 Need Tach Diagnostic Help..., Tach freezes after car warms up.... |
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| nine14cats |
 Feb 20 2005, 07:19 PM
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Bill Pickering -- 914-6 GT aka....Leeloo  Group: Members Posts: 2,618 Joined: 10-February 03 From: Campbell, CA Member No.: 287 Region Association: None  |
Need some diagnostic help here with my tachometer.
I have a 1976 2.0. All stock except a pertronix upgrade. Immediately after a cold start the tach registers fine. A few minutes later (and especially after driving on the street for 10 or more minutes), the tach will freeze, usually around 2K RPM. Any ideas as to why? And how to fix? Thanks in advance for the help! Bill P. P.S. The car has been sitting for the better part of a year. |
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| 914GT |
Feb 20 2005, 08:10 PM
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#2
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Senior Member Group: Members Posts: 1,100 Joined: 11-October 04 From: Tucson Member No.: 2,923 Region Association: Southwest Region |
That's odd. If it was the coil warming up and slightly changing the characteristics of the ignition pulses I'd expect the needle to bounce around or go to zero. Since it's stopping at 2000 that would seem to be more of a problem with the tach itself. Like it's warming up and expanding and binding the needle on the bezel at that particular spot. So after you shut the car off for awhile does the needle drop back to zero?
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Posts in this topic
nine14cats Need Tach Diagnostic Help... Feb 20 2005, 07:19 PM
nine14cats Hello Guy,
Yep...when I park the car the tach is ... Feb 20 2005, 08:13 PM JOHNMAN I had one do that once.
In my case it was a probl... Feb 20 2005, 08:15 PM nine14cats bump...
I'll check the glass tomorrow during ... Feb 21 2005, 03:56 AM bperry I had the same problem with my lense. The original... Feb 21 2005, 03:55 PM JOHNMAN Bill, where did you get a pic of my car for your a... Feb 21 2005, 04:07 PM Hydra i'm having the same problem with my tach but i... Feb 22 2005, 02:23 AM Dave_Darling Check this Tech Article from the Bird site:
http:/... Feb 22 2005, 03:44 PM
nine14cats Thanks Dave!
Bill P. Feb 22 2005, 04:04 PM |
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