dear fellow artful dodgers,
Some jerk cut the pigtail off the oxygen sensor on my exhaust on my mostly
86 225 ram
it should go to the electronic spark control unit (ECU)
my shitty haynes manual shows only wiring for EFI models
my 91 ramcharger service manual is too old
of course i can't find a decent service manual when i need one
my other 86 ram is not the same, and neither are the other 2
looked at wiring for other models (since the truck is a farm truck, saw no
salt but a creative mish-mash of 80's rams)
still can't find the wiring BUT Napa also says they have a part for this
model and the butt end looks like the plug which is what is left of the O2
anyone have a proper chrysler service manual and could look this up for me
I have several manuals including the '86. As near as I can tell, you're
looking for the N11 circuit, an 18 ga. black wire. From the O2 sensor it
goes through an 8 way (4x2) connector on it's way to the spark control
computer. I'm sorry I can't help more than this.
dear big iron,
you're an angel -- this is a huge help -- colour stays black -- 18 ga --
find connector -- look for thick black beheaded or dangling wire at ecu
i had found references to the o2 sensor in the haynes manual but only for
fuel injection systems
your description of N11 is almost identical to the one they describe for
tbi, n11 pink at sensor goes through 4x2 connector, changes colour to
black/dark green and goes to 41, so i am looking for different colours, but
can also use this diagram positionaly to help me muddle along with fair
i'll let you know how things turn out :-)
...now if i could just get my hands on your wiring diagrams (grin)
Dear big iron,
cold you give me any pointers to where the 4x2 connector is located?
btw, I got some help -- it is not a ecu, but an ecm (emmission control
any help is truly appreciated - i can't even get home right now
The manual is of very little help here, they simply don't anticipate people
cutting up the wiring harness. The manual_claims_ the connector is at
center of dash, indicating inside the cab. I find that hard to believe,
could be I guess.
The manual indicates the spark control computer is air cleaner mounted? I
know the V8 trucks were behind the battery in '86. Maybe you can find the
connector by working from the computer? If you can, here are the circuits
going to the 8 way connector from the scc.
1. N3 18 ga. violet
2. N10 18 ga. black/red tracer
3. N9 18 ga. dark green
4. N15 18 ga. tan
5. N11 18 ga. black
6. N4 18 ga. light green/yellow tracer
7. N5 18 ga. black/light blue tracer
8. T9 20 ga. black
9. N6 18 ga. orange
I'm not familiar with an emission control module, at least not on an '86
model truck, could be different terminology?
Sorry I can't be more help, Texas is too far from Canada...
i am having keyboard problems too
been trying to thank you all morning
we have a blizzard here -- so i am going to do this monday, but you have
given me everything i need, much appreciated.
the ecm IS behind the battery
i tried finding the connector as you mentioned and i agree -- the dash would
be a silly place for it -- and who heard of an ecm on an air cleaner (grin)
i will give yu an updat e befre dark monday ... here gos kyboad again
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