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Left the ignition on and check engine light doesn't come on before start

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Old Aug 7, 2010 | 10:55 PM
  #1  
Stevolwevol's Avatar
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From: Michigan
Car: 86 IROC Z, 92 RS
Engine: 305 4bbl, 305 TBI
Left the ignition on and check engine light doesn't come on before start

I left the ignition on over night by mmm mistake, and now the check engine light doesn't come on. I think I burned out the bulbs, but I wanna know if anything else besides me could be the blame. The fuse is ok also..
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Old Aug 9, 2010 | 12:00 PM
  #2  
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From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Dash Needs A Check Light For Check Engine Light - Light

With the ignition OFF disconnect the ECM.

Using a fused jumper (1 amp is good) ground pin A5 of the connector (not the ECM).

Now, turn the key to the RUN position.

Does the
Service Engine Soon light come on now?


Happy Racing!



Rule Number 1 Is To Know Which Rules You Can Break

.

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Old Aug 9, 2010 | 12:06 PM
  #3  
Stevolwevol's Avatar
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From: Michigan
Car: 86 IROC Z, 92 RS
Engine: 305 4bbl, 305 TBI
Re: Dash Needs A Check Light For Check Engine Light - Light

Well, I am not sure or more like I don't have a clue where the ECM is, or pin A5 is. If there is a way to tell me, please let me know.
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Old Aug 9, 2010 | 01:02 PM
  #4  
NINÅ's Avatar
Supreme Member
 
Joined: Jan 2006
Posts: 3,341
Likes: 10
From: Mooresville NC
Car: LOWERED ♦ CRIMSON METALFLAKE
Engine: ► 400 KUBES ◄
Transmission: 765R4
Axle/Gears: EATON POSI 4.56
Dash Needs A Check Light For Check Engine Light - Light

The ECM located above the “passenger” footwell.


Happy Racing!



Rule Number 1 Is To Know Which Rules You Can Break

.

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Old Aug 12, 2010 | 09:23 PM
  #5  
Stevolwevol's Avatar
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Joined: Nov 2008
Posts: 1,697
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From: Michigan
Car: 86 IROC Z, 92 RS
Engine: 305 4bbl, 305 TBI
Re: Dash Needs A Check Light For Check Engine Light - Light

The check engine light mysteriously started working again... hmmm
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