2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

What is this plastic box found on non turbo and turbo cars/series four?

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Old Aug 28, 2005 | 06:59 PM
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What is this plastic box found on non turbo and turbo cars/series four?

What is this box. Plastic box. It has it's name on it. It's found near the Knock box on a turbo. It is attached to the FRONT harness, passengers well, up and to the right?

It's name is MOTOR FAILURE. Sorry, but the engine runs just fine without it. Maybe a theft? suspension? whatever? box.

The Mazda number can be read on it.
Attached Thumbnails What is this plastic box found on non turbo and turbo cars/series four?-motorfailurebox.jpg  

Last edited by HAILERS; Aug 28, 2005 at 07:11 PM.
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Old Aug 28, 2005 | 07:34 PM
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Parts manual says A/T control unit for that part number
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Old Aug 28, 2005 | 07:38 PM
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Hailers - I'd agree with RxSevenSymphonies. I can definately tell you that my FC did NOT have that anywhere at all forward of the seats (the knock box on a turbo is on the passanger outside footwell, right?) So it's probably an A/T unit. The only suspension thing that I know of is in the VERY back of the car, near the rear window washer resivoir, and that's a very large silver box, with connections at the bottom.
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Old Aug 28, 2005 | 08:23 PM
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Originally Posted by RXSevenSymphonies
Parts manual says A/T control unit for that part number
Well I'll be darned. I'd have bet a twenty dollar bill I'd get no answers on that. Odd though that it was found also on a turbo car. Last time I looked they didn't have autos on turbo cars. Odd.
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Old Aug 28, 2005 | 09:14 PM
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Yea for the turbo section it just says control unit with no explanation of what it's for, but didn't they have auto turbo's over in japan, so maybe they used the same control unit for it?
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Old Aug 28, 2005 | 10:41 PM
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I did go to the parts fische AFTER you told me what it was, and sure enough it's for A/T cars. That's all I need to know. Once I saw A/T I lost interest. Just another plug to use as a source of power for ?????? whatever. Did I say THANK YOU? Thanks.
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Old Aug 28, 2005 | 10:53 PM
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Motor Failure
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Old Aug 29, 2005 | 11:45 AM
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[QUOTE=bcool]Motor Failure [/QU

Well I'll be. I did some research in the free, online fsm, Chapter 36 of the 87 fsm to be exact, and it appears this item is a Anti-Motor Failure Module. As long as it's plugged in the harness, the motor won't fail. That explains why I have no motor problems. Thanks for the help.
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Old Aug 29, 2005 | 11:51 AM
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Better leave it plugged in then!

It is an incredibly bizarre name to print on the thing. Must have lost something in translation! If that "90W" printed on it means 90 Watts, it sure eats up a whack of power! 7.5 amps.

Last edited by johnnyg; Aug 29, 2005 at 11:54 AM.
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Old Aug 29, 2005 | 12:11 PM
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Originally Posted by HAILERS
Well I'll be. I did some research in the free, online fsm, Chapter 36 of the 87 fsm to be exact, and it appears this item is a Anti-Motor Failure Module. As long as it's plugged in the harness, the motor won't fail. That explains why I have no motor problems. Thanks for the help.

LOL
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Old Aug 29, 2005 | 02:09 PM
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Damn!

I thought this little box what the knock box! lol Can anybody take a pic of the knock box to show me what it looks like?

thanks a lot.

l-p
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Old Aug 29, 2005 | 02:42 PM
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Originally Posted by TII '87
Damn!

I thought this little box what the knock box! lol Can anybody take a pic of the knock box to show me what it looks like?

thanks a lot.

l-p
You asked, and here it is. A genuine series four Knock Box. Series five are built in the ECU.

It's about twice the size of the MOTOR FAIL box. It's within inches of the Motor Fail box.
Attached Thumbnails What is this plastic box found on non turbo and turbo cars/series four?-knockbox.jpg  
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Old Aug 29, 2005 | 03:53 PM
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wow! that was quick!

thanks hailer.
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Old Dec 1, 2005 | 06:48 PM
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does the knock box have a removable plate on the back?
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Old Dec 2, 2005 | 04:26 PM
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How can something so little stop engine failure, I dont see it here!! If the engine is gonna fail nothing gonna stop it from doing it.
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Old Dec 2, 2005 | 05:38 PM
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Originally Posted by jgrts20
How can something so little stop engine failure, I dont see it here!! If the engine is gonna fail nothing gonna stop it from doing it.
Although there is such a box, much of this thread was tongue in cheek. Humor. Jest. Don't take any of my posts too seriously.
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Old Dec 2, 2005 | 05:59 PM
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No no, HAILERS, you're missing it. The big one is the knock sensor, that senses the knock, and then tells the little box when it's time to blow the motor. Then the Motor Failure box explodes your car.
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Old Dec 2, 2005 | 06:03 PM
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Originally Posted by HAILERS
What is this box. Plastic box. It has it's name on it. It's found near the Knock box on a turbo. It is attached to the FRONT harness, passengers well, up and to the right?

It's name is MOTOR FAILURE. Sorry, but the engine runs just fine without it. Maybe a theft? suspension? whatever? box.

The Mazda number can be read on it.

Dude, you didnt start it with out that did you?????


just kidding
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Old Dec 2, 2005 | 07:08 PM
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help me

would this box have n e thing to do wit spark???
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Old Dec 2, 2005 | 07:18 PM
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[QUOTE=HAILERS]
Originally Posted by bcool
Motor Failure [/QU

Well I'll be. I did some research in the free, online fsm, Chapter 36 of the 87 fsm to be exact, and it appears this item is a Anti-Motor Failure Module. As long as it's plugged in the harness, the motor won't fail. That explains why I have no motor problems. Thanks for the help.
yeah that little box was a hit at sevenstock 5....

i think it is some kinda relay box for the auxillary fan
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Old Dec 2, 2005 | 07:27 PM
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Sell it on E-bay as a special JDM module that ensures that your motor will not blow up. Some idiot would probly pay a bunch of cash for it.
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Old Dec 2, 2005 | 07:57 PM
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yeah man you totally could! Custom JDM control module, senses health of apex, oil, and coolant seals and slows the engine if it senses failure!

$3999
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Old Dec 3, 2005 | 12:32 AM
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i need to get one of them. is that buy it now or the auction price?
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Old Dec 3, 2005 | 12:43 AM
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Originally Posted by jono20
yeah man you totally could! Custom JDM control module, senses health of apex, oil, and coolant seals and slows the engine if it senses failure!

$3999
Make sure and add a Type-R sticker to the box, make a toggle switch coming off it as well for "SLOW" so people can slow down their cars when they arent making those mad quik shifts y0
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Old Dec 3, 2005 | 10:04 AM
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Originally Posted by j9fd3s
yeah that little box was a hit at sevenstock 5....

i think it is some kinda relay box for the auxillary fan

BINGO! That's what it is for. My lazy *** never looked at the wiring diagrams and the wire colors off its plug. You be top dog bro.

It's really a shame. I've looked at the electric fan schematic and even posted jpg's of it on the site, but never acutally looked for that Cooling Fan Control Unit.
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