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Old 11-04-2013, 08:40 AM   #1
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Help - Check engine light

I have a 2010 v6 mustang and my check engine light is on. All the oxygen censors is on and 2 other codes.. My engine vibrates at idle .. I got my harmonic balancer checked and that's not it and my motor mounts not it I just got my spark plugs changed that's not it and I got my throttle body changed that's not it. One person is telling me it's my computer and the other is telling me it's my battery box and I need to get my wires done over in my engine. Has anyone else had this problem?????
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Old 11-04-2013, 09:33 AM   #2
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Try this

Dis-connect your battery and take it to auto zone. They can check to see if it is a weak cell. If it is the battery then that is your problem. If the battery is good then put it back into the car and see if that fixed anything. If the Battery showed bad you need to replace it.

I'm sure all of your wires have not worn out.

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Airaid Cold Air intake. red caliper covers, 3.7L performance engine cover, Flat black hood spears.Boss 302 strut brace, CDC rear panel, Trunk Cargo net,--Dash carpet cover,
Viser stickers to cover ugly yellow warning crap,Aluminum driveshafft and Swarr Bar.
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Old 11-04-2013, 09:50 AM   #3
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Ok thanks I'll try that. Do you know if it could be the computer if it's a newer car ?
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Old 11-04-2013, 12:26 PM   #4
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I really do not think it is a computer.

I'm guessing it is just a weak battery. When did this problem start? Did you buy the car new? Does your car drive OK?

If it's not a bad battery you will probably have to go to a Ford dealer and get the PCM re-flashed. If the computer is bad and nobody ever had a tune on it they should replace it for free because the computers are supposed to be warranty covered for eight years.

I'm sure you will let us know what went wrong.
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2012-candy red- V-6 MCA, Automatic Trans. CFM Valve cover breather. MMD blackTail light trim.Magnaflow axle back street mufflers, JLT oil catch can.MMD hood struts.
Airaid Cold Air intake. red caliper covers, 3.7L performance engine cover, Flat black hood spears.Boss 302 strut brace, CDC rear panel, Trunk Cargo net,--Dash carpet cover,
Viser stickers to cover ugly yellow warning crap,Aluminum driveshafft and Swarr Bar.
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Old 11-04-2013, 01:03 PM   #5
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It started back in June or July .. And I bought it used about 9 months ago.

---------- Post added at 02:03 PM ---------- Previous post was at 02:02 PM ----------

And it drives very well
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Old 11-04-2013, 01:43 PM   #6
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Have you had a "FORD" dealer check it out?

It may be worth the cost to take it to an Authorized "FORD" dealer to get this looked at. Having people guess will not answer the problem. Only a genuine "FORD" dealership is going to have the diagnostic equipment to see exactly what is going on.
That is if they have a real mechanic to run the equipment and not just a parts changer throwing trial & error parts on your car ( At your expense) until the problem stops.
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2012-candy red- V-6 MCA, Automatic Trans. CFM Valve cover breather. MMD blackTail light trim.Magnaflow axle back street mufflers, JLT oil catch can.MMD hood struts.
Airaid Cold Air intake. red caliper covers, 3.7L performance engine cover, Flat black hood spears.Boss 302 strut brace, CDC rear panel, Trunk Cargo net,--Dash carpet cover,
Viser stickers to cover ugly yellow warning crap,Aluminum driveshafft and Swarr Bar.
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Old 11-04-2013, 01:50 PM   #7
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Ford was the ones that told me I need a new battery box and my engine wiring had to be replaced
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Old 11-04-2013, 02:44 PM   #8
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I'll bet a previous owner must have done something

I'm wondering why they say "Battery ""BOX""" all that does is hold a battery.

Maybe a previous owner had something connected and just messed something up when they removed whatever it was And if what they removed was programmed into the CPU the computer is looking for that item and that is what is causing the problems.

