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driftn
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just seeing if anyone here knows what might be wrong with 4G63 i just put in my cordia, all the same wiring has been converted and all is connected except a wire at the coil pack and the only other thing is my timing belt is half tight half loose if this would make it run on 1 cyl (one tooth out maybe) or if it's the coil pack ??

bitza
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?????........If it's the same wiring what's wrong?.............are you running something different?

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driftn
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i pulled out one wire when i was half way through the convertion because it had like three joins in it but i think it went to the ignition but it has a stripped bit on the igntion wire on the ecu but a wiring diagram would be sweet, just for the bottom white wires closer to the fire wall and loom

driftn
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well i've worked it out to be iether coil or dirty spark plugs but i'm guessing it's the wire off the coil pack (longer white one ??) the shorter one is cut and re-connected with another runing to the comp but where does the longer one go???

bitza
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Here you go:

driftn
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i've definetley been looking in the right places coz i have that already printed but is really hard to read but i got the jist of it, thanks heaps i'll just keep going at it, i'll let you know what it was when i fix it, monday hopefully if it's timing, coil or sparkys or all of the above, and is this diagram for the single cam set up or am i just reading it wrong coz i'm sure the vr4 ecu has three connections not 2, and could it have something to do with the engine spark control ignition to the right and if so were is this located

bitza
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The diagram is for a standard 1.8 cordia, you didn't actually mention you had a VR4 in it, just a 4G63.

driftn
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woops i've got carried away, i put a twin cam cyclone turbo 4G63 motor in it i think the earlier model not water cooled oil pump (i've got one but the water pipe is snapped off so i stuck with the orginal one) the computer to the motor has the yellow wire not connected and i think it is the ignition control wire that i reckon goes to the coil pack but there already is one connected but not sure if the wire is on the right spot (there a little wire that goes to the coil pack (white one) but the is a wire coming out of that aswell have i got these connected worng or is it just to do with the rev guage or boost??? i'll try get a picture up with what i mean

driftn
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it's doing my head in having a reg-d car that runs just not good enough to drive (it starts then sounds like it just dies in the arse but stays alive just, is anything you may of come accross that could help ??

bitza
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I need clarification with a picture.............is it running cordia wiring or VR4?

driftn
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vr4 and that wire goes to the coil pack black box closest to the fire wall (i took the coil pack off and (black box) had a 2 ins and 1 out which it looks like the wire i didn't know where it when goes on the other in(top one) so i tried starting it again sounded better but still dies almost but i think it is definetly the timing now so tomorrow i have my mech that tought me most of what i know is coming to do the timing for me coz i reckon it's a tooth out (not confident myself) and would you have an alternater bracket and a crank pully thats un-needed. i'll let you know if i get it going

bitza
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Ok...........on your igniter you will see OC1, IB1, G, IB2, OC2.

OC1 runs to the first bank on the coils - 1 &4

IB1 runs from the ECU

G is ground

OC2 runs to the second bank on the coils - 2&3

IB2 runs afrom the ECU.

The other wire (Red) is switched ignition 12Volt.

Yes I have a spare harmonic balancer.........where do you live?

driftn
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cheers for that i'll have a sus at it tomoz, i live in adelaide, up noarlunga near colinaides, and would you have a spare altinator brace/bracket mine has snapped at the end ?? just enough tention to hold on the belt on atm. (enough to get it started) and thanks heaps again it's been a great help, hopefully we can go for a cruiz if there are enough of us in cordias (even if there isn't i will be anyway) haha

driftn
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well i think i've worked it out and in the 1G ecu pinouts no# 55 (blue wire with white line) isn't connected whitch is my (power transmitter for #2 and #3 coils) do you know where this wire goes and even by the sounds of it (that is the problem)

driftn
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sorry ment to say a blue wire with a yellow line next to #54

bitza
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Have a look at your power transistor...........does it have 5 wires coming out of it?

The wire you describe should be located on IB2.

