[Shotimes] Blown Fuse...Smoke

[Paul L Fisher]

Easy fix. Takes less than 10 minutes to replace and you don't even have to
re-bleed the brakes! On my '93 ATX, the only thing that didn't work was the
cruise.


Paul L Fisher

Visit my website: http://www.paul-fisher.com
SHOClub Member: http://www.shoclub.com
Amsoil dealer: http://www.paul-fisher.com/oil


-----Original Message-----
From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]
On Behalf Of Steve Weinrich
Sent: Friday, January 07, 2005 6:26 AM
To: (Test) Beckers, Shawn; shotimes@autox.team.net
Subject: Re: [Shotimes] Blown Fuse...Smoke

Shawn,

Deactivator Switch

The deactivator switch is a normally closed switch and replaces the vacuum
dump valve as a redundant safety feature in the system. Normally when the
brake pedal is depressed, an electrical signal from the brakelamp circuit to
the speed control amplifier (9D843) will disengage the system. Under
increased brake pedal efforts (5-10 lbs, engine running), the deactivator
switch mounted in the brake line will open and remove power to the speed
control servo clutch, releasing the throttle independent of the speed
control amplifier control. The deactivator switch is mounted to the
underside of the master cylinder.

It is a backup to remove power from the cruise circuit in the event of a
failure of the BOO.

The switch itself is leaking.  This is causing your short circuit and blown
fuse.  The shift interlock works off the same fuse so when the fuse blows,
the shifter cannot be removed when the ignition is in RUN  (you can still
move it with the switch in the OFF position, between LOCK and RUN).

Disconnecting the switch will only disable your cruise control.  As far as I
know, the switch is a dealer-only item.  This will allow the car to be
driven safely once the fuse is replaced.

At least the fuse blows on the SHO.  On the F150 from around 1999 - on, the
truck can catch on fire.  NHTSA is currently investigating that one.

Steve W


----- Original Message ----- 
From: "(Test) Beckers, Shawn" <SMBECKERS@CSBSJU.EDU>
To: <shotimes@autox.team.net>
Sent: Thursday, January 06, 2005 6:06 PM
Subject: [Shotimes] Blown Fuse...Smoke


> Hi all,
>
> I badly need a little help.  I recently started my car and found I
couldn't get it out of park.  After a little more messing around I also
noticed my brake lights weren't working.  So I checked the fuses.  Sure
enough the 15 amp fuse for the brake lights, cruise control, etc was blown
(fuse #1 on the schematic).  So I grabbed a spare 15 amp fuse and popped it
in.  No problem...that is until I saw the smoke coming from the engine.  I
quickly took the fuse out and popped the hood to see where the smoke was
coming from.  It appears that the smoke was coming from an electrical
connection that is either directly under or attached to the brake master
cylinder (I believe that's what it is anyway; it's on the driver's side
right under the brake fluid reservoir).  The wires appear to have melted a
bit.  Thinking I'd put the wrong fuse in I double checked.  No problem
there...I had used a 15 amp fuse.  Can someone tell me what this connection
is for and if it's safe to disconnect it a!
> nd then replace the fuse?  Normally I'd get it fixed, but I have my
Explorer in the shop right now getting the tranny rebuilt and my SHO is my
only vehicle at the moment.  And I'm a little strapped for cash thanks to
the tranny and would like to put off fixing this problem for a few weeks.
If the electrical component that was smoking was the problem, I'm hoping
disconnecting it and replacing the fuse will at least allow me to have brake
lights again.
>
> Any advice/help would be greatly appreciated.
> _______________________________________________
> Shotimes mailing list
> Shotimes@autox.team.net
> http://www.team.net/mailman/listinfo/shotimes
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