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#1
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Lemans just dies randomly
It's pretty scary so I quit driving it. I did some troubleshooting and while at it replaced the blinker harness since the hazard button wouldn't stay engaged (scarier). When I finished I tested blinkers, etc. but didn't try to start it until the next weekend. Dead no lights no click or cranking. Thought maybe I screwed up something with the ignition switch but found the fairly new Battery was dead.
Long story short, the POS O'reily alternator (2-300 mi) was drawing with the key off (36 mA, 6K ohms resistance). The car always cranked good and didn't seem to be loosing power so I assume it charged when driving, but could the alternator have been causing it to die. When it did cut off, 90% of the time it would fire right back up. Couple time took 2-3 tries. Anyone have a similar problem ? Thanks Neil
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1971 Lemans, Wht/Blk, 400/TH400 2-brl, frt. disk kit, HD -2" spindles, PST, UMI trailing arms/sway bar, Edlebrock, Holley 650, Eaton 3.08, still in progress 1976 Olds 442, 350/TH350, Eldelbrock RPM and 600cfm, headers, flowmaster 50's, PST HD suspension, Catapaults |
#2
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If - even some of the time - it starts right up again after it dies, I'd suspect an ignition problem. HEI distributor?
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1965 Pontiac LeMans. M21, 3.73 in a 12 bolt, Kauffman 461. |
#3
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Distributor was replaced (due) still dies.
New ignition Switch and Neutral S.Sw when replaced column. (to floor shift) I guess they could be defective. I just wondered if someone had a bad alternator that resulted in similar symptoms. Thanks.
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1971 Lemans, Wht/Blk, 400/TH400 2-brl, frt. disk kit, HD -2" spindles, PST, UMI trailing arms/sway bar, Edlebrock, Holley 650, Eaton 3.08, still in progress 1976 Olds 442, 350/TH350, Eldelbrock RPM and 600cfm, headers, flowmaster 50's, PST HD suspension, Catapaults |
#4
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What kind of distributor? What kind of fuel pump? If the alternator was bad it would be running off the battery and therefore would not restart.
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#5
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I'll assume you meant a DUI distributor. (HEI).
What does your wiring look like? How about your grounds? When it has refused to start for you, have you checked for spark and checked for fuel?
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1965 Pontiac LeMans. M21, 3.73 in a 12 bolt, Kauffman 461. |
#6
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This is going to be difficult to find the cause. It may not even be ign! To rule ign in or out, run a jumper direct from bat +ve terminal to the coil/dist. If it proves reliable, then the problem is in the wiring. Report back.
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#7
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If you have HEI, it grounds through the dist clamp to the block. If you have missing grounds elsewhere, it will make no difference, the HEI will still work.
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#8
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Quote:
Probably need lot more info, especially when doing over internet. (what conditions are happening when it does it) What I would check 1st is the wiring loom from the alternator to the firewall. Possibly there is a loose crimp/solder connection where it joins other wires. Or a corroded wire inside the insulation. Then try with the alternator disconnected and see if it happens?
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
#9
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Thanks for all the input guys. Much appreciated.
HEI distributor and new M&H engine harness. I was lucky and watching the fuel gauge when it died 1 time - 7.5 psi constant. Has a regulator and low miles filter. The interior had rust from floorboard damage but they were replaced. The dash harness does not look good nor the fuse panel - dirty, somewhat corroded so needs to be replaced. I got a 63A Remy alternator coming so that's the next step. I'll let you guys know what happens. I'll try the hot wire on the HEI as well. Just need to be sure to be able to shut it off when the throttle sticks wide open. Thanks a lot. Neil
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1971 Lemans, Wht/Blk, 400/TH400 2-brl, frt. disk kit, HD -2" spindles, PST, UMI trailing arms/sway bar, Edlebrock, Holley 650, Eaton 3.08, still in progress 1976 Olds 442, 350/TH350, Eldelbrock RPM and 600cfm, headers, flowmaster 50's, PST HD suspension, Catapaults |
#10
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I figured it had an HEI
Bad module in the distributor or the coil on top. Both get affected by heat and fail. That, along with several other reasons, are why HEI is a bad idea today. MSD is a much better solution. |
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