c4 crossfire to carb
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c4 crossfire to carb
hey everyone im going ahead with the crossfir to carb injection. the wiring on the crossfire has driven me nuts so ive given up. i currently have all of the wires for the ecu removed and harness removed. i have 5 wires that go down to the transmission. a light blue. a pink w/ black stripe. brown w/ white strip. brown with black stripe and a purple. the light blue goes to the blue ecu connector and the brown w/ black stripe to red ecu connector. i want to remove this whole harness. so where do i go from here? because i have no idea what the wires are for.
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From: Marco Island Florida
without a wiring diagram in front of me, I would guess that one is for the neutral safety switch and another one for the reverse lights and possibly another for ground. I don't know if there is a tranny temp sender in there or not. Sorry, I know I'm not a lot of help, but a few minutes with a meter or test light would narrow things down quickly.
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alright well ive got a 4 prong plug with 3 wires in it. and a 2 prong plug with 2 wires. the reverse lights still work. so looking at ecklers http://www.ecklerscorvette.com/1984+...1982-1991.html lock up switch kit i can cut two of the wires from the 4 prong plug. but what do i do with the other 2... there colors are the brown/white and brown/black
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so far what ive done is cut the cruise control switch to the brake light. dont need that. made it so when i hit the brake lights the TCC will disengage and i wont have to use a switch. http://www.700r4.com/tech/tcc/brake_install/index.shtml something like so. now is there anything else that i need to do? i still have one connector that is unacounted for which looks like so https://fbcdn-sphotos-h-a.akamaihd.n...cb77164340dadb
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From: moraga ca
When I carbed my 84, I used the overdrive switch on the console as a manual switch for the tcc. I used the converter lockup as a 5th gear on the freeway. Remember to turn it off when coming to a stop. If you do it right, the "overdrive" light on the console will light up when the converter is locked up.
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hmm ive never seen the light before on the dash. and ill take a look around for the switch. but so far i have it wired to the brake switch so i dont forget to turn it off while coming to a stop. it will automatically do it itself. second question. have any idea what the second 2 prong plug is for
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the whole point of making my own was to save the money. the kits they provide dont do much at all. except some longer wires and a new connector. which i already have and i can extend the wires myself. can someone take a look at this connector that im asking about PLEASE because the kit they send does not provide one of these ! so even if i do buy one ill be screwed...
also the wires on the connector are pink w/ black stripe and tan or brown w/ white stripe
http://alldatapro.com/alldata/PRO~V3...29421/42272750
theres a picture so its for the vehicle speed sensor... where does this connect to in the wire harness on inside of car?
also the wires on the connector are pink w/ black stripe and tan or brown w/ white stripe
http://alldatapro.com/alldata/PRO~V3...29421/42272750
theres a picture so its for the vehicle speed sensor... where does this connect to in the wire harness on inside of car?
Last edited by infernoman; Jun 11, 2013 at 07:54 PM.
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From: moraga ca
the whole point of making my own was to save the money. the kits they provide dont do much at all. except some longer wires and a new connector. which i already have and i can extend the wires myself. can someone take a look at this connector that im asking about PLEASE because the kit they send does not provide one of these ! so even if i do buy one ill be screwed...
also the wires on the connector are pink w/ black stripe and tan or brown w/ white stripe
http://alldatapro.com/alldata/PRO~V3...29421/42272750
theres a picture so its for the vehicle speed sensor... where does this connect to in the wire harness on inside of car?
also the wires on the connector are pink w/ black stripe and tan or brown w/ white stripe
http://alldatapro.com/alldata/PRO~V3...29421/42272750
theres a picture so its for the vehicle speed sensor... where does this connect to in the wire harness on inside of car?
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yeah i do understand that. but im trying to remove the ecu aswell as do the TCC. ive acomplished getting power to the tcc to get it to lock up properly while not having a switch. when i hit my brakes it cuts the 12 volt to the TCC and unlocks it. now i removed the main engine harness to clean it up and unplugged it from the passenger side. the TCC wires aswell as speed sensor wires were in there that go to the transmission. where do the go to under the passenger side of the dash.
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From: moraga ca
My ecu is in a cabinet in the garage. There are 2 wires to the lockup solenoid. One is 12 volts, one is ground. Complete the circuit and your converter will lock (except in first gear). You can eliminate all the stock wiring and run 12 volts off any ignition hot circuit.
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do you know by chance which terminal the ground goes to. is it the wire that ran from the ecu tan/blacki i beleive. i have a purple a tan/black and a light blue. the light blue also went to the ecu.
http://i171.photobucket.com/albums/u...ical/OD_84.jpg the picture here says the light blue is for the pressure switch. anyone have any idea what that does? c451 is the tan/black which goes to the TCC solenoid fourth gear switch. but i also have a purple wire that goes gown to the transmission. i tried emailing ecklerscorvette but still have had no reply. ill can figure out the VSS later i just dont want to burn up the torque converter driving while not having it locked.
so all 3 wires go to the TCC solenoid and fourth gear switch. the purple wire comes from the torque converter brake switch. which is correctly wired. the light blue wire is for the pressure switch. which if you add 12 volt to that the converter it will lock up in 2nd and 3rd aswell as 4th i beleive. so do i add ground to the tan/black?
