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1MZ FE v6 swap starting issues (Fixed & Running) - 6G Celicas Forums

Topic #94030 30 posts Started by Lamont
Lamont
#1
As some of you know I'm in the process of completing a 1MZ-FE V6 swap into my 94 GT and I am currently having starting issues. I started troubleshooting a few days back once I had the motor installed and all the wiring connected. My findings so far; There is no CEL, I have 0 spark on all 6 cylinders, there is fuel pressure at the rail, and my compression numbers are:

cyl1 - 200
cyl2 - 200
cyl3 - 200
cyl4 - 196
cyl5 - 198
cyl6 - 205

I also don't get the CEL with the key in the "on" position, and as richee3 indicated this means the ECU isn't getting power. I was hoping it was something simple like the igniter, but with no power to the ECU I will try and diagnose why there is no power before buying anymore parts. Today I will check all my fuses and relays with a multi-meter. I would also like to know the ECU power pin locations for the 1MZ-FE so that I can check those as well. This way if power is present at the ECU we can assume that the problem could be a bad ECU. Any help would be great guys!!

Thank you
Lamont

This post has been edited by Lamont: Nov 9, 2014 - 10:48 PM
Smaay
#2
Lets start with the ECU. what is the part number on it?

the power pins for the ECU are as follows:

Pin A14 (BATT) should be a black wire with yellow trace and have 12 V on it constantly.

pin A23 (+B) should be a black wire with yellow trace and have 12 V on it with the key in the ON position.
2001 Celica GT-S Turbo1997 Supra TT 6speed1997 Celica 3MZ/1MZ swap1990 Celica All-Trac
Lamont
#3
>
QUOTE (Smaay @ Nov 5, 2014 - 4:24 PM) *
>Lets start with the ECU. what is the part number on it?

the power pins for the ECU are as follows:

Pin A14 (BATT) should be a black wire with yellow trace and have 12 V on it constantly.

pin A23 (+B) should be a black wire with yellow trace and have 12 V on it with the key in the ON position.


The ECU is part#: 89661-06400

I will check those pins to chassis ground now and reply with results in a few.
Lamont
#4
>
QUOTE (Smaay @ Nov 5, 2014 - 4:24 PM) *
>Lets start with the ECU. what is the part number on it?

the power pins for the ECU are as follows:

Pin A14 (BATT) should be a black wire with yellow trace and have 12 V on it constantly.

pin A23 (+B) should be a black wire with yellow trace and have 12 V on it with the key in the ON position.


Pin A14 was pink and had a constant 11.96 volts

Pin A23 was Black and yellow and had 0 volts key off and key in on position

This post has been edited by Lamont: Nov 5, 2014 - 5:55 PM
Smaay
#5
ok yes its pink because this is going in an ST correct? I dont have my spreadsheet for your build in front of me but the ST celica its a pink wire. OK good it has constant voltage.

ok with A23 not getting any power you need to check the EFI relay. have someone listen at the relay anr turn the key to ON, you should hear it click.

another thing to check is the COR (circuit opening relay) its the relay right next to the ECU for the fuel pump. with the key in the ON position, make sure you have power at pin 2

also check the fuse IGN, its a 7.5 amp fuse.

when I get home ill get my spreadsheet out for you and see what color wires are supposed to be

This post has been edited by Smaay: Nov 5, 2014 - 6:09 PM
2001 Celica GT-S Turbo1997 Supra TT 6speed1997 Celica 3MZ/1MZ swap1990 Celica All-Trac
Lamont
#6
>
QUOTE (Smaay @ Nov 5, 2014 - 6:08 PM) *
>ok yes its pink because this is going in an ST correct? I dont have my spreadsheet for your build in front of me but the ST celica its a pink wire. OK good it has constant voltage.

ok with A23 not getting any power you need to check the EFI relay. have someone listen at the relay anr turn the key to ON, you should hear it click.

