Totally different ballgame.
Tan distributor bypass wire
Thread Starter
Instructor
Joined: Dec 2009
Posts: 107
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From: Bowmanville ont
Tan distributor bypass wire
I would like to know when this wire is plugged in what it activates?When my car(88)has this wire unplugged it idles at 500 rpm and runs ok,but when it is plugged in it won't idle,pops in the intake and exaust and generally runs like crap.You name it I have replaced it,IAC,plugs,cap,rotor,module,wires,egr valve,IAT,MAF relays,fuel filter,fuel pump relay,changed distributer,o2,changed ecm,same result.
Last edited by C-4 owner; Mar 23, 2010 at 11:06 AM.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
That tan wire is the EST wire. It it used for timing advance. When you set the timing on your car you unplug this wire so no advance is preset.. When this wire is unpluged it will set a code 42 ..WW
Last edited by WW7; Mar 23, 2010 at 12:29 PM.
Instructor
Joined: Feb 2009
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From: Pinellas Park Florida
Were is the EST wire? I am getting a code 42 and have not been able to find the problem
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 412
From: WV
Tan wire w/ black strip, comes out right next to the brake booster on the engine side, has a black disconnect about 2" long . This is where its at on my 89, your Lt1 may be different..This is what the code 42 can be caused by according to the FSM...42 (Check wiring at ignition module. Replace ignition module. Possible ECM failure).That code may have been there for awhile, you have to disconnect the negative battery terminal to erase old codes... ..WW
Last edited by WW7; Mar 23, 2010 at 01:28 PM.
Race Director
Joined: Sep 2003
Posts: 16,838
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From: Database Error Indiana
Yes, disconnect it. Set timing to 6* advance. Reconnect it. You can unhook the battery to remove the code 42, or after 50 restarts it will go away.
Instructor
Joined: Feb 2009
Posts: 204
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From: Pinellas Park Florida
Tan wire w/ black strip, comes out right next to the brake booster on the engine side, has a black disconnect about 2" long . This is where its at on my 89, your Lt1 may be different..This is what the code 42 can be caused by according to the FSM...42 (Check wiring at ignition module. Replace ignition module. Possible ECM failure). ..WW
Race Director
Joined: Sep 2003
Posts: 16,838
Likes: 341
From: Database Error Indiana
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