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11-28-2013, 03:02 AM
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#1 |
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Registered User
Join Date: Dec 2012
Location: hillsdale mi
Posts: 46
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tach prblems
i installed a brand new stewart warner tachin my truck. fired it up it worked great wasreading rpm about 700. went out to start truck next day and it just kept turning over but wouldn't start. unplugged green tach wire from dist and she started right up. hokked ac wire back up and no start just turnin over. im thinking its not grounded god enough????? didn't ave time to check round tonite. any thoughts? am I on the right track thinking bad ground?
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11-28-2013, 08:01 AM
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#2 |
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Registered User
Join Date: Apr 2013
Location: South Westerlo, New York
Posts: 1,325
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Re: tach prblems
(unplugged green tach wire from dist and she started right up) Mine goes to the - on the coil, is that what you meant?
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Thanks, Joe.. 1969 C/10, 348 C.I., 3X2 bbl. V8, 2004r , LWB. |
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11-28-2013, 11:14 AM
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#3 |
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Senior Member
 
Join Date: Mar 2012
Location: Chesapeake, Va
Posts: 1,275
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Re: tach prblems
maybe the tach is bad and is shorting out the coil
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Mike 72 C-10 Cheyenne off frame resto and Upgraded to 4 wheel disk, Tilt, Dakota Digital Dash / Rear slider. 421 SBC / TH350 3000RPM Stall Progression Ignition /Holley 750 DP/3:73 gear Eaton Limited Slip unit / 2 1/2 exhaust glasspacks 
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11-28-2013, 09:09 PM
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#4 |
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The Older Generation
  
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,423
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Re: tach prblems
-
"Unplugging" the tach wire from the "distributor" would indicate to me that he might have an HEI distributor. Are you sure you have the correct wire for the tach feed? Green doesn't sound right to me. I don't have any SW tachs in my vehicles so I'm not 100% sure on that. If the green wire happens to be a ground wire from the tach you could be grounding out the dist. Just a thought... LockDoc
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Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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11-28-2013, 09:13 PM
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#5 |
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Registered User
Join Date: Dec 2012
Location: hillsdale mi
Posts: 46
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Re: tach prblems
Yep hei . Yeah greens the right wire to go to dist. Have a green which goes to tach side of dist. Red that goes switched ignition in my fuse box. Black that's ground and a white that's for illumination that lights tach when I turn on my lights.
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11-28-2013, 09:24 PM
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#6 | |
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The Older Generation
Join Date: Aug 2006
Location: Montezuma, Iowa
Posts: 25,423
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Re: tach prblems
Quote:
Where do you have the black wire connected to ground at? LockDoc
__________________
Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 - |
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11-28-2013, 09:26 PM
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#7 |
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Registered User
Join Date: Dec 2012
Location: hillsdale mi
Posts: 46
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Re: tach prblems
Right by fuse box on the floor. I sanded paint off.
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11-28-2013, 10:54 PM
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#8 | |
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Registered User
Join Date: Dec 2012
Location: Chandler AZ
Posts: 1,149
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Re: tach prblems
Quote:
Red to B+ Black to ground White for instrument lighting Green for tach sense. This if for a newer tach and not the vintage model.
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1970 Longhorn, Front Disc, 350/4 bolt, 882 heads, HEI, Edelbrock, 700R4, HO-52/4.11. 1996 Corvette, Collector Roadster, LT4, 396, 450RWHP, 6sp, 4.11/Dana44/posi 5 point roll bar And let us not grow weary of doing good, for in due season we will reap, if we do not give up. Gal 6:9 |
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