another thing to check is the COR (circuit opening relay) its the relay right next to the ECU for the fuel pump. with the key in the ON position, make sure you have power at pin 2

also check the fuse IGN, its a 7.5 amp fuse.

when I get home ill get my spreadsheet out for you and see what color wires are supposed to be


This is going into a 94 GT. I will check the relays and fuses tomorrow. It is too dark to see anything now.
Smaay
#7
ok i was losing my mind for a second. yes that wire is pink on the 94 also.

ill send you the 94 celica drawing.
2001 Celica GT-S Turbo1997 Supra TT 6speed1997 Celica 3MZ/1MZ swap1990 Celica All-Trac
Lamont
#8
>
QUOTE (Smaay @ Nov 5, 2014 - 7:08 PM) *
>ok yes its pink because this is going in an ST correct? I dont have my spreadsheet for your build in front of me but the ST celica its a pink wire. OK good it has constant voltage.

ok with A23 not getting any power you need to check the EFI relay. have someone listen at the relay anr turn the key to ON, you should hear it click.

another thing to check is the COR (circuit opening relay) its the relay right next to the ECU for the fuel pump. with the key in the ON position, make sure you have power at pin 2

also check the fuse IGN, its a 7.5 amp fuse.

when I get home ill get my spreadsheet out for you and see what color wires are supposed to be


Update:
- EFI Main relay clicks with the key in the "on" position
- COR (circuit opening relay) 11.77 volts with the key in the "on" position
- IGN 7.5 amp fuse location 7 under dash fuse panel is good
- Starting/fuel injection 7.5 amp fuse location 14 under dash fuse panel is good
- EFI 15 amp fuse location 20 engine compartment fuse block is good
Smaay
#9
ok with the key in the ON position, check the diagnostic box at +B and see if you have power.


also check pin 4 on the MAF sensor plug. it should also be a black wire with yellow trace.

check the VSV's for the ACIS and EVAP and EGR. they all should have the same block with yellow trace for the power. If none of those have power with the key on thats the problem.

all of those are fed via a "jumper connector" and then a cap goes on it that shorts them all together. Its possible that cap got missed. MY BAD!!!! the junction connector is located between the ECU plugs and the rubber grommet. it should be wrapped in tape. there are several of those junctions, some are grounds (brown), some are power for the injectors and coils (black-red) and then switched power (black-yellow)

This post has been edited by Smaay: Nov 6, 2014 - 9:46 AM
2001 Celica GT-S Turbo1997 Supra TT 6speed1997 Celica 3MZ/1MZ swap1990 Celica All-Trac
Lamont
#10
>
QUOTE (Smaay @ Nov 6, 2014 - 9:30 AM) *
>ok with the key in the ON position, check the diagnostic box at +B and see if you have power.


also check pin 4 on the MAF sensor plug. it should also be a black wire with yellow trace.

check the VSV's for the ACIS and EVAP and EGR. they all should have the same block with yellow trace for the power. If none of those have power with the key on thats the problem.

all of those are fed via a "jumper connector" and then a cap goes on it that shorts them all together. Its possible that cap got missed. MY BAD!!!! the junction connector is located between the ECU plugs and the rubber grommet. it should be wrapped in tape. there are several of those junctions, some are grounds (brown), some are power for the injectors and coils (black-red) and then switched power (black-yellow)



Update:
All with key in "ON" position
- diagnostic box +B = 0 volts
- pin 4 MAF black wire with yellow trace 0 volts
- VSV'S black wires with yellow trace 0 volts
- Jumper connector cap in place black wires with yellow trace 0 volts all connections
- EFI Main position F main fuse block #5 black wires with yellow trace 11.75 volts
Smaay
#11
you found the jumper connector and every one of them has 0V? and you have 12V coming out of pin 5 on the main EFI relay? thats the feed that should go to that jumper connector. There should be a black with yellow wire that comes out of the EFI relay and splits. one run goes to the COR at pin 2 and the other run goes to the jumper connector.

need to find that wire. Dang man i really feel bad that you are having this trouble. I checked everything before I sent it. Its going to be 1 wire.