http://alldatapro.com/alldata/PRO~V3...57320/41890816
the light blue apparently is the 4th gear signal for the ecu. do i need it? and the tan/black apparently needs 12v so where the hell does the ground go to? because from these 2 diagrams it says the purple wire and tan/black wire are both 12v
http://i171.photobucket.com/albums/u...ical/OD_84.jpg the picture here says the light blue is for the pressure switch. anyone have any idea what that does? c451 is the tan/black which goes to the TCC solenoid fourth gear switch. but i also have a purple wire that goes gown to the transmission. i tried emailing ecklerscorvette but still have had no reply. ill can figure out the VSS later i just dont want to burn up the torque converter driving while not having it locked.
so all 3 wires go to the TCC solenoid and fourth gear switch. the purple wire comes from the torque converter brake switch. which is correctly wired. the light blue wire is for the pressure switch. which if you add 12 volt to that the converter it will lock up in 2nd and 3rd aswell as 4th i beleive. so do i add ground to the tan/black?
http://alldatapro.com/alldata/PRO~V3...57320/41890816
the light blue apparently is the 4th gear signal for the ecu. do i need it? and the tan/black apparently needs 12v so where the hell does the ground go to? because from these 2 diagrams it says the purple wire and tan/black wire are both 12v
Last edited by infernoman; Jun 13, 2013 at 08:40 PM.
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From: Wabasha Mn
I replaced the fourth gear pressure switch with a normally open switch and ran the ground wire from the tcc solenoid to the 4th gear new switch(wire going to it was blue). This eliminates lock up in 2 and 3rd gear and when you shift into 4th gear the converter locks. I have a switch that I can have the converter in unlocked mode if I choose to.
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From: moraga ca
do you know by chance which terminal the ground goes to. is it the wire that ran from the ecu tan/blacki i beleive. i have a purple a tan/black and a light blue. the light blue also went to the ecu.
http://i171.photobucket.com/albums/u...ical/OD_84.jpg the picture here says the light blue is for the pressure switch. anyone have any idea what that does? c451 is the tan/black which goes to the TCC solenoid fourth gear switch. but i also have a purple wire that goes gown to the transmission. i tried emailing ecklerscorvette but still have had no reply. ill can figure out the VSS later i just dont want to burn up the torque converter driving while not having it locked.
so all 3 wires go to the TCC solenoid and fourth gear switch. the purple wire comes from the torque converter brake switch. which is correctly wired. the light blue wire is for the pressure switch. which if you add 12 volt to that the converter it will lock up in 2nd and 3rd aswell as 4th i beleive. so do i add ground to the tan/black?
http://alldatapro.com/alldata/PRO~V3...57320/41890816
the light blue apparently is the 4th gear signal for the ecu. do i need it? and the tan/black apparently needs 12v so where the hell does the ground go to? because from these 2 diagrams it says the purple wire and tan/black wire are both 12v
http://i171.photobucket.com/albums/u...ical/OD_84.jpg the picture here says the light blue is for the pressure switch. anyone have any idea what that does? c451 is the tan/black which goes to the TCC solenoid fourth gear switch. but i also have a purple wire that goes gown to the transmission. i tried emailing ecklerscorvette but still have had no reply. ill can figure out the VSS later i just dont want to burn up the torque converter driving while not having it locked.
so all 3 wires go to the TCC solenoid and fourth gear switch. the purple wire comes from the torque converter brake switch. which is correctly wired. the light blue wire is for the pressure switch. which if you add 12 volt to that the converter it will lock up in 2nd and 3rd aswell as 4th i beleive. so do i add ground to the tan/black?
http://alldatapro.com/alldata/PRO~V3...57320/41890816
the light blue apparently is the 4th gear signal for the ecu. do i need it? and the tan/black apparently needs 12v so where the hell does the ground go to? because from these 2 diagrams it says the purple wire and tan/black wire are both 12v
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You are not going to burn up your torque converter by driving with it unlocked. You don't need all the sensors and connectors on the driver's side of the tranny. Without the ecu, nobody cares which gear you are in. I don't have the schematic in front of me, but the lockup solenoid only has two terminals. Figure out which one's these are and go from there. A solenoid does not care which one is 12 volts and which one is ground.
also did you by chance run into any problems with your speedo working properly as the vehicle speed sensor is in the main engine and ecu harness and the wirring for that is also currently removed
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From: moraga ca
Keep the speedo sensor connected. It is the 2 wire one that goes to the tailshaft. Your speedo will work. You can tell if you have the lockup solenoid connected correctly by applying 12 volts to one of the terminals (engine and ignition off) and having the other terminal grounded. You can hear the lockup solenoid click. If you hear it, just wire that onto a console switch or use your overdrive swith.
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if i dont get the solenoid to click just start switching wires until it does?
also the wiring for the vss was into the main engine harness. and when we pulled it out the wires ripped out from the harness and i dont know where they go to anymore.
also the wiring for the vss was into the main engine harness. and when we pulled it out the wires ripped out from the harness and i dont know where they go to anymore.
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well the heads are off to be ported and polished. the intake is off to be ported and polished aswell as ceramic coated. the headers and head will be sent to be ceramic coated afterwards. got a 2 barrel carb for it which just got rebuilt w/ new jets ported polished with bigger butterflies. the valves are getting new seals put in and the valves being soaked in varsol to remove the carbon over the weekend. the wipers are fixed ! but they only work on high.... the only thing left to figure out is where those vss wires go to on the harness. and to fix the heater. the heater doesnt work on any of the speeds but the blower motor works if you put power to it. any ideas?