Or is it disconnected from the ECU end?

driftn
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i'm not sur where the power transistor is ?? would you have a picture or can you discribe it for me

driftn
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connected at the comp but not sure where the wire goes too and  #54 goes in the wiring loom ?? it's a little confusing for me but i'm slowly getting there

bitza
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The power transistor is a little black box..........just follow the wiring loom and you'll find it...........has J22 embosed on it.

driftn
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j122 and yeah it's got five wires

bitza
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Do you have the 2 wires OC1 & OC2 from the power transistor running to the terminals of the coil pack?

You'll have to turn them upside down too see.

driftn
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yeah both of them one goes to the taco interface (out) and the other one goes to the bottom of the coil pack (black) does this sound right so far ?? i just cant find anywhere to bridge it in (maybe the #104 the neutral saftey switch (AT only,grounded in MTs) that ones just a guess though )

bitza
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The wire that goes to the tacho interface (out) is wrong, this out wire is to run the tacho in the dash board, both wires should go onto the negative side of each coil bank.......then run each wire to the 2 "in"s on the interface.

driftn
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yep all that is right but i'm still left with the blue with yellow line #55 that doesn't attact to anything ?? where about on the loom does it connect ??

bitza
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I'm not sure............I don't have a VR4 wiring diagram, where are you pulling these numbers from?

You must have a diagram, if not I'll find one for you.

driftn
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yeah it's the 1G ECU pinouts, can i just bridge it in the J122 but next Qs do you know whitch one ?? yellow and black or the yellow and green oc1 and oc2??

driftn
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i've got the diagram of the ecu but not where pin #55 connects too, i know where it is but where it goes is another thing ?? definetley have to go for a cruiz after all this

driftn
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i copied this from the colt convestion but is still a vr4 comp

1G ECU Pinouts, Horizontal Layout

 

Pin Connection   Pin Connection 101 Ground 106 Ground 102 Power supply 107 Power supply (to MPI Control Relay and ??) 103 Battery backup power supply (constant 12V) 108 Ignition switch - ST 104 Neutral safety switch (AT only, grounded in MTs) 109 Ignition pulse detect (tach) 105 Wastegate solenoid valve 110 Ignition switch - 1G   Pin Connection   Pin Connection 51 No. 1 Injector 60 No. 3 Injector 52 No. 2 Injector 61 No. 4 Injector 53 EGR Control Solenoid Valve (90-93 CA only, 94 all) 62 Purge control solenoid valve 54 Power transistor for #1 and #4 coils 63 MPI Control relay 55 Power transistor for #2 and #3 coils 64 Check engine light 56 MPI Control relay 65 Air conditioner relay 57 Fuel pressure control valve 66 MPI Control relay 58 Coil "A1" for idle speed control motor 67 Coil "B1" for idle speed control motor 59 Coil "A2" for idle speed control motor 68 Coil "B2" for idle speed control motor   Pin Connection   Pin Connection 1 Self-Diagnosis Output 13 Control relay (Fuel pump drive signal) 2 Diagnosis/Data transfer select terminal 14 Air flow sensor active filter reset (idle switch)
(switch with 6 if using a 91-94 ECU in a 90 or vvs)
Stock wire color - Green 3 Turbo gauge 15 EGR temperature sensor (90-93 CA only, 94 all) 4 Oxygen Sensor 16 Barometric pressure sensor (MAF) 5 Power steering oil pressure switch 17 Sensors ground 6 Idle position switch
(switch with 14 if using a 91-94 ECU in a 90 or vvs)
Stock wire color - Green/White 18 Vehicle speed sensor (reed switch) 7 Air conditioner switch 19 Throttle position sensor 8 Intake air temperature sensor (MAF) 20 Coolant temperature sensor 9 Detonation sensor 21 Crank angle sensor (RPM) 10 Air flow Sensor (MAF) 22 Top dead center sensor 11 ABS control unit (AWD, ABS only) 23 Power supply for MAF sensors (5volts) 12 Ignition timing adjustment connector 24 Sensors ground

bitza
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This is about as simple as it gets.............hopefully this helps you out.

driftn
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you are a legend that is exactly what i need but i'll be leaving it to the morning now. thanks heaps, and that explains the ignition for me too, why i didn't have to run a wire to it that is, update tomoz

bitza
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No problems............sorry for my poor drawing skills. HA HA. cool