This post has been edited by Smaay: Nov 6, 2014 - 4:30 PM
2001 Celica GT-S Turbo1997 Supra TT 6speed1997 Celica 3MZ/1MZ swap1990 Celica All-Trac
Lamont
#12
>
QUOTE (Smaay @ Nov 6, 2014 - 4:18 PM) *
>thats the problem!!!! ok find that connector up by the grommet through the firewall. its going to be a plug that all those black with yellow wires go into. Its missing the cap. get a picture of it and Ill get it to you ASAP.


The cap appears to be in place. I also checked the voltage on every wire connected to the block and they all have o voltage. Here are a few pictures:






Smaay
#13
yeah thats the one, the cap is there. so now we gotta figure out why its not getting power. there is going to be 1 wire coming off the EFI relay, same colors, that feeds that connector. Need to trace that wire from the EA1 plug. Follow the wire from pin 2 on the COR. that is the same feed line for the junction box. If you cant find the split from it. you can make your own jumper wire.

just T into the black-yellow wire coming off pin 2 in the COR and T it into the wire that going into +B. That will feed all the other B-Y wires too.
2001 Celica GT-S Turbo1997 Supra TT 6speed1997 Celica 3MZ/1MZ swap1990 Celica All-Trac
Lamont
#14
>
QUOTE (Smaay @ Nov 6, 2014 - 8:19 PM) *
>yeah thats the one, the cap is there. so now we gotta figure out why its not getting power. there is going to be 1 wire coming off the EFI relay, same colors, that feeds that connector. Need to trace that wire from the EA1 plug. Follow the wire from pin 2 on the COR. that is the same feed line for the junction box. If you cant find the split from it. you can make your own jumper wire.

just T into the black-yellow wire coming off pin 2 in the COR and T it into the wire that going into +B. That will feed all the other B-Y wires too.


I made the jumper cable from pin 2 of the COR to pin A23. I now have power at all +B locations previously mentioned. I also have a CEL on with the key in the "on" position. I haven't attempted to start the car yet since I promised my wife I would let her video the first start biggrin.gif . I will attempt to start the car sometime tomorrow.

Thanks again
Lamont
njccmd2002
#15
Wow props to smay. He knows his ****.
Learned a lot in 10 years...I hardly log in anymore, last loginToday Sept 6 2019, and I was forced just to clarify a post. LOLIf you PM me and I dont respond, dont fret or cry. Im alive, better post your questions in the thread below, maybe I log back in2grfe Swapped...Why I chose the 2GR, before you ask read here...A great civilization is not conquered from without until it has destroyed itself from within.@llamaraxing in Instagram is the best way to find me. I hardly log here anymore.
Lamont
#16
>
QUOTE (njccmd2002 @ Nov 7, 2014 - 5:13 PM) *
>Wow props to smay. He knows his ****.


Agreed, he is very knowledgeable and walked me through the whole process. I can tackle most mechanical jobs, but wiring is something I'm not comfortable with.
Box
#18
Woooo, now someone should build me one. tongue.gif
2001 Miata LS 5-speed
Arturio55
#19
Looks like that first rev scared her lol.. glad youre done tho
QUOTE (Azncelica @ Mar 4, 2012 - 11:43 PM)I started with what I know to do, I swap engine into my car, I knew it was too much work to make it a AWD. I kept it FWD. Went to take a crack at doing the wiring conversion. Than, I realize, shoot, this is out of my league.
Lamont
#20
>
QUOTE (Arturio55 @ Nov 9, 2014 - 12:27 AM) *
>Looks like that first rev scared her lol.. glad youre done tho


Yeah she said she wasn't expecting it to be that loud. I still have to get the exhaust done and the passenger engine mount, so not quite done yet rolleyes.gif
Arturio55
#21
>
QUOTE (Lamont @ Nov 9, 2014 - 11:02 AM) *
>>
QUOTE (Arturio55 @ Nov 9, 2014 - 12:27 AM) *
>Looks like that first rev scared her lol.. glad youre done tho


