[DML] Re: Tachometer Failure
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[DML] Re: Tachometer Failure

Oops  - a bit quick on the draw there. The wire from the tach does 
not go directly/solely to the ECU but joins somewhere in the 
electrical compartment harness where the feeds to the other devices 
are branched. 


--- In dmcnews@xxxxxxxxxxxxxxx, "Dave Swingle" <swingle@xxxx> wrote:
> Probably the tach itself (I've seen them fail). The circuit is 
> simple - it's one (white/slate)wire back to the ECU (distributor 
> computer). That same sense lead also feeds the RPM relay and the 
> speed computer. A failure anywhere but in that wire or the tach 
> will kill the ignition and the fuel pump too. 
> Dave S
> --- In dmcnews@xxxxxxxxxxxxxxx, "Jason K. Lindelof" 
> wrote:
> > Hey everyone. A few months back I purchased my first DeLorean.  
> > Everything works great except for the Tach.  When I put the key 
> the 
> > tach will fall to 0, I start the car and the tach stays still. If 
> rev 
> > the engine, nothing happens.  The needle stays stationary.  When 
> turn 
> > the car off, it'll jump to 2000 or so (common from what I've 
> > The only time the tach wakes up is when I'm at around 3000 rpm 
> > guessing here) and the tach will run to the redline.  When I 
> the 
> > tach goes back to 0 until I get back to around 3000 rpm or so.  
> > 
> > Any thoughts?  Time for a new tach?  
> > 
> > Thanks
> > Ja

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