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o2 wire, 87z28

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Old Oct 19, 2005 | 09:44 PM
  #1  
scott 87z28's Avatar
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o2 wire, 87z28

oK I can't find my o2 wire.
basket case when I bought it

I looked at the wire bundles and nothing.
Where is it?
Someone has mad some changes, I can tell by the duck tape on some of the wires.
Is it possible they deleted it?
Why would the do that??
How do I trace the wire from the ECM to the engine bay?



what a pain

thanks
Scott
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Old Oct 20, 2005 | 08:31 AM
  #2  
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o2 wire

What wire is this at the ecm?
Id like to trace it out to the fire wall.
anybody have some kind of idea?
thanks
scott
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Old Oct 20, 2005 | 11:45 AM
  #3  
TPI Monte SS's Avatar
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From: Bergen County, NJ
Car: 1988 Monte SS
Engine: ZZ4-cammed TPI 355
Transmission: World-Class T5
You should be looking for a purple wire with a long plug on the end of it. I'm guessing it'll be near the driver side exhaust manifold if they haven't hacked things up too badly.
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Old Oct 20, 2005 | 12:25 PM
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nope

No purple wire hanging out, anywhere.
took the cover of the wire bundles. still can't find that wire.

is it the only dark purple wire in the bundle???

I was going to find out where it is at the ecm, then trace it through the fire wall.


Is it the only purple wire hooked to the ecm plug???
is it dark purple???
thanks
scott
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Old Oct 20, 2005 | 10:16 PM
  #5  
TPI Monte SS's Avatar
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From: Bergen County, NJ
Car: 1988 Monte SS
Engine: ZZ4-cammed TPI 355
Transmission: World-Class T5
Re: nope

Originally posted by scott 87z28
No purple wire hanging out, anywhere.
took the cover of the wire bundles. still can't find that wire.

is it the only dark purple wire in the bundle???

I was going to find out where it is at the ecm, then trace it through the fire wall.


Is it the only purple wire hooked to the ecm plug???
is it dark purple???
thanks
scott
I have an '87 Electrical Service Manual. It looks like it should go into Pin D7 on your ECM, should be a dark purple wire.
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Old Oct 20, 2005 | 10:45 PM
  #6  
HalfInchWrench's Avatar
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From: Ajax, ON
Car: 85Z28 87GTA 91GTA 98SS
Engine: SBC, LS-x
Transmission: T-5, 700-R4, T-56
The bundle under the porp. valve is where it comes out on my car. The wire is purple on after the plug. Not sure what colour it is in the bundle. Single round connection.
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Old Oct 21, 2005 | 08:09 AM
  #7  
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found

YES, Got it.ehhhaaaa
It was a pain to trace from the ecm.
I was hiding in the wireing bundle.
wow.
what a job, there were a few purple wires in there.
thanks
for the help.

also found my batery draw problem, is was my rear window defrost.
that also was a pain to find.
thanks much scott
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Old Oct 22, 2005 | 09:51 AM
  #8  
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draw

Nope draw is back, its moved, looks to be going through the ecm, now might be ignition problem
crap.
another 4 hour job that didn't pan out.
scott
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