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Old 04-29-2010, 12:22 am   #1
 
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When my headlights are on, my driver's side motor makes a very loud ticking.

Any ideas? minor annoyance or important repair issue?
1985 Z51 4+3 trans rebuilt 5.7 TPI,(.10 over) w/ CompCams 12-262-4, 52MM Throttlebody, underdrive pulleys, reworked heads, Hypertech Thermomaster chip, & cat back exhaust
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Old 04-29-2010, 06:18 am   #2
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HI there,

Sounds like the internal circuit breaker isnt working, and coming down.

Check for voltage through the motor and if it spikes when the TICK occurs.

Otherwise, it may be a gear thats starting to strip.

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Old 04-29-2010, 05:37 pm   #3
 
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Thanks. Will do and report back. My money is on the gear. Kinda has that mechanical sound and I can feel the "thump" when the motor makes the notice. Lamp is often a little slower than the other to rise.
1985 Z51 4+3 trans rebuilt 5.7 TPI,(.10 over) w/ CompCams 12-262-4, 52MM Throttlebody, underdrive pulleys, reworked heads, Hypertech Thermomaster chip, & cat back exhaust
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Old 05-02-2010, 09:21 pm   #4
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I am betting it's the delrin bushings that have been chewed up. Take a look at this link:

http://www.corvettemagazine.com/comp...1988-1996.html
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Old 05-03-2010, 12:51 am   #5
 
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Mine's an '85....
1985 Z51 4+3 trans rebuilt 5.7 TPI,(.10 over) w/ CompCams 12-262-4, 52MM Throttlebody, underdrive pulleys, reworked heads, Hypertech Thermomaster chip, & cat back exhaust
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Old 05-03-2010, 10:00 pm   #6
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I agree, I replaced the bushing last year on my left light. It's about a two hours install from start to finish. nice weekend project. I have attached a PDF for the install.
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Old 05-04-2010, 02:16 am   #7
 
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Quote:
Originally Posted by Ed89 View Post
I agree, I replaced the bushing last year on my left light. It's about a two hours install from start to finish. nice weekend project. I have attached a PDF for the install.
To my knowledge, the bushing was not used in 1985. I'm thinking 1988 and on. Those motors are far better. That may be why.
1985 Z51 4+3 trans rebuilt 5.7 TPI,(.10 over) w/ CompCams 12-262-4, 52MM Throttlebody, underdrive pulleys, reworked heads, Hypertech Thermomaster chip, & cat back exhaust
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