Try a different dealer and see what they have to say.
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2012-candy red- V-6 MCA, Automatic Trans. CFM Valve cover breather. MMD blackTail light trim.Magnaflow axle back street mufflers, JLT oil catch can.MMD hood struts.
Airaid Cold Air intake. red caliper covers, 3.7L performance engine cover, Flat black hood spears.Boss 302 strut brace, CDC rear panel, Trunk Cargo net,--Dash carpet cover,
Viser stickers to cover ugly yellow warning crap,Aluminum driveshafft and Swarr Bar.
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Old 11-04-2013, 05:18 PM   #9
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I wonder if they were referring to the block where the wires come together near your battery.
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Old 11-04-2013, 05:30 PM   #10
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Before I did anything further, I'd go to autozone, advance auto (or any other similar store) and have them read the codes. They do it for free.

This will give you a much better idea of what's going on rather than just guessing.

It could be something silly that you can fix yourself that Ford would charge a $120 "diagnostic" fee for. Aka a "hook it up to the OBD port and read the codes" fee.
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Old 11-04-2013, 05:40 PM   #11
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These are the codes that I got P0135 oxygen sensor heater bank 1 sensor 1
P0141 oxygen heater circuit bank 1 sensor 2
P0155 oxygen heater circuit bank 2 sensor 1
P0181 oxygen sensor heater circuit bank 2 & sensor 2
P0403 exhaust gas recirculating control circuit
P0443 evaporator emission system purge control valve circuit

---------- Post added at 06:40 PM ---------- Previous post was at 06:39 PM ----------

But my engine still vibrates at idle ford checked those codes and said those where all good .
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Old 11-04-2013, 07:56 PM   #12
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Have you tried disconnecting the battery to reset the computer?
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Old 11-04-2013, 09:00 PM   #13
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Definitely an electrical issue.

Check all of the wiring harnesses you can find under the hood. Especially the o2 sensor and EGR harnesses.
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Old 11-04-2013, 10:54 PM   #14
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Yes I disconnected the battery and they checked all the harnesses and they where all good
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Old 11-05-2013, 05:07 AM   #15
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Any wiring mods done in engine bay by you or previous owner?
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Old 11-05-2013, 06:10 AM   #16
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Are those codes you posted back, meaning they are set back in the box and the check engine light is back on? How many miles are on this car?

You may have bad O2 sensors.
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Old 11-05-2013, 10:05 AM   #17
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Not that I know of.

---------- Post added at 11:05 AM ---------- Previous post was at 11:05 AM ----------

I'm not sure and 58,000
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Old 11-05-2013, 10:14 AM   #18
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What the heck is wrong with that dealer

They have the codes and can't tell whats wrong. DUH!!!! I can't understand this at all.
I think Bucko is right again on this one.
The OP needs to go to another dealer and forget about the Dealer that wants to just start replacing parts and screwing the OP out of $$$$$ and not just fixing the parts that need to be replaced.
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2012-candy red- V-6 MCA, Automatic Trans. CFM Valve cover breather. MMD blackTail light trim.Magnaflow axle back street mufflers, JLT oil catch can.MMD hood struts.
Airaid Cold Air intake. red caliper covers, 3.7L performance engine cover, Flat black hood spears.Boss 302 strut brace, CDC rear panel, Trunk Cargo net,--Dash carpet cover,
Viser stickers to cover ugly yellow warning crap,Aluminum driveshafft and Swarr Bar.
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Old 11-05-2013, 10:27 AM   #19
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I think I'm gone just take it to a different ford and see what they say
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Old 11-05-2013, 11:05 AM   #20
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Is the PCM under warranty for 8 years/80,000 miles ?
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Old 11-05-2013, 12:37 PM   #21
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I do believe it is eight years

