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



Probably the tach itself (I've seen them fail). The circuit is pretty 
simple - it's one (white/slate)wire back to the ECU (distributor 
computer). That same sense lead also feeds the RPM relay and the idle 
speed computer. A failure anywhere but in that wire or the tach itself 
will kill the ignition and the fuel pump too. 

Dave S

--- In dmcnews@xxxxxxxxxxxxxxx, "Jason K. Lindelof" <nofear365@xxxx> 
wrote:
> Hey everyone. A few months back I purchased my first DeLorean.  
> Everything works great except for the Tach.  When I put the key in, 
the 
> tach will fall to 0, I start the car and the tach stays still. If I 
rev 
> the engine, nothing happens.  The needle stays stationary.  When I 
turn 
> the car off, it'll jump to 2000 or so (common from what I've seen).  
> The only time the tach wakes up is when I'm at around 3000 rpm (I'm 
> guessing here) and the tach will run to the redline.  When I shift, 
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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