C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Any Help On Timing my 85....

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Old Dec 8, 2005 | 12:39 AM
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Default Any Help On Timing my 85....

The shop manual is not very clear on the procedure.
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Old Dec 8, 2005 | 08:50 AM
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Get the car warmed up. Shut it off. Unplug the ESC. The plug can be found between the brake booster and the engine. Look for a single wire (brown/black tracker) plug in amoungst the wires there. Use a timing light and turn the distributor to the desired initial advance. I believe the factory setting is 6 deg BTDC. When done, shut down. Reconnect the ESC. You may see a SES on the dash, but mine will usually go away after i shut it down. If necessary, you might have to reset it. Good luck
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Old Dec 8, 2005 | 09:23 AM
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ralph hit the high points. You will have to clear codes.
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Old Dec 8, 2005 | 10:32 PM
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I can't see where to loosen the distributor
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Old Dec 8, 2005 | 10:45 PM
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It's down at the base of the distributor, behind the vacuum solenoid that is for the EGR. One bolt, don't take it out, just loosen it a bit then snug it back up just so you can move the dist.
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Old Dec 8, 2005 | 10:49 PM
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cant find that brown wire either....so much for lasik
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Old Dec 8, 2005 | 11:54 PM
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Originally Posted by Southern Comfort
cant find that brown wire either....so much for lasik
You may not see any of the wire. Look where ralph said at all the wiring harness'. You should see a connector, single pin, that seems to be out of the main sleeve for no reason. If you peel back the sleeve you will then see the wire color and know you have the right one.

PS if your 85 is as old as mine, and I'm willing to bet it is, the wire may appear to be pink or off-white
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Old Dec 9, 2005 | 12:56 AM
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Thanks all....got it done!!!!!!!!!!!
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Old Dec 9, 2005 | 08:43 AM
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Was it easy getting to the 9/16 bolt that holds the distributor in place? On my 84 is was a little tough getting the wrench onto the bolt.
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Old Dec 9, 2005 | 10:46 AM
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Even the offset box wrench can't get it easily. I'm gonna get a torch and bend it.
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Old Dec 9, 2005 | 11:40 AM
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Originally Posted by Brimis
Was it easy getting to the 9/16 bolt that holds the distributor in place? On my 84 is was a little tough getting the wrench onto the bolt.
A typical chevy distributor wrench work great, very easy. Available at your local parts outlet.
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Old Dec 11, 2005 | 06:15 AM
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auto zone, save your knuckles and from getting burned.
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