Car wont turn over after swap!

Conga1991 · 09-13-2010, 04:02 AM

Alright so first thing is details. I just swapped a 7mgte into my 7mge supra. I have the same year ecu with harness and motor but my body is 88 which doesnt make a difference since pre 89 are the same. The harness was for a automatic and decided to use a R154 tranny. So I researched how to bypass the nuetral system and spliced the two wires off of one round plug together.

Things I havent done yet is put the Turbo tachometer in yet and thats the only thing. I used the original NA starter and figured I didnt need to change that out. I also got a 100 amp fuse for the alternator, is that the right one or is it a 80 amp? originally there was just a wire connecting to each side to get power to the alternator. There is two small plugs from the harness next to the ecu that dont have a place to pug into, one is black and the other is yellow. And I havent conneted 3 wires that go to the water neck, they are the ones that slide onto the metal like the fan shroud and coolant temp switch. Other then that everything is connected.

There is power because I replaced the battery the other day.

Any and all sugestions are welcome to what the problem might be?

CanadianBak'inSupra · 09-13-2010, 12:53 PM

what happens when you turn the key??
plz explain...

because i pulled a 7m engine recantly and forgot some starter wires...

Conga1991 · 09-13-2010, 06:23 PM

When I turn the key to turn it over theres one click noise coming from where the ecu is, which was kind of strange and I couldnt pin point where exactly where it was coming from.
Also the fuel is going cuz I hear a spray and I have a little fuel leak which Ill fix as well as a small coolant leak on my floor.

916MKIIIx2 · 09-13-2010, 06:26 PM

you might want to unplug the fuel injection until the starter atleast starts kicking, so you don't flood the cylinders. Take a vantage or something to the starter wires and make sure you're getting power, you can do an amp test by cranking the started while having the leads in the proper position on the started case and on the big ass wire bolt attached to it, i think thats right atleast its been awhile.

Conga1991 · 09-13-2010, 07:02 PM

okay. when you mean by unplugging the fuel injection you mean each wires to the injectors right?

916MKIIIx2 · 09-13-2010, 07:49 PM

EFI fuse should do it

CanadianBak'inSupra · 09-14-2010, 12:26 AM

Quote:

Originally Posted by Conga1991

When I turn the key to turn it over theres one click noise coming from where the ecu is, which was kind of strange and I couldnt pin point where exactly where it was coming from.
Also the fuel is going cuz I hear a spray and I have a little fuel leak which Ill fix as well as a small coolant leak on my floor.

when i did the swap same clicking happened it was wierd.

A.starter was hooked up wrong
B.battery was dead (check that you have proper voltage.)

you need air fuel and spark.
your missing one...

916MKIIIx2 · 09-14-2010, 05:12 AM

FYI, you pull the EFI fuse so your car wont be spitting fuel into the cylinders while doing voltage and amps checks on the starter, pulling the EFI fuse will in no way hinder you from making sure your "starter" is working, go to google and type in starter AMP test, and starter voltage test to see what you need to do. "I AM IN NO WAY SAYING THE EFI FUSE IS BAD" Just pull it before you do cranking tests.

depami · 09-14-2010, 04:55 PM

The alarm system can also disable the starter.

t12tninja · 10-04-2010, 04:07 PM

i would say check your grounds cause i had the same issue but i didnt do a swap but it sounds like my problem check all the grounds and mine was the ground in the steering colum

09-13-2010, 04:02 AM	#1
Conga1991 3" Exhaust Join Date: Jun 2009 Location: Avondale, AZ Posts: 169	Car wont turn over after swap! Alright so first thing is details. I just swapped a 7mgte into my 7mge supra. I have the same year ecu with harness and motor but my body is 88 which doesnt make a difference since pre 89 are the same. The harness was for a automatic and decided to use a R154 tranny. So I researched how to bypass the nuetral system and spliced the two wires off of one round plug together. Things I havent done yet is put the Turbo tachometer in yet and thats the only thing. I used the original NA starter and figured I didnt need to change that out. I also got a 100 amp fuse for the alternator, is that the right one or is it a 80 amp? originally there was just a wire connecting to each side to get power to the alternator. There is two small plugs from the harness next to the ecu that dont have a place to pug into, one is black and the other is yellow. And I havent conneted 3 wires that go to the water neck, they are the ones that slide onto the metal like the fan shroud and coolant temp switch. Other then that everything is connected. There is power because I replaced the battery the other day. Any and all sugestions are welcome to what the problem might be? Last edited by Conga1991; 09-13-2010 at 07:04 PM.

09-13-2010, 12:53 PM	#2
CanadianBak'inSupra Official hall monitor / search nazi - NO SOUP FOR YOU! Join Date: Oct 2009 Location: Canada, BC Posts: 837	what happens when you turn the key?? plz explain... because i pulled a 7m engine recantly and forgot some starter wires... __________________ 1984 supra - 1uzfe - w58 - 4.10 - 1 piece aluminum shaft.

09-14-2010, 04:55 PM	#9
depami Stock Join Date: Apr 2010 Location: Cleveland, MN Posts: 18	The alarm system can also disable the starter. __________________ Denny 82 5 sp 928 - Guards Red 86.5 auto 928 - Meteor Metalic - No Rub Strips 86.5 5 sp Supra SR/SS - Amethyst 92 FlightCraft 18 XLT 94 1200 Sportster 01 F150

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09-13-2010, 06:23 PM	#3
Conga1991 3" Exhaust Join Date: Jun 2009 Location: Avondale, AZ Posts: 169	When I turn the key to turn it over theres one click noise coming from where the ecu is, which was kind of strange and I couldnt pin point where exactly where it was coming from. Also the fuel is going cuz I hear a spray and I have a little fuel leak which Ill fix as well as a small coolant leak on my floor.

09-13-2010, 06:26 PM	#4
916MKIIIx2 3" Exhaust Join Date: Nov 2008 Location: California Posts: 152	you might want to unplug the fuel injection until the starter atleast starts kicking, so you don't flood the cylinders. Take a vantage or something to the starter wires and make sure you're getting power, you can do an amp test by cranking the started while having the leads in the proper position on the started case and on the big ass wire bolt attached to it, i think thats right atleast its been awhile.

09-13-2010, 07:02 PM	#5
Conga1991 3" Exhaust Join Date: Jun 2009 Location: Avondale, AZ Posts: 169	okay. when you mean by unplugging the fuel injection you mean each wires to the injectors right?

09-13-2010, 07:49 PM	#6
916MKIIIx2 3" Exhaust Join Date: Nov 2008 Location: California Posts: 152	EFI fuse should do it

09-14-2010, 05:12 AM	#8
916MKIIIx2 3" Exhaust Join Date: Nov 2008 Location: California Posts: 152	FYI, you pull the EFI fuse so your car wont be spitting fuel into the cylinders while doing voltage and amps checks on the starter, pulling the EFI fuse will in no way hinder you from making sure your "starter" is working, go to google and type in starter AMP test, and starter voltage test to see what you need to do. "I AM IN NO WAY SAYING THE EFI FUSE IS BAD" Just pull it before you do cranking tests.

10-04-2010, 04:07 PM	#10
t12tninja Intake Join Date: Jul 2010 Location: texas Posts: 40	i would say check your grounds cause i had the same issue but i didnt do a swap but it sounds like my problem check all the grounds and mine was the ground in the steering colum