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2006 mazda 6 has starting issues. battery is new, alternator checked and starter checked, all good. cannot jump start car with battery terminals attached. if one terminal on battery is removed, or both and a jump pack is attached to the battery leads, car will start. also if battery terminals are removed and jumper cables attached to battery and disconnected terminals, car starts. terminals on battery has been replaced. ground wires from battery to body and transmission have been replaced as well. what is the issue?? is it relays or what? I have checked everything as far as grounds and have made sure a good connection is being made.
 

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New battery is good...right terminals. Has a good charge...eliminated the battery starter alternator as being an issue. It's an electrical issue somewhere either a relay or something
 

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if battery terminals are removed and jumper cables attached to battery and disconnected terminals, car starts.
Here you are referring to the new battery (not an extra one) and you are doing this when it is installed in the vehicle, right?
 

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Only thing that comes to mind is that the battery terminals are not making good contact with the battery. Check if there is some protective coating on them, maybe sand them a bit and make sure you tight them properly.
 

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2006 mazda 6 has starting issues. battery is new, alternator checked and starter checked, all good. cannot jump start car with battery terminals attached. if one terminal on battery is removed, or both and a jump pack is attached to the battery leads, car will start. also if battery terminals are removed and jumper cables attached to battery and disconnected terminals, car starts. terminals on battery has been replaced. ground wires from battery to body and transmission have been replaced as well. what is the issue?? is it relays or what? I have checked everything as far as grounds and have made sure a good connection is being made.

Have you load tested the battery? If there is an internal short (damaged plate inside the battery) the circuit will fail and not work.
 

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Ok so everyone is clear on this, IT IS NOT THE BATTERY. There is another issue. It's electrical. Be nice if an actual mechanic would post on this thread. Please read before you suggest anything more on the battery, because that's not the issue it's somewhere other than that. Thanks
 

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If you want actual mechanics then stop posting here and go to a mechanics website, there are plenty out there. Not free by the way.

Your last post is extremely rude.... good luck with your issue.
 

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A lot of people on here are more than capable of suggesting things that could fix the issue. Many have been through the trenches with these cars or any car for that matter. Without being right in front of the car, it's hard for us to tell you exactly wtf is wrong with your car. People have already said check the battery. Even though brand new or whatever, IT COULD BE BAD! Check the terminals. THEY COULD BE BAD, MAKE SURE THEY ARE TIGHT!!. Check the cables from 1 end to the other. THEY COULD BE BAD!!! HELL, YOU COULD HAVE A BAD IGNITION SWITCH.

Does it even try to crank when everything is installed correctly??

There was a thread just this week that had an electrical issue and they even had it towed to a shop. Guess what, it was a bad terminal.

Oh and btw, I was trained in auto mechanics but I don't do it as a job. Just because one may not do it for work, doesn't mean that they are not mechanics.
 

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Ok so everyone is clear on this, IT IS NOT THE BATTERY. There is another issue. It's electrical. Be nice if an actual mechanic would post on this thread. Please read before you suggest anything more on the battery, because that's not the issue it's somewhere other than that. Thanks
Lol, go pay an actual mechanic to tell you what it is then.
 

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...

There was a thread just this week that had an electrical issue and they even had it towed to a shop. Guess what, it was a bad terminal.

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I remember that one! I could almost relate because in my case, it was a lose terminal ground to my transmission. I could almost laugh that I had the car towed for a very simple problem.

Since he said that it's not the battery, perhaps I'll borrow these words:



.... good luck with your issue.



Lol, go pay an actual mechanic to tell you what it is then.
 

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Couple of nights a go my daughter calls me and says here car won't run, just quit.


Couple of folks stopped to try and help and thought (for some reason) it was the alternator. After her telling me the symptoms I said it just about has to be the battery. She says "NO, it's not the battery", there are folks here that say that's not it.



She had the car towed.



Long story short, it was the battery.



Best of luck OP, hard to diagnose car issues without having ever seen the car or know anything about it.
 

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2006 mazda 6 has starting issues. battery is new,
This does not mean it works. Load testing off the car will verify for sure.

alternator checked and starter checked, all good.
Were these bench tested or did you/someone plug something into the lighter port or similar?
cannot jump start car with battery terminals attached.
This means either the cables you are using are having issues (surprisingly common with cheaper cables) or the circuit cannot be completed. Since you can make a different circuit with the jump pack and it works that means the circuit on the car is faulty.
The only part of the circuit you are removing to get the car to run is the battery.

This is why everyone is saying it is the battery.


if one terminal on battery is removed, or both and a jump pack is attached to the battery leads, car will start. also if battery terminals are removed and jumper cables attached to battery and disconnected terminals, car starts.
Well there you have it. Looks a lot like a bad "new" battery.

terminals on battery has been replaced. ground wires from battery to body and transmission have been replaced as well. what is the issue?? is it relays or what?
Are you using different relays when the jump pack is installed? If not, then I would say no, its probably the battery.

I have checked everything as far as grounds and have made sure a good connection is being made.
Are you using an ohmmeter for this?

In order for everything (electrical) to work the electrons need to make it from the negative pole, around the circuit, and back to the negative through the positive. This is not happening when the battery is connected but does happen when it is bypassed.
 

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This is the funniest post ever. So when the "good" battery is removed from the equation the car starts. Let me tell you about my lawnmower. I had to jump start it first time out this season. It started but when I went to engage the electrically driven mower Blade solenoid I got nothing. I pulled it in the garage spent an hour removing and testing it to find out it was good. Then I bought a new battery and it worked fine. My old battery was so dead it actually swallowed current from the "alternator "(stater), not allowing the solenoid to engage. Moral of the story. If it looks like a dead battery, if it acts like a dead battery, it's a dead battery.
 

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More then likely if it is the battery he wont come back and admit it.
I kinda hope they do come back to say something. Any "No start" thread that comes back with what the cause was or updated as "fixed" can help the forum. Maybe the next person that has the issue can see what fixed it and not have to pay someone. Let's save the 1st gens!!

Plus I kinda want to see what it was:grin2:
 

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I hear what your saying DJ I have owned 2 Mazda 6 and before that the 626. I love the way the car handles and she sure does have some get up and go. I recently got the pleasure of change my spark plugs and coils on the 6 cylinder engine and believe me it was so much fun. Oh lets not forget the T coolant connector decided to break those dang things are really fragile. But luckily Rock Auto is darn reasonable on their parts.
 
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