|
|
|
|
| Author |
|
|
Registered
Join Date: Aug 2009
Location: Ottawa, Ontario
Posts: 289
|
86 carrera brake lights
Hi guys,
I have noticed that although my brake lights work, they only work when I really jamb the brakes from speed. If I am just driving around and brake normally, they don't come on, if I wait to the last minute and for example slow from 80km to 0 by jambing the brakes, they come on. Needless to say I am going to get pulkled over either way, one for now brake lights driving normal, or two, for driving like an idiot and braking like a madman at the last minute. Any thoughts on what could cause this Thanks |
||
08-31-2009, 03:40 AM
|
|
|
Registered
|
This is a commom issue with Carreras. The brake light switch(s) are located on the brake master cylinder and they get old and "slow". Besides the brake lights these switches also disengage the cruise control. So if you use the CC you have to apply excessive brake pressure to slow/disengage, that can be annoying and dangerous. You might find yourself exiting a highway and brushing the brakes to slow down and turn off the CC and sudddenly you are deep into an exit ramp and the CC is still on! Ask me how I know...
You have two options...Replace the switches or replace the entire master cylinder. If you replace the entire M/C you might run into a common issue with the connectors not fitting the new switches. See this thread for one of many easy solutions. Brake light switch connector spacing problem. A search will find other options. Good luck...
__________________
'88 Carrera Cab 3.2 Diamond Blue Metallic - ERP Polybronze Bushings, ERP Monoballs, SW Chip, Bilstein Sports, 930S Steering Wheel, DAS Rollbar, Sparco 5pt Harness, Hunsaker Sport Seats, Dansk Pre-Muffler, MK 1in-1out Exhaust, Magnecor KV8.5 Wires '86 944NA, Sunroof Delete, Track Rat, Full Cage '72 914 1.7 Guards Red / '02 Audi S4 Light Silver Metallic Last edited by aj88cab; 08-31-2009 at 10:30 AM.. |
||
|
08-31-2009, 06:11 AM
|
|
|
Registered
Join Date: Aug 2009
Location: Ottawa, Ontario
Posts: 289
|
Thanks, that is exactly what I was looking for, going to give that a try
Cheers |
||
|
08-31-2009, 06:18 AM
|
|
|
Wayah Road Warrior
Join Date: Jun 2002
Location: Greenville, SC
Posts: 1,536
|
__________________
02 996tt White 87 930 GP White (Sold) 87 911 Targa Guards Red(Sold) |
||
|
08-31-2009, 08:36 AM
|
|
|
Registered
|
Contact DRACO A5OG for the BLS relay in Shadetree's link. It'll prevent you from having to replace them again. Also, when you do replace them, make sure you prefill the BLS' with brake fluid before putting them in. This will ensure there are no air bubbles in BLS (ask me how I know).
__________________
Josh 85 M491 Coupe - "Fat Bastard" |
||
|
08-31-2009, 10:18 AM
|
|
|
Registered
Join Date: Sep 2007
Location: Connecticut
Posts: 438
|
Yup, switches are beginning to fail.
Very common problem. It happened to me three weeks ago. I replaced my brake switches and added an arc suppressor. Total cost was around $55 and should last forever. Install took less than an hour. Read this: Brake Lights and this: No brake lights Get the arc suppressor here (no affiliation, just a happy customer) or search "BLSAS" for more info: http://forums.rennlist.com/marketplace/showproduct.php/product/13/date/1240673640
__________________
1987 911 Coupe, Diamond Blue Metallic 2006 Cayman S, Seal Gray 1983 911 Targa, Black: The Dirty 911 (GRM) Last edited by Woodyhfd; 08-31-2009 at 05:20 PM.. |
||
|
08-31-2009, 01:14 PM
|
|
|
|
abides.
|
Woody, your links are all bad.
__________________
Graham 1984 Carrera Targa |
||
|
08-31-2009, 02:36 PM
|
|
|
Registered
Join Date: Sep 2007
Location: Connecticut
Posts: 438
|
Quote:
__________________
1987 911 Coupe, Diamond Blue Metallic 2006 Cayman S, Seal Gray 1983 911 Targa, Black: The Dirty 911 (GRM) |
||
|
08-31-2009, 05:21 PM
|
|
|
Registered
Join Date: Aug 2009
Location: Ottawa, Ontario
Posts: 289
|
Does anyone know what page this is on in the Bentley manual, I looked forever and can't even find a reference to these switches. Thanks
|
||
|
09-30-2009, 04:54 AM
|
|
|
Registered
|
470-8,9 shows the procedure for removing/replacing the master cylinder. The switches are referenced there (470-9). There really isn't a specific section for replacing the switches. The "No Brake Lights" link above pretty well covers the proceedure.
__________________
'88 Carrera Cab 3.2 Diamond Blue Metallic - ERP Polybronze Bushings, ERP Monoballs, SW Chip, Bilstein Sports, 930S Steering Wheel, DAS Rollbar, Sparco 5pt Harness, Hunsaker Sport Seats, Dansk Pre-Muffler, MK 1in-1out Exhaust, Magnecor KV8.5 Wires '86 944NA, Sunroof Delete, Track Rat, Full Cage '72 914 1.7 Guards Red / '02 Audi S4 Light Silver Metallic Last edited by aj88cab; 09-30-2009 at 05:06 AM.. |
||
|
09-30-2009, 05:01 AM
|
|
1988 Porsche Carrera Cabriolet 3.2
Fat Bastard
1984 Porsche Carrera Targa
