( I apologize in advance if this is a double post, I just realized that this might be better in the TPI section)

I have an 87 IROC L98 5.7L 350, TPI .... ok so.

I did some cable management on my ride recently right after installing an MSD 6 AL and came up with a few stragglers.

It should be known that my Smog pump and lines were previously removed, carbon filter, AC and compressor were removed.. whole point behind it is I thought they might be connectors from this (I didn't remove these items myself)

These images haven't been resized so I'll put links up instead of posting them.

http://www.omnipotent-goku.com/080203/000_0089.JPG

http://www.omnipotent-goku.com/080203/000_0090.JPG

http://www.omnipotent-goku.com/080203/000_0091.JPG

http://www.omnipotent-goku.com/080203/000_0093.JPG

Anyone have any ideas what any of these connectors are ?

 

im pretty sure the connector in the second pic goes on the coil.

 

That particular connector seems to connect to the fuel injectors somehow.... Does anyone know where that "TPI ***" site is? I've seen it once before but cannot remember the name of it.

 

the first one looks like the egr silonoid plug that mounts under the coil.

 

would this have been only for the stock coil or would it mount on an aftermarket as well ?

 

Here you go www.diy-efi.org/gmecm/ecm_info/ find your specific ECM. Go to that page and click on pages at bottom for schematics.

 

First connector, by location and connector type/size...EGR solinoid

Second "connector" 3 bare pins...no idea ATM

Third, MAT sensor connector. If the MAT has a connector on it, that wire run has another identical connector about a foot from the sensor.

 

Yes the first one should be fro the EGR solinoid. As for the broken one with the 3 pins, I need to know the colour of the 3 wires. And the 3rd one... What year is your car??? the wiring harness changed from 87-88 to 89 and then again for 90-92.

 

Car is an 87 IROC, L98 , what more do you need to know ?

 

OK .. what are the colours of the 3 wires in the 3rd pic...the broken connector with just the pins out??

 

Are the two wires for the last picture in fact ...pink/black, and is the other Black, or is a a Brown colour?? You may need to degrease it to be sure.

 

I'll clean up the wires, and post some pics tonight. Thanks for your help thus far, its definitely appreciated.

 

Does anyone sell replacements for these jacked up connectors ? (with the exception of getting a new wiring harness)

 

Sounds good, and no porblem, glad to help out. And yes you can buy alot of the different pigtails for the connectors, but most have to be bought right from GM, so it can get costly...sometimes..

 

Alright, got some pics, not the greatest quality but will have to do.





















So... any ideas Kaz? 9( or anyone for that matter)

 

OK... this is getting interesting here..LOL! Tha first pic again is for the EGR solinoid. The other two wire connector pic... the Pink/Black and brown one is for the Air Selec Valve, which is part of the Purge canister system. Now this imfamous 3 wire plug that is broken is giving me some grief. What are the colour of the 3 wires, as these pics are hard to tell.??

 

exactly...

if you can post the wire colors we can sort it out by comparing to the wiring schematics.. BW

 

I agree that the first one is EGR solinoid but the second one really can't be for the cannister purge or PEDEs valve. The PEDEs valve is on the other side of the engine and the cannister is way up front on a Camaro and on the other side for a Firebird, he shows that connector sitting on top of the brake master cylinder, too far for it to go to connect to those things. i still say it is the MAT sensor connector, either the one for the sensor or the other connector a foot further down that wire run.

 

Let me try once more.



Best I can tell the wires are

Green
Black/orange
Purple



These wires are Black and red.

 

Please note that aside from the identified EGR solenoid connector, there are 2 other connectors.

One that has a destroyed connector that has the following wires.

Black/orange
Green
Purple

The other has a connector that is badly burnt and has the following wires.

Black
Red

Both of these wires are situated on the right side of the engine bay (when facing the car).

The one that has a destroyed connector was long enough to reach the bottom of the car ( the reason it got destroyed, it was hanging under the engine bay while driving one day).

The other was mauled by the headers I believe. ( headers rock but if you have cable management issues, be prepared for some crispy shiyet under the hood. )

Any ideas gents ?

 

bump

 

ok, well does anyone know of a site that will tell me what the wire combo's are ?

 

Ok, the 3 wire connector that was destroyed... The orange/black wire may be tan/black (tan kinda turns orange with age and heat) this connector goes to the TCC on the trans and has wires colored dark green, purple and tan/black. Go under your car and see if there is an electrical connector pluged in on the driver side near the top (facing downward)

 

Pardon my ignorance, but what purpose does the TCC serve?

 

Torque converter control, it controls the lockup and un-lock of the torque converter.

 

remind me never to switch out of tpi... ever... ill put tpi on a 454 small block... i dont care how much it hurts performance....

 

believe me, I second the notion.. I'd take TPI over carb any day, but damn all these sensors and crap.

 

Im at work right now and will check that out tonight, but tell me, where can I aquire a new connector if it is that connector ? Am I going to need to hit the bone yards ?

 

Also, what of that black / red connector that got charbroiled ? Any idea of what that is? I appreciate all of the assistance you all have provided thus far. My IROC has a host of minor problems, many centered around the headers having a BBQ in my engine bay. Surprisingly that jacked up TCC connector does not seem to effect driveability. My Torque convertor locks up when it is supposed to.... ?

 

Are you sure the converter is locking up? without that connector it can't be. Those 3 wires in those colors only show up once in the schematic I have for your car and it is the TCC. If the converter is locking up then those wires are something not shown on the schematic I have..to test the converter lock up drive the car at a steady 50 mph and while keeping your foot on the gas, tap the brakes with your left foot, the tach should show a rise of a couple hundred RPM then back down when you let off, if this doesn't happen then those are the TCC wires (you said they would reach under the car.)
You can get the connector from either the junkyard or from GM ($$$$)
The other fried connector...I still think it is for the manifold air temp sensor. If there is a connector on the sensor, follow the wire run and you should come to another connector just like the one on the sensor (about a foot from the sensor connection), if it isn't hooked up there then thats what it goes to.

 

whats the part number for that TCC connector if thats it ?

 

Where is the MAT sensor, under the plenum ?

 

yea, its near the rear of the plenum... by the dizzy.

 

I don't suppose anyone has part numbers for the TCC connector ? I am going to need that.

 

ACDelco Part # PT143 Found on this site http://www.acdelco.com/html/catalog/index_auto.htm