HI this is what l think will work still some thing i can not find the right pin to the 3100 c1 or c2 just do not know what im looking at or to mach up with hear is what i can up with if wrong please tell that pin to use on the c1 c2 so it will be right thanks for all of your help
IF YOU CAN SEE WHAT I HAVE DONE OR TRYING TO DO ======================================================================================== Fiero C203 Connector ###### +++++ 3100 === PCM C1 C2 ++++++
Pin Wire Color Circuit Description PIN WIRE A == Tan/Blk==== Upshift Indicator Lamp control feed ****************** *********N/A-NO B == Org Fuel=== Pump fused 12v + power supply from fusebox****** *******8==DK GRN/WHT C == Brn/Wht=== Service Engine Soon lamp control feed *********?????? D == Lt Blu==== A/C Request (12v + when A/C is selected at HVAC head)****35=DK GRN/WHT E.== Tan===== Oil Gauge sender circuit feed **************** 70BRN==OR=C2-7 BRN/WHT F == Pnk/Blk=== Fused ECM Ign 12v power supply (ECM Fuse)**19=PNK=C500**E3 ?????? G == Yel ===== VSS High *********************6==YEL=== H == Brn===== VSS 2000ppm feed to Fiero ECM from speedo===N/A-NO J == Pnk ====== TBI Injector 1 fused 12v IGN power******* CAN NOT FIND PIN OUTPUT???? K == Pnk===== TBI Injector 2 fused 12v IGN power***** NOT SHURE WHAT PINOUT?????? L == Tan/Wht=== 12v + power feed to Fuel Pump from relay** LEAVE TO FUEL PUMP M == Blk===== VSS/Speedo Ground (connect to engine ground)*** GROUND***** N == Blk===== A/C Relay Clutch 12v + power feed (hot when HVAC is on A/C)*LOST????? P == Ppl===== TCC Brake Switch feed (N/C; hot in run) **22*BRN OR 28*TAN/BLK R == Ppl ===== VSS Low *********** NEED THE BUFFER CIRCUIT NEED TO MAKE????
HELP wire swap wiring and motor is form 1996 lumina 3100 just cant find the right pin out to mach the 3100 wires to the c203 c500 pluge l have posted some pages if that will help the post befor is what i think it should some i just do not no where they go all help welcome
Lets see C203 A-not used on auto tranny B-+12 volts to fuel pump relay C-SES lamp or MIL control from PCM CI pin 25 D- E- oil pressure from sending unit F-ECm ign power to PCM C1 pin 19 G-speedo feed to speedo from PCM C1 pin 13 DK green H-not used any more
J-only V6 cars use both fuses K- L- fuel pump feed o/p from fuel pump relay to fuel pump M- run to chassis ground N- P-TCC i/p from brake switch to PCM C1 pin 67 R-run to chassis ground
PCM C1 pin 15 is serial data feed to data link connector PCM C1 31 and 32 are for the coolant fan they put out a ground to the relays
[This message has been edited by FIEROFLYER (edited 11-27-2006).]
Fuel pump relay use the newer style used on the 3100 pin 85 is grounded pin 86 is connected to PCM C1 pin 8 pin 87 is connected to C203 pin B and oil pressure sensor pin C Pink wire pin 30 is connected to C203 pin L and oil pressure sensor pin D Gray wire this will feed the Fiero fuel pump through C L into the harness and back out through Fiero factory wiring. I am going by my diagrams for the 96 Beretta so hopefully the PCM pins match. I guess I should of kept a copy of the Lumina ones after all. Dan
First off l want to thank you for time and help. l now it takes a lot of time to help some one like me that is slow on geting some of this stuff 1st ?? from your post i will take it that i got some of it right? l will change what l did to what was in your post ok? one wire at a time
DAN on my c1 c2 3100 pin outs i have on pin outs on mine above 80 wires stop at pin 74??? where dose this {{ PCM C1 pin 15 is serial data feed to data link connector }} go to on the c203 c500?? ?? will i need my old oil unit an put it on my 3100?? my gauges pegs out when starts??
