 Hazard Switch kills all flashing, Failed inspection on the Flashers......ugh |
|
|
|
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. |
|
|
  |
| ctc911ctc |
 Jan 16 2020, 01:23 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 893 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States 
 |
'74, 2.0
I took the car into the gas station so I may donate 35 to the state of MA. Car has not been on the road since late 80's. All was good but the inspector pulled the hazard flasher......NOTHING (IMG:style_emoticons/default/headbang.gif) When the hazard flasher is pulled, the emergency brake flasher, left/right flasher, all stop working. Going to check the power to the flasher. Fuse checked out OK, Seems like a quick fix, will advise once I figure this out.......sigh Any thoughts? |
   |
 
|
| 914Sixer |
Jan 16 2020, 01:25 PM
Post
#2
|
|
914 Guru Group: Members Posts: 8,894 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
|
Sounds like flasher is shorting out internally.
|
|
|
|
| ctc911ctc |
Jan 16 2020, 01:36 PM
Post
#3
|
|
Senior Member Group: Members Posts: 893 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States
|
Perhaps - no fuse blown - me thinks perhaps an open circuit when the switch is pulled or no power to switch
QUOTE(914Sixer @ Jan 16 2020, 02:25 PM)  Sounds like flasher is shorting out internally. |
|
|
|
| lierofox |
Jan 16 2020, 02:58 PM
Post
#4
|
|
Member Group: Members Posts: 256 Joined: 23-June 15 From: Paso Robles, CA Member No.: 18,880 Region Association: Southern California
|
QUOTE(ctc911ctc @ Jan 16 2020, 11:36 AM) Perhaps - no fuse blown - me thinks perhaps an open circuit when the switch is pulled or no power to switch QUOTE(914Sixer @ Jan 16 2020, 02:25 PM) Sounds like flasher is shorting out internally. The hazard switch is fed power from 2 sources: Fuse 9 (when the key is on) when the hazard switch is pushed in, to provide power to the turn signals. Fuse 11 when the hazard switch is pulled out. Does your interior light come on with the doors open? Because that's fed from the same fuse 11. |
|
|
|
| ctc911ctc |
Jan 16 2020, 04:24 PM
Post
#5
|
|
Senior Member Group: Members Posts: 893 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States
|
FIXED The fuse in position 11 was not copper but some type of aluminum/tin, etc..... replaced with a good, new fuse. Passed inspection - First time this car has been on the road since the late 80s. THANK YOU Lierofox (IMG:style_emoticons/default/pray.gif) QUOTE(lierofox @ Jan 16 2020, 03:58 PM) QUOTE(ctc911ctc @ Jan 16 2020, 11:36 AM) Perhaps - no fuse blown - me thinks perhaps an open circuit when the switch is pulled or no power to switch QUOTE(914Sixer @ Jan 16 2020, 02:25 PM) Sounds like flasher is shorting out internally. The hazard switch is fed power from 2 sources: Fuse 9 (when the key is on) when the hazard switch is pushed in, to provide power to the turn signals. Fuse 11 when the hazard switch is pulled out. Does your interior light come on with the doors open? Because that's fed from the same fuse 11. |
|
|
|
| Spoke |
Jan 16 2020, 04:44 PM
Post
#6
|
|
Jerry Group: Members Posts: 6,986 Joined: 29-October 04 From: Allentown, PA Member No.: 3,031 Region Association: None
|
Glad you got the issue corrected.
With the 4-way flasher switch disengaged, the flashers are powered through fuse 9 and the ignition switch. Engaging the 4-ways transfers the power from fuse 9/ignition switch to fuse 11. Attached image(s) 
|
|
|
|
| ctc911ctc |
Jan 17 2020, 11:08 AM
Post
#7
|
|
Senior Member Group: Members Posts: 893 Joined: 9-June 18 From: boston Member No.: 22,206 Region Association: North East States
|
Looking at this it seems to me that the engineers were trying to reduce circuits, wiring, weight but at the same time introduced a few complexities. LOVE IT. Good German Engineering.
Thank You! QUOTE(Spoke @ Jan 16 2020, 05:44 PM) Glad you got the issue corrected. With the 4-way flasher switch disengaged, the flashers are powered through fuse 9 and the ignition switch. Engaging the 4-ways transfers the power from fuse 9/ignition switch to fuse 11. |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 28th May 2024 - 02:59 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.