TB grounding on 05's - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #1 of 19 (permalink) Old 03-26-2006, 01:38 PM Thread Starter
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Was under the hood checking the grounding and such thinking i might try to help the the throttle lag by grounding the TB. I measured from the TB to the chassis ground and got 700K ohms, so i measured from the TB to the negative battery post and got the same. Looking at the threads about grounding and such I notice that in the pics of other cars compared to mine the 05 throttle body appears different. From the pics it appears that other years have something attached to the front of the TB where the ground wire is attached. On my 05 the front is clean. I didn't see any wires on the TB except for the plug in connector so i just picked a random bolt off of the TB and measured that to ground. Is this correct? All my other measurements were less than 5 ohms.

Has anyone with an 05 grounded the engine bay and have some advice or pics to share?
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post #2 of 19 (permalink) Old 03-26-2006, 01:40 PM
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Grounding from any spot on the TB to any chassis ground should accomplish the desired effect.


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post #3 of 19 (permalink) Old 03-26-2006, 02:15 PM
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Grounding from any spot on the TB to any chassis ground should accomplish the desired effect.
[/b]
It will accomplish nothing. If you ask me, "grounding kits" are just a waste of No. 4 wire that you can buy at Home Depot cheaper.

The throttle response it dictated by the PCU and the servo motor on the throttle body. - nothing more.

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post #4 of 19 (permalink) Old 03-26-2006, 02:30 PM
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He is asking about doing it himself. Grounding kits are not a waste of money, but don't expect unrealistic things from them. You will not get 20hp out of it. You will however get better throttle response and a smoother idle.

If I "asked you" then I would be getting misinformation. I have done a number of grounding spots to my car, and have lowered the resistance as a result.


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post #5 of 19 (permalink) Old 03-26-2006, 03:11 PM
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If I "asked you" then I would be getting misinformation. I have done a number of grounding spots to my car, and have lowered the resistance as a result.
[/b]
The only "misinformation" that you have is from the person who told you that wiring the TB housing to the engine block would actually do anything.

Just for a laugh, I'm going to play around with this and see what I can come up with...

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post #6 of 19 (permalink) Old 03-26-2006, 03:21 PM
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he's not wiring the tb to the engine block.


more like tb to ground.


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post #7 of 19 (permalink) Old 03-26-2006, 03:34 PM Thread Starter
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^ exactly I'm not using a kit either i was going to just ground one point with my own wire, as it is the only point with a high resistance to ground. Thanks for the info dabears
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post #8 of 19 (permalink) Old 03-26-2006, 03:47 PM
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^ exactly I'm not using a kit either i was going to just ground one point with my own wire, as it is the only point with a high resistance to ground. Thanks for the info dabears
[/b]

i still need to ground out my TB as well...

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post #9 of 19 (permalink) Old 03-26-2006, 03:51 PM
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he's not wiring the tb to the engine block.
more like tb to ground.
[/b]

The engine block IS part of the ground - just like any other part of the chassis.

I still think it won't do jack sh*t. We'll see what a little experimentation tells us...

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post #10 of 19 (permalink) Old 03-26-2006, 03:56 PM Thread Starter
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it may not noticeably reduce throttle lag, but it will provide a better ground, the tb is not part of the engine block
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