[DML] Re: Wacky Tach
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[DML] Re: Wacky Tach



Vic and Jason - One of our local club members had a variety 
of "interesting behaviors" with dash instruments, including his 
tachometer.  He found a loose or poor ground connection at a ground 
collector terminal that is located behind the vertical carpeted panel 
that is above and aft of the parcel shelf.  If you remove that carpeted 
panel, the ground collector stud (1/4 inch diameter) is facing 
fore/aft, is just above the relay compartment, and has several black 
wires attached to it.  I believe that most of the dash is ultimately 
grounded through this stud.  I would recommend cleaning each wire 
terminal individually, and then tighten everything back up with some 
dielectric grease applied.  Let the List know if this helps.

Toby Peterson  VIN 2248 "Winged1"
DeLorean Parts Northwest, LLC
www.delorean-parts.com

--- In dmcnews@xxxxxxxxxxxxxxx, "ironranger7012" <kvlauhala@xxxx> wrote:
> I posted this message a couple of weeks ago with no response.  After 
> just reading Jasons message about his tach going past redline may be 
> our problems are similar.
> In my case the tach reads ok at idle to about 2.5k and then starts 
> going wild.  At about 65mph the reading is about 5k and wavering +/- 
> 200 rpm.  The original tach did the same until it went around and the 
> needle just pointed down and waved a little while the engine was 
> running. I bought a new tach but it does the same as the first but at 
> about 1k less rpm.  I have just put up with it but I don't want this 
> to go over the top and have to buy a new tach again.  I was thinking 
> it may be the ground for the tach but I'm feeling too old to maneuver 
> under the dash anymore for something that may or may not be my 
problem.
> I hope someone else out there has a cure for this and/or Jasons.
> 
> Vic
> 7012






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