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Old 04-18-2010, 06:16 am   #1
 
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89 coupe all stock

Can I pull the connector off the esc to check base timing or must it be done at the distributor

Thanks
Ken
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Old 04-18-2010, 10:25 am   #2
 
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Anybody know?
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Old 04-18-2010, 08:59 pm   #3
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No. Pull the proper connector! It disconnects the the electronic advance. It's the tan single wire with a black stripe. Look at the wire loom near the right side of brake booster, between booster and engine. You will see a connector that comes out of the wire loom. A must for proper timing adjustment. I just read an update from GM that said; adjust base timing at 2 degrees BTDC. Warm up the engine before adjusting, I recomend you make sure of the proper base timing for your model before you do the job. Also when the timing light is on and flashing (with advance disconnected),make sure the timing marks don't jump around,thats a sure sign of worn out timing chain and gears. After adjusting timing,disconnect the negative battery terminal for 5 minutes to clear the check engine light. Let us know..
Last edited by lovehatec4; 04-18-2010 at 09:14 pm.. Reason: procedure correction
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Old 04-19-2010, 05:27 am   #4
 
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My connector is buried behind the distriburor. That is why I hoped I could disconect the wires from the esc module. It has the original plug wires and I assume the distributor has never been touched. I have no missfire or spark leak on the wires and hate to dismantle. Was hoping I could check with out too much trouble. I should be at a 6* advance.

Ken
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Old 04-19-2010, 11:13 am   #5
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Quote:
Originally Posted by ken mohr View Post
My connector is buried behind the distriburor. That is why I hoped I could disconect the wires from the esc module. It has the original plug wires and I assume the distributor has never been touched. I have no missfire or spark leak on the wires and hate to dismantle. Was hoping I could check with out too much trouble. I should be at a 6* advance.

Ken
Hi, is the car pinging on hard acceleration? And your right 6 degrees BTDC is correct per factory settings.. The article I read stated for tuning in a little more low end power, set it at 2 degrees BTDC.

Also,you will have to disconnect that single wire (tan/black stripe)..Cusing helps lol. Good luck...
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Old 04-19-2010, 12:40 pm   #6
 
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No pinging just curious as to what it is set at. I always run 93 octane. I did cuss when I saw the connector buried behind the distrubitor. Just thought if the wires from the conector went to the module it wouldn't matter where they were disconected. However if there were different wires then the cusing starts again. thanks

Ken

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Old 04-19-2010, 05:43 pm   #7
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Well if it's runing good,and as the saying goes,,If it aint broke,don't fix it.

Btw,nice C4.
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Old 04-20-2010, 04:11 am   #8
 
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Originally Posted by lovehatec4 View Post
Well if it's runing good,and as the saying goes,,If it aint broke,don't fix it.

Btw,nice C4.
I agree about don't fix it.

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Old 04-21-2010, 05:07 pm   #9
 
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Well it is 1* after tdc. Now this creates another difficult problem. How the devil do you get a wrench on the bolt? Do I need to buy a special wrench? Good thing I love this car.
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Old 04-21-2010, 07:36 pm   #10
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Quote:
Originally Posted by ken mohr View Post
Well it is 1* after tdc. Now this creates another difficult problem. How the devil do you get a wrench on the bolt? Do I need to buy a special wrench? Good thing I love this car.
Go to your local parts house and buy 9/16 distriutor wrench. They ahave a 90 degree bend that makes getting to it easy.
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