you may be having body control module problems. Diagnosing a problem over the internet is not a good method though so I can't say for sure.
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Old May 30, 2015 | 07:00 PM
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I bought the torque app and adapter and took a couple of screenshots when it acted up earlier this week. I remember seeing a bad o2 bank one sensor one code, maybe a misfire. I don't know how accurate the app is.
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Old May 31, 2015 | 02:40 AM
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Originally Posted by codyvette
100% correct. The only way I have seen a tune cause a problem later down the road is from the AFR being off and causing ring wash and or detonation. It actually sounds as though you may be having body control module problems. Diagnosing a problem over the internet is not a good method though so I can't say for sure.
Well, from what I've gathered so far, getting a new BCM might be a pain in the ***. The damn thing is $579 on Rock Auto. How would I diagnose it?
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Old May 31, 2015 | 01:35 PM
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Originally Posted by Shackleford
Well, from what I've gathered so far, getting a new BCM might be a pain in the ***. The damn thing is $579 on Rock Auto. How would I diagnose it?
Then I think you have to program it
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Old May 31, 2015 | 01:48 PM
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Originally Posted by Camaraderie
Then I think you have to program it
I assume that I would have to take it to the dealer. After I left a birthday party, the damn AC compressor wouldn't even turn back on. With summer here in Houston, I need it. Is there a way to confirm that the problem is the BCM? I'd hate to spend $600+ and find out that it's something else.
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Old May 31, 2015 | 07:39 PM
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Yeah take it to the dealer and pay there $79 diagnosis fee lol! or if you have a friend at the dealer that can scan it with there Tech2. Most like HPT wont scan any of the BCM codes etc... I wouldn't do anything til I was sure what the problem is. Because like Cody said this is internet diagnosis and its a guess at best. Go let someone that knows what there doing look at it and it could save you lots of money in the long run, by not just replacing parts etc... GL!
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Old May 31, 2015 | 08:39 PM
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How does the car idle? Does it surge a lot ? Do your motor sometime seem to rev up and down without you touching the gas pedal ?
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Old May 31, 2015 | 09:55 PM
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Originally Posted by Tuskyz28
How does the car idle? Does it surge a lot ? Do your motor sometime seem to rev up and down without you touching the gas pedal ?
Only when it acts up does the motor rev up and down and it's only for a second. Other than that, the car runs just fine.
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Old May 31, 2015 | 09:56 PM
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Originally Posted by Inspector12
Yeah take it to the dealer and pay there $79 diagnosis fee lol! or if you have a friend at the dealer that can scan it with there Tech2. Most like HPT wont scan any of the BCM codes etc... I wouldn't do anything til I was sure what the problem is. Because like Cody said this is internet diagnosis and its a guess at best. Go let someone that knows what there doing look at it and it could save you lots of money in the long run, by not just replacing parts etc... GL!
Eh. I don't know anyone with a Tech2, so I might have to take it to the dealership.
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Old Jun 1, 2015 | 06:37 PM
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I called two dealerships and their diagnostic fee is $125. :brick
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Old Jun 2, 2015 | 09:14 AM
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Could be a ground problem

See If your o2 wire is burnt and grounding since its not reading
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Old Jun 2, 2015 | 11:18 AM
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A bad primary oxygen sensor would cause the symptoms you're describing
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Old Jun 2, 2015 | 09:32 PM
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Originally Posted by chrysler kid
A bad primary oxygen sensor would cause the symptoms you're describing
Even the traction control and compressor turning off?

I just remembered that the torque app gave me some bad test results last week. I'll check for damage tomorrow.

Thanks.
Attached Thumbnails Possible bad tune-screenshot-1-.jpg   Possible bad tune-screenshot.jpg  
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Old Jun 3, 2015 | 01:27 PM
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eeek.... electrical gremlins I hate those *******.

J
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Old Jun 3, 2015 | 05:29 PM
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Originally Posted by kornfreak_401
eeek.... electrical gremlins I hate those *******.

J
You and me both. I just checked the oxygen sensors and didn't see any possible damage.

The car threw a code today, but I think that it's unrelated:

P0116. Engine Coolant Temperature (ECT) Circuit Range/Performance Problem

Last edited by Shackleford; Jun 3, 2015 at 07:51 PM.
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Old Jun 3, 2015 | 11:12 PM
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Probably is directly related. It sounds as though your problem will end up being a bad ground or a shorted 5v reference. It could be anywhere. Good luck and keep us posted.
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