86 up 5KCSTQ Throttle switch repair + musings

[Dave Head <dhead@sundial.sundial.net>]

At 08:19 AM 2/19/97 -0600, you wrote:

>Well, repairing the switch was my first thought, but I couldn't find
>a way to open it without potentially destroying it.  I did try Carlsen and
they wanted $109 (if they
>can find it).  I tried GPR and they couldn't get it, and also
>IPC said they couldn't get it.  Blaufergnugen has one, but it is
>a different Bosch number, so I'm a little reluctant to try it.

The 5 buck fix:
What you do is score deeply with a single edge razorblade/Xacto knife. Then
use a small bladed screwdriver to pry apart. Serious glue here! It wont come
apart perfectly, but it don't matter. I even run mine with the cover off.
Inside you find:
a: A leaf switch operated by a cam - this controls when the extra fuel is
added by ECU when you go wide open throttle.
b. A regular mini microswitch - three blade, of which common and NO
(normally open) are used. This is both glued and soldered in place. Often
its only a bad solder joint, but if the switch is going south, unsolder, pry
out and replace.. I used a Cherry (TM) microswitch - avail from any
electronics store. Coupla hour job. Glue it back together when done...


>By the way, have you had any problems with your driveline?  I have
>a metallic clunk in mine sometimes when shifting.  It's winter here in MN,
so I 
>havent' been under the car recently, but last 
>summer I tried holding the driveline on either side of the u-joint
>and bearing.  With slight turning I could duplicate the noise, so
>I suspect that there is play in the u-joint.  I think I've found
>the bearing, but am still looking for the u-joint. 

I need to redo all my bushings, and I'm far overdue for lubing the joint -
supposed to be done every 12K miles, white lithium... Try lubing it first...

>I'd love 1.8 bar of boost, but will have to be happy with 1.4 until
>I get some time to play with springs and see how high I can go before
>the fuel shuts off.  Any ideas?  I think 1.5 or 1.6 is achievable
>before the protection cuts in.

On mine, hit 1.5 and you done hit a wall!!! The engine just stoppeth. (Prior
to bypass/then chip mods, of course).



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                                   EMCM(SW) Dave Head  
87 5KCStq 186K miles and counting... 1.8 bar boost - Whee!
                Maitland, Florida (sounds better than Orlando!)
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