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#1 |
Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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Yet another factory tach question
I found a factory tach in a '78 Blazer this weekend. It read 3500 rpm when I looked at it, without the engine running (junkyard truck). Is it safe to assume it was broken?
Slonaker |
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#2 |
Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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Bump!
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#3 |
Happy to be here
![]() Join Date: Mar 2000
Location: Cypress, TX
Posts: 39,023
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Probably. From what I have been told that is one sign that they are going bad. Is it in good condition besides that?
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Follow me on Facebook and Instagram @N2trux.com Articles- "Jake" the 84 to 74 crewcab "Elwood" the77_Remix 85 GMC Sierra "Scarlett" "Refining Sierra" |
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#4 |
www.73-87chevytrucks.com
![]() Join Date: Dec 1999
Location: Birmingham, AL
Posts: 6,935
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Ditto. That is can be a sign of it being bad. You can always test it. Crossy has a bench test for it I believe.
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Chris Lucas 1973 Chevy C-10 1978 GMC Jimmy (2WD) - SOLD 1987 R10 twin turbo LS 1991 R3500 SRW CrewCab 1985 K5 diesel swapped project 1989 K5 2WD conversion w/ Vette susp Project Captkaos Customs 73-87chevytrucks.com |
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#5 | |
Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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Quote:
I doubt it is still there now. The truck was dated 07/15/05, and was off in a corner. Someone else has probably found it by now. I was hoping for an answer yesterday so I could run out and get it after work. Slonaker |
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#6 |
Registered User
Join Date: Feb 2004
Location: Hodgenville, Ky
Posts: 735
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Without power applied to the circuit ther eis no way to tell. After I turn my truck off mine will drift up too. Would be worth it to buy (if cheap) as long as it moves when power is applied it can usually be easily fixed.
If you look at past posts you will see that I have fixed tachs for a few members. Let me know if you need help with it. |
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#7 |
Insert Witty Text Here
Join Date: Oct 2002
Location: San Antonio, TX
Posts: 3,415
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Thanks. I'm trying to figure out how I can get out there to see if it is still available.
Slonaker |
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#8 |
Slots go on anything!
Join Date: May 2003
Location: Richardson, TX
Posts: 5,957
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If you do decide to pick it up and don't use it, I would be interested in the cluster, working or not.
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1974 Jimmy- 5.3/4L80e/NP241 |
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