re:starting with tach - Team Camaro Tech
Electrical & Wiring Troubleshooting electrical.

 
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post #1 of 8 (permalink) Old Jan 20th, 05, 02:22 PM Thread Starter
 
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anyone know why my car starts great when i dont have the tach hooked up and when i do it struggles to start if it starts at all? i just installed a new printed circuit board to get the tach working.

67 RS/SS 396 with accel Hei and Factory Tach
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post #2 of 8 (permalink) Old Jan 20th, 05, 03:49 PM
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Was the printed circuit board burned? If so, the tach is probably shorted internally which damaged the circuit board in the first place.

Dave
========================
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #3 of 8 (permalink) Old Jan 21st, 05, 06:14 PM Thread Starter
 
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the circuit board was burned the tach is new(doesnt mean squat tho)
thanks dnult
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post #4 of 8 (permalink) Old Jan 22nd, 05, 05:38 AM
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That's good that the tach is new. I'd hate to see you fry the new circuit board. Is the brown wire hooked up to the negative side of the coil (same side as the breaker points)?

Dave
========================
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #5 of 8 (permalink) Old Jan 23rd, 05, 04:24 AM Thread Starter
 
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its an hei so it is hooked up to the (tach) out
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post #6 of 8 (permalink) Old Jan 23rd, 05, 05:32 AM
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If you have an ohm meter, measure the resistance from the tach line from under the hood, back to the tach. You should see high resistance if any at all. If you use an analog volt meter, you might see a reading on the 10K or 100K ohm scale. I suspect you'll find you have much less resistance.

Is this a factory HEI? Around 72 is when GM started phasing in HEI.

Dave
========================
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #7 of 8 (permalink) Old Jan 23rd, 05, 05:31 PM Thread Starter
 
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its a new accel
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post #8 of 8 (permalink) Old Jan 24th, 05, 04:46 PM
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Sorry dude. Your spoon feeding me info and I'm loosing patience. Good luck with it. Maybe one of the other guys can help.

Dave
========================
68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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