No power to coil

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No power to coil

Postby ColinOpseth » Sun Jan 01, 2012 8:45 pm

Hey guys,
I'm on winter vacation right now and have a bit of time to work on my Vega. It quit a few months back and I haven't had time to work on it. Essentially, it quit sending power to the ignition coil. I've checked for spark and have nothing. I changed the coil and still am not getting spark.

Anyone have any idea what it could be? I checked all fuses and they are okay. I have a stock points coil with a stock distributor on there. Coil is new, distributor has about 200 miles on it since remanufactur. Wires are new and the plugs are new, too.

Ignition switch, maybe? I was driving and it just quit. It hasn't sparked since.

Thanks,
Colin
'72 Vega with '93 Camaro LT1/M29 T56/12 bolt 3.31. 16" IROCs all around. Sanderson headers into duals with an H-pipe and Flowmasters. It's loud but at least it's faster than your grandma's Buick. pwned.
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Re: No power to coil

Postby ColinOpseth » Sun Jan 01, 2012 9:22 pm

Okay, so I checked for power on the pink resistance coil wire that comes off the firewall: 10.59 volts steady. Isn't that too high for points? Possibly looking at burned out condenser then or burned points?
'72 Vega with '93 Camaro LT1/M29 T56/12 bolt 3.31. 16" IROCs all around. Sanderson headers into duals with an H-pipe and Flowmasters. It's loud but at least it's faster than your grandma's Buick. pwned.
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Re: No power to coil

Postby spencerforhire » Sun Jan 01, 2012 9:37 pm

If the pink wire has power, it's probably the points. Don't sweat the voltage reading; you will see higher than the 6-8 volts it actually uses while running if there's no signal from the points. Have someone crank it with the key while you check the - terminal on the coil with a test light. Hook the alligator clip to the + battery terminal and probe the - on the coil; if the points are ok the light will pulse.
I strongly suggest instead of messing with fixing the points just put an HEI distributor in it.
The "fleet"-
72 Vega HB Drag Car -383/'Glide/9"(9.35@146.19)(5.94@117.28 1/8th)
77 Vega Estate wagon- project(someday)will have TPI305/T-5, S-10 spindles/axles
76 Vega GT- 400/4spd/9" retired from active duty(rusty)
06 Silverado 2WD ex.cab daily
03 Silverado 2WD ex.cab (retired)
06 Haulin' 20ft enclosed car transporter
06 GMC Canyon Shop truck
07 Colorado project( 5.3 4L60e swap)
99 Saturn SL1- wife's car
01 Saturn SC2- son's project
07 Saturn Ion Redline project
and 4 more Saturn "parts cars"
Note- the very act of listing all of these has made me realize I have some kind of problem.....

Visit http://www.spencerforhire.ca
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Re: No power to coil

Postby ROB » Sun Jan 01, 2012 11:23 pm

I am confused. I thought you had an LT1 motor in there. An LT1 is not points.
1976 Cosworth Vega, #2825
I'm not a purist, this is gonna have a V8.
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Re: No power to coil

Postby NVEGAR8D » Mon Jan 02, 2012 3:05 am

Hi,
depending on the year of the motor , it will still use points and distributor. i have a 96 lt1 , no dist. and uses coil packs.
nick75vega
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Re: No power to coil

Postby ColinOpseth » Mon Jan 02, 2012 6:15 am

Thanks for the help, guys... the more I think about it, it's probably the points. It October it quit on me and the fuel pump fuse had blown. At the time, I thought that was the only problem. It turns out I might have had a case of bad points. I do remember it backfired on me twice within about a quarter mile. Man, those suckers are loud with Flowmasters and no interior. :mrgreen:

Anyway, I bought a new set of one-piece Borg Warner points tonight. Going to put them in and set the dwell. I had them set at 30. Is that too high? My Chevy manual said GM spec was 28-32.

And yes, I do have an LT1 motor in there. It is a stock '93 with a GMPP carb intake and a 1406. I had the fuel injection on but could never get the Moates AutoProm working correctly. After screwing with it for like 2 months I gave up and had the car back running with the carb in 45 minutes. Disappointing, though. I really wanted to run it with the fuel injection.

