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Raiden Member
Joined: 10 Mar 2004 Posts: 193 Location: tacoma
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Posted: Fri Feb 04, 2005 2:36 pm Post subject: code 43 esc.?. |
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I have been gettin a code 43 which is either a knock sensor or an esc module. Where is the esc on a speed density tpi car? I just replaced my knock sensor a few months ago.
ty! |
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Twilightoptics Hardcore (12sec Club)
Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Fri Feb 04, 2005 2:41 pm Post subject: |
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Check up by your heater box for a single tan wire with black stripe. It has a conenctor in the middle... make sure thats plugged in. The ESC or Electronic Spark Control I believe is a thing box piece about 3x3x1" next to all your relays on the right of the master cylinder.
Maybe that's called the knock module, something like that. |
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Raiden Member
Joined: 10 Mar 2004 Posts: 193 Location: tacoma
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Posted: Sun Feb 06, 2005 9:33 am Post subject: |
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Thnaks bro for the reply! However, the tan wire wil cause a code 42, not a 43.
This is what I did find on the topic and thought it woudl be good to pass along incase anyone else runs into such problems;
AEngine above 67*C does a scan indicate a value of knock retard between 4* and 20*?
= iF YES, disconnect the knock sensor with ignition ON use a DVM between harness circuit #496(GF9 at the ECM and the end of the knock sensor wire)
voltage on the wire should read between 4 & 6volts.
Does it?
If yes, check the resistance of the knock sensor to engine block. It should be between 3300 and 4500ohms.
If less than 4 volts, circuit #496 is open, or faulty ECM.
If over 6volts, see if the knock wire is too close to a spark plug wire inducing voltage. or faulty ECM.
If YES resistance is good, see if the chip is firmly seated in ECM, see if harness connector is in good condition. Replace chip.
If NO resistance is bad, faulty knock sensor |
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Dewey316 The Lama
Joined: 08 Jan 2004 Posts: 7295 Location: Bringing the tech
1990 Chevrolet Camaro RS
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Posted: Sun Feb 06, 2005 9:48 am Post subject: |
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Good information Craig.
Did that come from a service manual? I'm imaging that was originialy a flow chart. |
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Twilightoptics Hardcore (12sec Club)
Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Feb 06, 2005 12:59 pm Post subject: |
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I was close, I thought it was an ESC code though. Was too lazy to break out the shop manual. |
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