Results 1 to 4 of 4

Thread: Anyone know what this does? (PIC)

  1. 07-05-2006, 08:08 PM #1
    Gearbox
    Gearbox is offline
    Senior Member Gearbox's Avatar
    Join Date
    Mar 2006
    Posts
    271

    Anyone know what this does? (PIC)

    Pulled the interior completely out of my 71 S today and noticed two non factory red wires coming from the dash and running to the engine compartment via the shifter tunnel. On the dash, there was this red very period looking push button that blended in with all the other switches (reason I never noticed it before) with one wire running to the fuse box for power and the other to a soleniod on top of the fuel filter (see pic). I vaguely remember the original owner telling me about the switch having to do with starting the car, but that was 18 years ago and I never had to use it. Any ideas on how this works? Thanks Allan
    Attached Images Attached Images  
    1971 911S with Factory Recaro Sport Seats, 100% original, Bahia Red/Black

    1974 914 2.0 Yellow/Black

    2006 Cayman S Artic Silver/Terrecotta (Pending)

    When you think in you're in full control, you're just not driving fast enough
    Reply With Quote Reply With Quote
  2. 07-05-2006, 09:37 PM #2
    bobmagyar
    bobmagyar is offline
    Senior Member
    Join Date
    Apr 2003
    Posts
    640
    That is a "driver" operated MFI cold start solenoid.

    Usually these are operated via a thermal/time switch but you car has been modified to be operated by the driver.

    The wire on top of your solenoid used to be connected to the engine harness and then to the time switch but now is wire to a switch on your dash.

    This mod and the cold start in general is subject of much debate. Do a search and you can for you own opinion on how you want to proceed. Remove, keep, restore to original...
    1970 911S Targa
    On the road again soon.
    Reply With Quote Reply With Quote
  3. 07-06-2006, 09:54 AM #3
    RickS
    RickS is offline
    Blessed be the lowered RickS's Avatar
    Join Date
    Nov 2002
    Location
    Worshington State
    Posts
    1,360
    I installed the same mod on my car after my thermal/time switch went south. I place the key in the accessory position (you can hear the fuel pump running) press the switch for a count of 3, release, and hit the ignition. It works for me, but then one man's works are anothers...
    71 914 3.0, 82 SC, ESR 376, RG 307

    "The problem with the world is, the ignorant are cock-sure and the intelligent are full of doubt." Bertram Russell
    Reply With Quote Reply With Quote
  4. 07-06-2006, 10:34 AM #4
    LeafGreen
    LeafGreen is offline
    Senior Member LeafGreen's Avatar
    Join Date
    Sep 2004
    Posts
    127
    I ran mine disconnected and plugged with no ill effects, plus I think it only kicks in when temps are much colder than a you know what...... I suppose pushing a small dowel pin inside the hose and hooking it back up will disable it while retaining the stock look.
    Leaf green 72T, SOLD!
    Gone back to my MoPar roots!
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules


Message Board Disclaimer and Terms of Use
This is a public forum. Messages posted here can be viewed by the public. The Early 911S Registry is not responsible for messages posted in its online forums, and any message will express the views of the author and not the Early 911S Registry. Use of online forums shall constitute the agreement of the user not to post anything of religious or political content, false and defamatory, inaccurate, abusive, vulgar, hateful, harassing, obscene, profane, sexually oriented, threatening, invasive of a person's privacy, or otherwise to violate the law and the further agreement of the user to be solely responsible for and hold the Early 911S Registry harmless in the event of any claim based on their message. Any viewer who finds a message objectionable should contact us immediately by email. The Early 911S Registry has the ability to remove objectionable messages and we will make every effort to do so, within a reasonable time frame, if we determine that removal is necessary.