Brake warning light - Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z
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post #1 of 7 (permalink) Old 09-26-2016, 03:12 PM Thread Starter
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Brake warning light

After searching for about 30 minutes there isn't much on this subject except brake fluid being low. Well, my brake fluid isn't low.

Here's what I have the brake warning light comes on on cold starts, right turns, and hard acceleration. It goes off when taking left turns.

Pedal pressure is good brake fluid is normal everything feels normal.

Thoughts?
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post #2 of 7 (permalink) Old 09-26-2016, 06:28 PM
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Parking brake switch (?) or movement/crud in connector at master cylinder?

zippityzda
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post #3 of 7 (permalink) Old 09-26-2016, 10:22 PM Thread Starter
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Crud is possible. Someone elsewhere brought up PS fluid? Is it possible that can cause it?
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post #4 of 7 (permalink) Old 09-27-2016, 12:49 AM
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first thought
if you would really like answers that would help you and avoid flames give the following info when you post: year of car, n/a or turbo engine, stick or slushbox, digital or analog dash. Most of us can tell by the year what model you have ie 85T is a turbo z31. Z cars come in many flavors and they are all different. example 84,85,86 Z31's pretty comparable. there were changes in 87,88,89. in addition 300ZX can refer to two completly different cars the Z31 and the Z32. No mindreaders here the more info you can post the more likely you get a cogent useful answer. The cars with L engine (straight six) changed almost yearly from their introduction. A 240Z and and a 280Z have similarities but they can also have wide variance.

power steering fluid only if you were foolish enough to use it instead of brake fluid.

86T, 350 Nismo 08 (#1415) gone but fondly remembered 81T, 83T, 83, 85T, 86T, 96TT
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post #5 of 7 (permalink) Old 09-27-2016, 02:37 AM
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90-96 Forum sort of narrows it down a good bit.

Take the connector off and spray it clean, then try it. If it's in the switch itself, which is likely a reed switch with a magnetic float, you may be looking at a new MC.

Can you tell if the switch mount is threaded or just a rubber plug insert? Not having any luck finding a replacement switch at auto parts vendors. Maybe at other sources of this type of switch.

zippityzda
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post #6 of 7 (permalink) Old 09-27-2016, 01:58 PM Thread Starter
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Quote:
Originally Posted by rogerz View Post
first thought
if you would really like answers that would help you and avoid flames give the following info when you post: year of car, n/a or turbo engine, stick or slushbox, digital or analog dash. Most of us can tell by the year what model you have ie 85T is a turbo z31. Z cars come in many flavors and they are all different. example 84,85,86 Z31's pretty comparable. there were changes in 87,88,89. in addition 300ZX can refer to two completly different cars the Z31 and the Z32. No mindreaders here the more info you can post the more likely you get a cogent useful answer. The cars with L engine (straight six) changed almost yearly from their introduction. A 240Z and and a 280Z have similarities but they can also have wide variance.

power steering fluid only if you were foolish enough to use it instead of brake fluid.
As mentioned below it is the 90-96 section but fair point nonetheless. Can't believe I didn't put it it in.

94 NA manual trans 2+0 ttop car.
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post #7 of 7 (permalink) Old 09-27-2016, 02:03 PM Thread Starter
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Originally Posted by dumbestone View Post
90-96 Forum sort of narrows it down a good bit.

Take the connector off and spray it clean, then try it. If it's in the switch itself, which is likely a reed switch with a magnetic float, you may be looking at a new MC.

Can you tell if the switch mount is threaded or just a rubber plug insert? Not having any luck finding a replacement switch at auto parts vendors. Maybe at other sources of this type of switch.
I'm going to do that this weekend and top it off with brake fluid as well. It's over the min line but below the max I'll fill it up to the max to see if that changes anything.

It also definitely temp related. Wouldn't turn off on my drive to work this morning at all 55* out just went to lunch and it's 80* out and it'll turn off when I move the car to the left or take a left turn. Then naturally it comes back on during right hand turns. So, I don't think it's a dirty cinnection but cleaning them never hurts. Something seems stuck.
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