I think it was a government thing to insure that all the auto/truck manufactures would not skimp on durability or quality of the computers they use in cars due to emissions and safety. I don't think when I read it that miles were mentioned at all.
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2012-candy red- V-6 MCA, Automatic Trans. CFM Valve cover breather. MMD blackTail light trim.Magnaflow axle back street mufflers, JLT oil catch can.MMD hood struts.
Airaid Cold Air intake. red caliper covers, 3.7L performance engine cover, Flat black hood spears.Boss 302 strut brace, CDC rear panel, Trunk Cargo net,--Dash carpet cover,
Viser stickers to cover ugly yellow warning crap,Aluminum driveshafft and Swarr Bar.
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Old 11-05-2013, 03:31 PM   #22
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Oh ok I'm going to ford to get the PCM diagnosed
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Old 11-05-2013, 04:19 PM   #23
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All of the bad codes seem to be related

Quote:
These are the codes that I got P0135 oxygen sensor heater bank 1 sensor 1
P0141 oxygen heater circuit bank 1 sensor 2
P0155 oxygen heater circuit bank 2 sensor 1
P0181 oxygen sensor heater circuit bank 2 & sensor 2
P0403 exhaust gas recirculating control circuit
P0443 evaporator emission system purge control valve circuit

Maybe somebody put leaded gas or an additive in your car at one time.


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2012-candy red- V-6 MCA, Automatic Trans. CFM Valve cover breather. MMD blackTail light trim.Magnaflow axle back street mufflers, JLT oil catch can.MMD hood struts.
Airaid Cold Air intake. red caliper covers, 3.7L performance engine cover, Flat black hood spears.Boss 302 strut brace, CDC rear panel, Trunk Cargo net,--Dash carpet cover,
Viser stickers to cover ugly yellow warning crap,Aluminum driveshafft and Swarr Bar.
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Old 11-06-2013, 05:54 AM   #24
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That could be...if so, the O2's are certainly shot, as they have a sensitive coating on them, and the cats may be clogged.
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Old 11-06-2013, 06:55 AM   #25
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I'm guessing that is the problem

I just can't understand why some dealers are soooooo freakin bad when it comes to stuff like this. Are they that greedy or are they just plain stupid.
When you take your car in to get something repaired that is wrong with it , They have no mechanics trained well enough to use the diagnostic equipment and get the repair done. All they want to do is start changing unrelated parts before getting to the problem that needs to be attended to.

I sure hope his cats are not toast, Of course if what ever messed up all of the sensors could have ruined the cats.

I'm positive that there is not a thing wrong with his CPU. It seems to have pointed out the sensor problems. I guess it is doing what it is supposed to be doing. Giving codes for bad sensors.

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2012-candy red- V-6 MCA, Automatic Trans. CFM Valve cover breather. MMD blackTail light trim.Magnaflow axle back street mufflers, JLT oil catch can.MMD hood struts.
Airaid Cold Air intake. red caliper covers, 3.7L performance engine cover, Flat black hood spears.Boss 302 strut brace, CDC rear panel, Trunk Cargo net,--Dash carpet cover,
Viser stickers to cover ugly yellow warning crap,Aluminum driveshafft and Swarr Bar.
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Old 11-06-2013, 11:05 AM   #26
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The CPU is as good as the inputs it receives from the sensors.

Since this Mustang is out of warranty, I'd find a good shop to properly diagnose and repair it. The OP is not stuck with using the local Ford service center.

Even though it appears to be O2's based on the stored codes, I would not run out and buy them. They are not cheap, and tossing parts at a problem gets expensive quick.

Talk to some car folks in your area; find a reputable shop and get it diagnosed.
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Old 11-06-2013, 01:42 PM   #27
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Ok thanks will do guys and let you guys know what happens
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Old 11-26-2013, 05:41 AM   #28
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Originally Posted by TymMcc View Post
Ok thanks will do guys and let you guys know what happens
Any update?
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Old 11-26-2013, 05:47 AM   #29
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Hey not yet still haven't had time for someone to look at it.. And I'm still trying to get any ideas from people because I keep paying for these diagnostics and no one knows
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