 Blinking Brake light while driving, How do I figure out why... and resolve it? |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| Carlitos Way |
 Jun 23 2006, 10:19 AM
Post
#1
|
|
I did it MY WAY  Group: Members Posts: 1,337 Joined: 14-September 04 From: Simi Valley, CA Member No.: 2,757 Region Association: Southern California  |
I've got a 19mm master cylinder. The brake light blinks while I'm driving. It goes off if I raise the e-brake switch.
Any suggestions? |
   |
 
|
| Dr Evil |
Jun 23 2006, 10:27 AM
Post
#2
|
|
Send me your transmission! Group: Members Posts: 23,038 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region 
|
That is odd. Do you mean the light in the gauge? the reason it is odd is because the circuit gets its ground when the break lever is up which allows the contacts to touch inside the switch. When you put the lever down it breaks contact.
You could unscrew the single retaining screw for the switch under the lever and pull the switch out. Maybe something is grounding it out when the lever is down and the contacts are too dirty to work when it is up? When you have he switch out you can see what the deal is. If when it is out (not touching metal) it still causes blinking then your problem is somewhere else (I hope not). |
|
|
|
| Van914 |
Jun 23 2006, 02:58 PM
Post
#3
|
|
Van914 Group: Members Posts: 702 Joined: 5-January 03 From: Cincinnati, Ohio Member No.: 90 Region Association: Upper MidWest
|
Sometimes the Emeg. Brake handle will be bent a little and misss the contact swith to turn off the light. Just bent it to make sure it is pushing the contact down.
Van |
|
|
|
| Joe Ricard |
Jun 23 2006, 05:31 PM
Post
#4
|
|
CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
Would it blink with Parking brake on?
I know it blinks with problem in hydraulic system. Forgot to reset it this morning after a brake bleed. That's how I know. Never had a 914 with working Parking brake switch |
|
|
|
| Joe Bob |
Jun 23 2006, 06:05 PM
Post
#5
|
|
Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
Both...it blinks with the brake on and when the MC switch needs a reset after a bleed.
Sounds like the switch is having issues and thinks the e-brake is on. |
|
|
|
| swl |
Jun 23 2006, 06:14 PM
Post
#6
|
|
Senior Member Group: Members Posts: 1,409 Joined: 7-August 05 From: Kingston,On,Canada Member No.: 4,550 Region Association: Canada |
If none of the above works try tracking the brown wire that feeds the switch. It routes behind the seat and into the center tunnel. Look for a pinch point or frayed insulator
|
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 9th May 2025 - 01:52 PM |
Invision Power Board
v9.1.4 © 2025 IPS, Inc.