87 Base timing
Drifting
Joined: Mar 2005
Posts: 1,923
Likes: 0
From: GA
Start the engine and bring it up to operating temp. Shut it off and disconnectthe EST wire (brown with black stripe) in the engine bay. It is a single wire back near the firewall that coes out of the loom, has a single wire connector on it and disappears back into the loom. With the wire disconnected, start the car with a timing light hooked up and check the timing, should be 6* BTDC. Set it if needed. Shut off the engine and reconnect the EST wire. Pull the fuelpump/ECM fuse by the battery for 30 seconds (clearing the code set from disconnecting the ESC wire). Put the fues back in and you are done.
Race Director
Joined: Sep 2003
Posts: 16,836
Likes: 337
From: Database Error Indiana
Its very near where the throttle cable goes through the firewall. I just sent a pic of the area to someone else on the forum. Send me your email address and I can forward it to you. 
Wrightxx@sbcglobal.net
Wrightxx@sbcglobal.net
Last edited by JackDidley; Jan 2, 2006 at 11:01 PM.
Thread Starter
Racer
Joined: Dec 2005
Posts: 295
Likes: 0
From: Kempner Texas
Originally Posted by Spankyellow
Its very near where the speedo cable goes through the firewall. I just sent a pic of the area to someone else on the forum. Send me your email address and I can forward it to you.
Wrightxx@sbcglobal.net
Wrightxx@sbcglobal.net
Thread Starter
Racer
Joined: Dec 2005
Posts: 295
Likes: 0
From: Kempner Texas
I set the base timing today to 6* btdc, TPS to 5.9, then after disconnecting the battery to clear the code the engine idles pretty good on it's own. However the idle is a little irratic and fluctuates mostly between 700 and 800 rpm, occsionally it will dip to like 500 rpm and then surge to about 1000 rpm a couple times, then level out again and do the 7 to 800 thing. Any ideas or suggestions?
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Thread Starter
Racer
Joined: Dec 2005
Posts: 295
Likes: 0
From: Kempner Texas
maybe I should mention the fuel pressure is about 40 psi, and I was wondering if it could be the gas in the tank? I cleaned the tank out completely when I put in the High Volumn fuel pump and only added 5 gallons at that time. This was back in early spring and I haven't added any since. Did the gas go bad from sitting in the HOT Texas Garage over the summer?
Thread Starter
Racer
Joined: Dec 2005
Posts: 295
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From: Kempner Texas
I say I didn't mess with it but that is a new TB so I did have to take it out of the old one and put it in the new TB, better yet I have a brand new IAC on the workbench so I guess this weekend I'll just replace and adjust it