Early 914 brake light switch |
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Early 914 brake light switch |
isdyl |
Sep 16 2018, 01:50 AM
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#21
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Member Group: Members Posts: 113 Joined: 13-June 18 From: Woking, UK Member No.: 22,217 Region Association: England |
Brilliant - 914Sixer has sent me one - thank you very much!
Here is the car by the way. Still a few jobs to do but not too far off being on the road. Attached image(s) |
isdyl |
Sep 23 2018, 01:39 PM
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#22
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Member Group: Members Posts: 113 Joined: 13-June 18 From: Woking, UK Member No.: 22,217 Region Association: England |
Its arrived! Thank you very much again.
Dylan |
isdyl |
Apr 11 2019, 03:07 AM
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#23
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Member Group: Members Posts: 113 Joined: 13-June 18 From: Woking, UK Member No.: 22,217 Region Association: England |
Hi, sorry to resurrect my old thread, but I'm still having a few issues with brake pressure. I've done quite a lot of searching around but before I waste any more time removing wheels again I thought I'd describe my symptoms and see if I'm barking up the wrong tree!
I replaced the brake pressure switch kindly sent to me by 914Sixer and have bled the brakes a couple of times.When I'm driving or stationary with the engine on I get a clicking/ticking from the flasher relay (but no warning light flashing). If I press the brake pedal the clicking/ticking stops for about 5 seconds and then starts again. It I apply the parking brake when stationary the light on the dash flashes in time with the ticking (as it should). Indicators all work as they should. In some places I have read that the switch needs resetting, but I don't think this is that type as there is no reset button. I wonder if I just need to keep bleeding the brakes - maybe I have air trapped somewhere? I have read that air can get trapped in the brake proportioning valve - could this cause this problem please? Thanks, Dylan |
914Sixer |
Apr 11 2019, 06:28 AM
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#24
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914 Guru Group: Members Posts: 8,845 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region |
Check your hand brake switch. Make sure it is pushing it all the way down. Easy to take out the screw and check for movement or corrosion. It is a single pole VW door switch. There is NO reset on MC switch.
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Spoke |
Apr 11 2019, 07:42 AM
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#25
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Jerry Group: Members Posts: 6,964 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None |
I replaced the brake pressure switch kindly sent to me by 914Sixer and have bled the brakes a couple of times.When I'm driving or stationary with the engine on I get a clicking/ticking from the flasher relay (but no warning light flashing). If I press the brake pedal the clicking/ticking stops for about 5 seconds and then starts again. It I apply the parking brake when stationary the light on the dash flashes in time with the ticking (as it should). Indicators all work as they should. In some places I have read that the switch needs resetting, but I don't think this is that type as there is no reset button. I wonder if I just need to keep bleeding the brakes - maybe I have air trapped somewhere? I have read that air can get trapped in the brake proportioning valve - could this cause this problem please? Thanks, Dylan This phantom clicking of the flasher relay is unfortunately not that rare. I'm working with a 911 owner with the same problem. The issue seems that if there is some electrical leakage path from pin 49a to ground the flasher will flash (click) without any lights lighting up. If the leakage path is through the brake warning light, it might be so that there is enough current to trigger the flasher but not actually light up the bulb. You can check this by either popping out the dash gauge and removing the brake warning bulb. If the clicking stops then it has to do with the wiring of the brake warning light. Attached thumbnail(s) |
isdyl |
Apr 11 2019, 03:03 PM
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#26
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Member Group: Members Posts: 113 Joined: 13-June 18 From: Woking, UK Member No.: 22,217 Region Association: England |
Thank you - I'll have a good look at that. D
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isdyl |
Jul 10 2019, 07:43 AM
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#27
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Member Group: Members Posts: 113 Joined: 13-June 18 From: Woking, UK Member No.: 22,217 Region Association: England |
Hi - sorry its taken me a long time to follow this up! I removed the wires to the warning lamp and yes the ticking has stopped - hooray! I'll have to start hunting around for the short/leakage now. Thanks - I'll start near the parking brake area as that switch is a bit dodgy. D
I replaced the brake pressure switch kindly sent to me by 914Sixer and have bled the brakes a couple of times.When I'm driving or stationary with the engine on I get a clicking/ticking from the flasher relay (but no warning light flashing). If I press the brake pedal the clicking/ticking stops for about 5 seconds and then starts again. It I apply the parking brake when stationary the light on the dash flashes in time with the ticking (as it should). Indicators all work as they should. In some places I have read that the switch needs resetting, but I don't think this is that type as there is no reset button. I wonder if I just need to keep bleeding the brakes - maybe I have air trapped somewhere? I have read that air can get trapped in the brake proportioning valve - could this cause this problem please? Thanks, Dylan This phantom clicking of the flasher relay is unfortunately not that rare. I'm working with a 911 owner with the same problem. The issue seems that if there is some electrical leakage path from pin 49a to ground the flasher will flash (click) without any lights lighting up. If the leakage path is through the brake warning light, it might be so that there is enough current to trigger the flasher but not actually light up the bulb. You can check this by either popping out the dash gauge and removing the brake warning bulb. If the clicking stops then it has to do with the wiring of the brake warning light. |
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