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Re: [T3] the mystery deepens


On 26 Dec 2002, at 19:57, Fiesta Cranberry wrote:

> OK, so I tried to start The B. this morning; no luck.  Took a
> flashlight and looked for the relay box, found it.  It has 5 wires
> coming out of it.  3 red ones, a blue/white and a white.  The white &
> blue go into a plastic plug 

The 2 in the plastic plug control the relay. Put your hand on the 
relay whenever you try to start the car. You should be able to 
FEEL this relay click and then unclick if the engine doesn't start. If 
you don't feel this then the control signal isn't getting this far. It's 
important to know where in the chain is failing.

> I went over to Kragen and bought one of those light pen thingies that
> you use to test circuits with.  Came home and started car, it started
> up just fine.  This time, I heard the whirring sound of the fuel pump
> between the clicks; I definitely did NOT hear that before.  So JIm, I
> think you're right.  Something is going on with the power to the fuel
> pump, but I don't know enough to know what.  I tested all the wires
> with my pen.  The 2 red wires that are next to each other lit up when
> I turned the key (between the clicks).  The other red wire stayed on
> as long as the key was on. 

The real trick is that you have to test things when they aren't 
working, otherwise everything is fine, right? The thing to check for 
is to hear the whirr, hear/feel the clicks, and verify power on the 
single red wire. Depending on what DOESN'T work you trace things 
back toward the source.

-
Jim Adney
Madison, WI USA


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