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Old Aug 14, 2003 | 01:32 PM
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
more wiring questions

I have more random wires that i don't know where they go. Please help.

The blue circle contains an orange wire and a yellow wire.

The yellow circle contains a gray wire and a black with purple stripe wire

The red circle contains a black wire and a purple with black stripe wire.

Where do these wires conncect to? Also what wire connects to the nipple shaped sensor on driver side of the block just below the head? Also i have a wire that is on the same harness as the two A/C wires, i have it labeled as going on the front of the engine, where does this wire go? the power steering pump maybe?

thanks again
JP

Last edited by 87350IROC; Dec 30, 2006 at 02:30 PM.
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Old Aug 14, 2003 | 03:37 PM
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ok, i found where the connector in the yellow circle goes, it attaches to a vacum box
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Old Aug 14, 2003 | 04:17 PM
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Engine: L98
Transmission: T56
I now found the correct location of the wire in the blue circle, it connects to the back of engine near the tranny on the driver side. I'm getting close now, i can't wait to hear this thing fire up.
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Old Aug 14, 2003 | 06:01 PM
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red circle, anyone? how about the others?
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Old Aug 14, 2003 | 08:45 PM
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ok, it turns out my loose wire connects to that nipple shaped sensor (coolant temp sending unit). So now I only have to locate the connector for the yellow circled wire. Can anyone help? I feel like i'm talking to myself
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Old Aug 14, 2003 | 09:21 PM
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if i had the time, id go out in the book trailer and get a 85+ shop manual and look for you, but i dont have the time, and its late

if you cant find it tomorrow, pm me and ill see if i can find a shop manual with the wiring diagrams and tell ya...
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Old Aug 14, 2003 | 09:55 PM
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ok, i'll do that, thanks, i can't find the connector for anything, i'm starting to get frustrated
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Old Aug 15, 2003 | 02:12 AM
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Red circled connector goes to the MAT sensor on the under side of the plenum.

Yellow goes to the EGR solinoid. Back corner, passenger side of intake.

The blue one looks like an injector connector no? That goes to the cold start valve (9th injector).

Last edited by Morley; Aug 15, 2003 at 02:16 AM.
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Old Aug 15, 2003 | 08:35 AM
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Transmission: T56
the one in the red circle doesn't fit the bottom of the plenum besides i already found the wire for the MAT sensor
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Old Aug 15, 2003 | 09:20 AM
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From: Welland, Ontario, Canada
Car: 85 Monte Carlo SS...
Engine: T.P.I L98.
Transmission: TH350
Axle/Gears: 3:73 Posi
What colours are the wires going to the red highlited one??? The yellow one is infact for the EGR solinoid. What are the colours on the blue one??

Last edited by Cruzin Kaz; Aug 15, 2003 at 09:23 AM.
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Old Aug 15, 2003 | 09:24 AM
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
The red circle contains a black wire and a purple with black stripe wire. Yea, i got the other wires, I just need the red highlighted ones.
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Old Aug 15, 2003 | 09:52 AM
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From: Welland, Ontario, Canada
Car: 85 Monte Carlo SS...
Engine: T.P.I L98.
Transmission: TH350
Axle/Gears: 3:73 Posi
Hmmm That one has me kinda of stumped. The plug itself is just like the one for the EGR solinoid right?? It is two cylinders shaped things? How long is the wire itself??? Like if you pull it up can it go to the front of the engine compartment?? Or is it stuck right there kinda?
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Old Aug 15, 2003 | 10:45 AM
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From: Everett, WA
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Engine: L98
Transmission: T56
Right, two cylinders just like the egr solinoid. Its not gonna get much further forward than that, it could prolly drop striaght down near the bottom of the engine though. I thought maybe it hooked into the fuel pressure regulator, but there aren't any plugs in it. There is always one thing that prevents me from completing a project, and this is it.
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Old Aug 15, 2003 | 10:49 AM
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Engine: L98
Transmission: T56
more pics, it is just on the driver side of the distributor