Take the OBD II data link connector from the 3100 donor and mount it in the stock Fiero location. Run the tan wire serial data from C1 pin 15 to the tan wire on the connector, do the same with the wire from C1 pin 39 class II data. The connector will also need grounds and a battery feed tap into the cig lighter orange wire for this. If done right you will be able to do full OBD II scans of your PCM. Dan
Thanks will do that I have started to cut the wiring Can i use the cruise contorol from the 3100 lumina in my fiero as mine dose not have it?????????????
I have played around with using the newer cruise on cars with out cruise but it never seems to operate correctly. No problem using on cars that already have cruise. Dan
As i was working on the wiring a new problem came up What to do about the shifter ?? Fiero 3 auto to 4 auto what needs to be changed to work????
I took out the shifter and cut one extra notch in the shifter "cogs" for the extra gear. It lined up for the 4T60E and the 4T65E perfectly. Then the shifter boot is is your only problem. It will get tight in park and 1st. But will work OK. You just wont get to see 4 3 2 1 on the shifter. It will read 3 2 1 -. The little square that the arrow is pointing to is a cut out that has not been completely removed. I took the pic just before the dermal tool totally cut the notch out.
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[This message has been edited by Rickady88GT (edited 12-01-2006).]
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12:53 AM
Rickady88GT Member
Posts: 10649 From: Central CA Registered: Dec 2002
I have played around with using the newer cruise on cars with out cruise but it never seems to operate correctly. No problem using on cars that already have cruise. Dan
? I had cruse in my 3100 SFI and took out ALL the old vacuum crap and put in the new servo type cruse. The wires from the cruse stalk worked perfectly with the new servo. Even the color codes on the GM wire diagrams were the same after nearly 10 years between them. Just get the cruse stalk and run the wires to the new servo. If it is wired right it will work great.
PLEASE HELP got wiring done? now will run 5 sec stops restart 5sec stops fuel pump is runing was runing be for i wired it to my c203 WHAT did i do wrong ????????
l was hoping to get by with out it .But i have rewired it back in and it runs and starts my oil gauge pigs out when the car is runing something i did worng??????
Wire the tach off of the coil and if your oil pressure gauge is pegging you probably have the wrong sensor it is for an idiot light instead of a gauge. Dan
thanks tack is working but at idle reads 1500 . when i rev the motor up will stop about 2500 i know this should be about 4000 or more wrong wire from the coil???
OIL will read ok if i use old oil sensor put air to and read right
I would check first to make sure you connected to the right spot on the ignition module. If it is a 4 cyl tach it would always read very high around double of what it should, unless the tach itself is no good. Dan
the blue arrow on that pluge is where i put my tack wire to it is a white wire
in the next pic is the other end of the coil pack it is the power pluge if i unpluge it car will not start no spark .so l think i have it on the right wire??????
Not quite sure if the Lumina gauges are computer fed like the Grand Am and such are by 96 but if they are the best way is to use a 3 pin coolant sensor with two pins for the PCM and the third for the gauge. On most there is three wires a black for chassis ground or sensor ground depending on car, a yellow which feeds the PCM and a green which is for the gauge which would be fed to the gauge through C500 pin C2. Dan
The rad fan is controlled by the PCM as long as it is getting its proper feed it will turn on your coolant fan. Personally I do not trust sensors so on my car the fan comes on with the ignition. Dan
some where i read that it will burn the motor up in the fan? my old fan was going bad so i used the one from the Lumina runs better and less amps coolant sensor has just 2 wires from it just looked .lt dose go to the pcm
Lets just say I have been running my fan with the ignition for over three years now with no problem. Most of the 3800SC swaps I do if the PCM gets programmed I get the fan temps lowered to turn the fan on earlier. Unfortunately there is not that kind of support for other GM PCM's. The PCM does not heat up and is perfectly fine mounted in the old location only problem us due to size you loose the storage space in the console. Dan
Cut off the Fiero tranny plug and splice in the proper wires from the new tranny plug. They both have the neutral start switch and reverse lights in them. Dan
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04:55 PM
82-T/A [At Work] Member
Posts: 24350 From: Florida USA Registered: Aug 2002
Thank sending you a email thanks for the help hear is a pic of what i have started my 3100
Oh man... have some pride. You should clean that sucker up and paint it before you put it into the Fiero. It won't cost you but a few hours and the cost of paint. The installation will be much CLEANER for both you and the car, and it will look nicer.
But I have to ask though... if you're going through ALL that trouble, why not try to get a 3400 V6?
