I found this next to my ECU

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November 28, 200124 yr

I opened my ECU yesterday to check if there is an aftermarket chip and I have noticed that next to my ECU (at the left side) there is another smaller box. I believe all 300ZX do have this box. What really concerns me is that there is a connector that goes to that smaller box but is unplugged.

Is that the way it should be?

What that box is for? Should I put it back to its place?

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November 28, 200124 yr

Not sure which one you mean. A picture would help. One of these ?

Not the one at the very front of course - that's the traction control.

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November 28, 200124 yr

Could it be the cruise control unit? Does your cruise control work?

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November 28, 200124 yr

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Originally posted by AndyP:
Not sure which one you mean. A picture would help. One of these ?

Not the one at the very front of course - that's the traction control.

I think is the one with the S. But is slightly different. Mine is a 1990 TT Manual.

Does it have cruise control?

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Check engine light comes on and off sporadic.

Hello, I have a 1996 twin turbo manual with 64k miles. I recently started having the check engine light come on sometimes and other times it doesn't. When I checked the codes these are what I got : If anyone has had these same codes what did they change to fix the problem. Car runs fine with check engine light on but want to fix issue. Any help would be greatly appreciated. Thank you.
P0400
P0136
P1150
P1155

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Thanks for the recommendations, few different places recommended Gorilla so I will get in touch with them.

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Me again.
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So I have two questions:
Is this possible without dropping the gearbox?
I wanted to test it was definitely the switch before I went crazy getting it out, so unplugged the old one and plugged the new one in, put car in reverse and switched on ignition and then pressed the end of the switch in but it still didn’t turn the lights on. Does the switch work this way? That you can push the plunger end in and it should turn on?

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By RobHowl · Saturday at 17:112 days
Tyre size recommendations

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https://tiresize.com/tyre-size-calculator/

By craig · Friday at 22:093 days

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I found this next to my ECU

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