Anyone have any experience with Pertronix kits?
'72 Vega with '93 Camaro LT1/M29 T56/12 bolt 3.31. 16" IROCs all around. Sanderson headers into duals with an H-pipe and Flowmasters. It's loud but at least it's faster than your grandma's Buick. pwned.
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Re: No power to coil

Postby spencerforhire » Mon Jan 02, 2012 8:01 am

The Pertronix conversion kits for points distributors work great; I've installed a bunch of them for customers with 60's musclecars who wanted to retain the "factory look" under-hood but still have a modern ignition system. You will have to use a non-resistance true ignition+ wire for powering the new module(and coil); on a Vega it's easily found on the oil pressure switch.
Available at any auto parts store for well under $100; some of the more expensive ones (Ignitor III) even have a built-in rev limiter.
The "fleet"-
72 Vega HB Drag Car -383/'Glide/9"(9.35@146.19)(5.94@117.28 1/8th)
77 Vega Estate wagon- project(someday)will have TPI305/T-5, S-10 spindles/axles
76 Vega GT- 400/4spd/9" retired from active duty(rusty)
06 Silverado 2WD ex.cab daily
03 Silverado 2WD ex.cab (retired)
06 Haulin' 20ft enclosed car transporter
06 GMC Canyon Shop truck
07 Colorado project( 5.3 4L60e swap)
99 Saturn SL1- wife's car
01 Saturn SC2- son's project
07 Saturn Ion Redline project
and 4 more Saturn "parts cars"
Note- the very act of listing all of these has made me realize I have some kind of problem.....

Visit http://www.spencerforhire.ca
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Re: No power to coil

Postby 3pedals » Mon Jan 02, 2012 8:18 am

Colin:
I've had a lot of experience with points. I would set the dwell on the long side, right on 32*. As the plastic nub that rubs against the distributor lobes wears, the points will close up. The nub will wear faster than the actual points themselves so rub a tiny little dab of hi pressure lube on the dist. cam lobes. Be sure to put a new condenser in it while you're in there. You should also get yourself a cheap dwell meter and use that rather than a feeler guage.

Are you using a dwell meter?
--- Dan ---
'72 GT Hatch: 406, 4spd/M21, 12 bolt/3.73/posi.
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Re: No power to coil

Postby ColinOpseth » Mon Jan 02, 2012 2:06 pm

Cool, thanks for the heads-up.

Yeah, I'm using a dwell meter. I have to run to the store this morning but will work on the car when I get home. I bought the one-piece updated points that come with an integral condenser on them. The more I think about it, the more I think the points were bad. I guess we'll find out in a few minutes.

I've set points with feeler gauges before and it was a royal pain in the ass. The first thing I bought when I get my Vega running was a dwell meter. The cool thing is it's the only tach on my car when I have it hooked up, too. :lol:
'72 Vega with '93 Camaro LT1/M29 T56/12 bolt 3.31. 16" IROCs all around. Sanderson headers into duals with an H-pipe and Flowmasters. It's loud but at least it's faster than your grandma's Buick. pwned.
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Re: No power to coil

Postby v8astregt » Tue Jan 03, 2012 5:08 pm

HEI. Drop it in, adjust the timing, and as long as you use good brand parts, never touch it again!
75 Pontiac Astre GT: 406SBC/TH350, roll bar, S10 goodies, down to 11.47 so far, more to come later.
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Re: No power to coil

Postby jon72vega » Tue Jan 03, 2012 6:29 pm

v8astregt wrote:HEI. Drop it in, adjust the timing, and as long as you use good brand parts, never touch it again!


That!
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Re: No power to coil

Postby ColinOpseth » Mon Jan 16, 2012 3:38 am

Haha...figured it out. I guess I should have broken out my voltmeter before I ran my mouth. I had good power to the coil. Turns out it was probably a set of burned points...and a possible cracked block. :bang:
'72 Vega with '93 Camaro LT1/M29 T56/12 bolt 3.31. 16" IROCs all around. Sanderson headers into duals with an H-pipe and Flowmasters. It's loud but at least it's faster than your grandma's Buick. pwned.
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