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

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Old Apr 14, 2006 | 11:57 AM
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Default est wire

On setting the timing on my 90 vette i was told to disconnect the est wire and i finaly got around set the timing and was having a hard time trying to get to the wire and where i was supposed to disconect it from if any could help me solve my problem id apprecitate it.
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Old Apr 14, 2006 | 12:10 PM
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You will find it between the brake booster and the firewall area. Its brown and has a black cylindrical looking connector.
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Old Apr 14, 2006 | 12:23 PM
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once you set timing at the distributor, don't forget to disconnect the (-) battery cable for about 30 secs.....this will clear the code 42 that sets when the EST wire is disconnected.
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Old Apr 14, 2006 | 03:26 PM
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Originally Posted by cuisinartvette
You will find it between the brake booster and the firewall area. Its brown and has a black cylindrical looking connector.


Im new with corvettes on what side is the brake booster on the only way i can see the wire is right behind the distributer and i cant get back there well enough to unhook it would you happen to have a picture on it.
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Old Apr 14, 2006 | 04:36 PM
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Originally Posted by olds442/vette
Im new with corvettes on what side is the brake booster on the only way i can see the wire is right behind the distributer and i cant get back there well enough to unhook it would you happen to have a picture on it.

The brake booster is on the drivers side. like, inline with the steering wheel. Look between the booster and the dist, you should see a bunch of wires. one of them is tan and has a black plastic connecter. you may have to dig a little bit, but not a big deal.

The connector is not on, or under the dist. it is half way between the dist and the booster. actually I think it is closer to the booster.
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Old Apr 14, 2006 | 05:02 PM
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Originally Posted by bill mcdonald
The brake booster is on the drivers side. like, inline with the steering wheel. Look between the booster and the dist, you should see a bunch of wires. one of them is tan and has a black plastic connecter. you may have to dig a little bit, but not a big deal.

The connector is not on, or under the dist. it is half way between the dist and the booster. actually I think it is closer to the booster.

Your informaiton was very helpful i found and i am working on it right now thank you and happy motoring
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Old Apr 14, 2006 | 05:13 PM
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Old Apr 15, 2006 | 10:00 AM
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There it is!!!
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