Yeah she said she wasn't expecting it to be that loud. I still have to get the exhaust done and the passenger engine mount, so not quite done yet rolleyes.gif


You going dual?
QUOTE (Azncelica @ Mar 4, 2012 - 11:43 PM)I started with what I know to do, I swap engine into my car, I knew it was too much work to make it a AWD. I kept it FWD. Went to take a crack at doing the wiring conversion. Than, I realize, shoot, this is out of my league.
Box
#22
I know in previous swaps allegedly there's not enough room for a true dual.
2001 Miata LS 5-speed
Lamont
#23
>
QUOTE (Arturio55 @ Nov 9, 2014 - 12:54 PM) *
>>
QUOTE (Lamont @ Nov 9, 2014 - 11:02 AM) *
>>
QUOTE (Arturio55 @ Nov 9, 2014 - 12:27 AM) *
>Looks like that first rev scared her lol.. glad youre done tho


Yeah she said she wasn't expecting it to be that loud. I still have to get the exhaust done and the passenger engine mount, so not quite done yet rolleyes.gif


You going dual?


No, I'm going with 2 1/2 with a decent resonator and magnaflow muffler.

>
QUOTE (Box @ Nov 9, 2014 - 1:36 PM) *
>I know in previous swaps allegedly there's not enough room for a true dual.


I think there is room to do it, but 190hp doesn't justify the extra work lol. Now once I go twin turbo then yeah laugh.gif . I kid never doing that. This car was never supposed to be a project. I'm building an 90 Alltrac and if my motor never blew this was never even considered, but things went from bad to worse and I had to do something. A decent replacement 5S-FE with full rebuild would have been is the same ballpark as a 1MZ-FE straight swap with no rebuild. So I went for more HP and blew the budget redface.gif
Arturio55
#24
Yea speaking of, you ever get the paint done on that alltrac? I'd love to see (and drive) it
QUOTE (Azncelica @ Mar 4, 2012 - 11:43 PM)I started with what I know to do, I swap engine into my car, I knew it was too much work to make it a AWD. I kept it FWD. Went to take a crack at doing the wiring conversion. Than, I realize, shoot, this is out of my league.
Smaay
#25
glad you got it running. I cant see your video, says its corrupt.
2001 Celica GT-S Turbo1997 Supra TT 6speed1997 Celica 3MZ/1MZ swap1990 Celica All-Trac
kurt95gt
#26
I took my v6 swap to 2 shops
both refused to run duals due to lacknowledge of space for 2 pipes under the car.

Now weat her or not they are lieing idk
95 gt coupe, v6 swap weekend toy99 gt hatch beams swapped wife's94 st hatch my daily driverhttp://www.6gc.net/forums/index.php?showtopic=82235n
kevin311
#27
Nice work Lamont. Glad you were able to get her running.
Arturio55
#28
>
QUOTE (kurt95gt @ Nov 10, 2014 - 7:11 AM) *
>I took my v6 swap to 2 shops
both refused to run duals due to lacknowledge of space for 2 pipes under the car.

Now weat her or not they are lieing idk


Money talks
QUOTE (Azncelica @ Mar 4, 2012 - 11:43 PM)I started with what I know to do, I swap engine into my car, I knew it was too much work to make it a AWD. I kept it FWD. Went to take a crack at doing the wiring conversion. Than, I realize, shoot, this is out of my league.
kurt95gt
#29
I was willing to pay 400 for the catback (witch is,alot at this shop)

They said cash doesnt matter unless I wanted 2 inch or smaller piping no way it was going to happen
95 gt coupe, v6 swap weekend toy99 gt hatch beams swapped wife's94 st hatch my daily driverhttp://www.6gc.net/forums/index.php?showtopic=82235n
Box
#30
Dual 2" would work well, considering the ES300 had single 2.25" piping.
2001 Miata LS 5-speed
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