67 Camaro - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
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post #1 of 7 (permalink) Old Apr 5th, 10, 09:25 PM Thread Starter
aaron
 
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67 Camaro

on my dash under my fuel gauge when i put my headlights on this light turns on my dash under my fuel gauge red it says gen what does that mean thanks.
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post #2 of 7 (permalink) Old Apr 6th, 10, 03:16 AM
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Re: 67 camaro

The GEN is indicating there is not enough current from the alternator for the demand requested and the battery is supplying the current. Happens at idle speed most often; speed engine up, light goes out, hopefully - more current generated.

Problem is either from:
1. Loose alternator belt - loosen alternator and tighten belt.
2. Low output from alternator due to a bad diode within the alternator or a maladjusted voltage regulator - replace mechanical VR with an electronic unit , Wells P/N VR715
3. Poor connections from alternator BAT post/stud to the rest of the electrical system - disconnect ground cable from battery, then disconnect all visual connections you see and wire brush all mating parts, reassemble, and watch the results. The terminals having broken strands should be snipped and replaced.
4. Too low of engine idle RPM - crank it up alittle.
5. Too much current demand from accessories - present design did not include heavy duty stereo amps, electric cooling fans, and other electrical accessories more common today.

Measure charge voltage at battery posts with engine running only, no accessories on, s/b min 13.6 volts after driven on the street for 15-20 minutes. Rev up engine, voltage should go up, max volts s/b 14.5 volts.

With a 37 amp alternator, you were lucky to have headlights at night with wpers on, and defrost on......you carried your nine volt flashlight out the window for additional light.

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post #3 of 7 (permalink) Old Apr 6th, 10, 03:37 AM
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Re: 67 camaro

big E.. who carries wells?? i need one for this 67 im working on?

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if you have a bbc in your 1st gen 67-69 camaro click on the link below and enjoy the veiw and post yours up!!
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if you have an all original 1st gen camaro 67-69 click on the link below and enjoy the veiw and post your up!!
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post #4 of 7 (permalink) Old Apr 6th, 10, 05:37 PM Thread Starter
aaron
 
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Re: 67 camaro

well i know i have a problem electrically because when i turn my headlights on , my ac works my tachometer works my battery gauge works oil pressure gauge works and that gen light turns on but when i turn off my headlights none of these work and that gen light turns off so you think my best bet is to take it to a shop or is it something i can fix on my own. also i have a internal volt regulator, i replaced the alternator from autozone a few months back its new for the most part.
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post #5 of 7 (permalink) Old Apr 7th, 10, 03:22 AM
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Re: 67 camaro

Wells VR can be bought at most any Advantage Auto, Advance Auto, Auto Zone, or NAPA store.

Anything done to the car before this problem arose? Change harness or occur overnight?
If this car is a 1st Gen, was the harness changed?
Was the ext regulator connector jumpered to work with an internal reg alternator? Jumper the two outside wires of the ext VR plug.

If this car is a 3rd Gen or later, same question, what was done to the car before this experience? Retrace the steps on electrical hook-up.

Either Gen of car, no way should the headlamp switch be the source of power for the rest of the accessories. Something is amiss, of course.

As for troubleshooting and repair, its up to you whether you want to tackle the job or not. First, get a Haynes manual for the car. It has an electrical schematic of the car and is better than a blank sheet of paper.

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post #6 of 7 (permalink) Old Apr 9th, 10, 01:24 PM Thread Starter
aaron
 
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Re: 67 Camaro

well i fixed my problems apparently my gauges and tach and ac were wired to the headlight switch instead of the igntion and i had a wire bad on the alternator which in turn wasnt charging battery i took it to a shop and they fixed those problems but i noticed that on my dash the gen llight is still on only when i turn the headlights on. any solutions.
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post #7 of 7 (permalink) Old Apr 9th, 10, 06:51 PM
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Re: 67 Camaro

The wire coming back to the GEN light from the voltage regulator is wired through the h/lamp switch, maybe. Kindda hard to troubleshoot over the wire.

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