Last edited by 87350IROC; Dec 30, 2006 at 02:30 PM.
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Old Aug 15, 2003 | 12:30 PM
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From: Welland, Ontario, Canada
Car: 85 Monte Carlo SS...
Engine: T.P.I L98.
Transmission: TH350
Axle/Gears: 3:73 Posi
Sorry I took so long to get back to you, but we keep losing power back and forth. It's hell on earth here right now.. And VERY HOT!!!! Are both plugs in the distirbutor now??? If not that has to be what it is then. Mind you all my scamatics dont' show that colour combo.
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Old Aug 15, 2003 | 12:32 PM
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
Yes both distributor plugs are in, right, i couldn't find that combo anywhere else either. I guess if i don't find this location soon i will just start it up and see what happens.
Correction: under closer inspection, the wire is prolly pink with balck stripe not purple with black stripe
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Old Aug 15, 2003 | 12:49 PM
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From: Welland, Ontario, Canada
Car: 85 Monte Carlo SS...
Engine: T.P.I L98.
Transmission: TH350
Axle/Gears: 3:73 Posi
Hmm I checked all year of TPI using MAF and can't seem to find that combo... do you have Cruise? I am wondering if that is what it may be??? Anyone else have an idea???

Well Yeah put it together and see if you seem to have all sensor plugged in. See if she starts up I guess. but I would try to researcn it a bit more, just to be safe. I can't really compare my TPI system as it is 89 and the wiring is completely different colour wise.

BTW sharp car!!! I just checked out your cardomain quickly.
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Old Aug 15, 2003 | 01:01 PM
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
Thanks, I love that thing, i just wish it wouldn't break so often. Yea, I have cruise. After i read that i went back and checked but i still couldn't find anything.
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Old Aug 15, 2003 | 01:10 PM
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From: Welland, Ontario, Canada
Car: 85 Monte Carlo SS...
Engine: T.P.I L98.
Transmission: TH350
Axle/Gears: 3:73 Posi
Hmm... well I will be at a friends house over the weekend who has a 87 Iroc w/TPI I'll take a look and see if I can find that plug. Hopefully someone else will chime in before then, but if not maybe I can find it on his car??
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Old Aug 15, 2003 | 01:54 PM
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
Hey i appreciate all the time your taking to help me. Hopefully you will find it on your buds car.
JP
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Old Aug 15, 2003 | 02:03 PM
  #21  
Cruzin Kaz's Avatar
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From: Welland, Ontario, Canada
Car: 85 Monte Carlo SS...
Engine: T.P.I L98.
Transmission: TH350
Axle/Gears: 3:73 Posi
Hey I am here to help, and I enjoy doing it. yeah hopefully I can find it on my buds car, but hopefully someone else may know what it is before then so you dont' have to wait
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Old Aug 15, 2003 | 03:33 PM
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
come on, i really need you guys to help, please please, pretty please :hail:
JP
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Old Aug 15, 2003 | 04:21 PM
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ok... i went out and found a 85 shop manual... looked up the lb9 tpi engine, and i see a 2 prong connector going to the EGR solenoid with the same color wires as in the yellow circle...
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Old Aug 15, 2003 | 04:31 PM
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ok i see a black and black/pink combo that could go to the throttle kicker relay (whatever that is) you might check over by your relays on the drivers side firewall for one without a plug or another plug that would go into that one... (mahybe it is hiding down behind the brake booster?)
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Old Aug 15, 2003 | 05:14 PM
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-=sits back puts his legs up on the table and says "removeing that damn ECM was the best thing i ever did to my car" =-

:lala: :lala: :lala:
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Old Aug 15, 2003 | 05:37 PM
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me too... at least after swapping in a 400 small block
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Old Aug 15, 2003 | 08:02 PM
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From: Everett, WA
Car: 87' IROC
Engine: L98
Transmission: T56
Originally posted by My86Firebird
-=sits back puts his legs up on the table and says "removeing that damn ECM was the best thing i ever did to my car" =-

:lala: :lala: :lala:
grrrr.... stupid me wants to keep the car stock, thats why i put a zz4 cam and set of KB flat tops in it
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