3S-GTE USDM Turbo Engine need help!! :(

BulitSpongeTWO · 11-15-2009, 09:48 PM

OK so the swap went well. the JDM is in and the motor runs. took it around the block everything is ok but the speedo does not work and i have a connection i cannot figure out where it goes. the car is a 92 mr2 turbo. it has a rev1 90-93 jdm motor and tranny in it. what am i missing? anyone? the connection comes off of the intake side of the engine bay by the coolant tank.

BulitSpongeTWO · 11-16-2009, 06:49 PM

CJMR2T · 11-16-2009, 07:47 PM

Are you using the original USDM harness or a JDM harness? Also, what are the wire colors that go to the plug in question?

BulitSpongeTWO · 11-16-2009, 10:48 PM

Connector is a Gray with a white and black wires. US harness US ecu.

CJMR2T · 11-16-2009, 10:56 PM

Ok, because of its location and the wiring color and looking at the MR2 TEWD, My guess is its the Left ABS wheel speed sensor wiring....

CJMR2T · 11-16-2009, 10:59 PM

As for the Speedo not working, did you remember to hook the cable back up?

If the cable is hooked up, then chances are that its broke....

BulitSpongeTWO · 11-17-2009, 12:52 AM

ok thanks for the help. im going to check on it on wednesday when im free again. and idk if the cable is broke or not it is hooked up though. how hard are those to run??

BulitSpongeTWO · 11-17-2009, 12:52 AM

also if thats what it is where should it plug in??
the gray connector i mean

CJMR2T · 11-17-2009, 12:26 PM

The Left rear ABS sensor wiring pops through the strut tower / wheel wheel area all the way up to behind the water bottle. So the plug that that should be and plug in to should be somewhere in the corner behind the water bottle....

I've never had to change the cable about so I couldnt tell you how hard it is if the speedo cable is actually broken...

BulitSpongeTWO · 12-01-2009, 07:07 PM

ok so i checked for that and turns out.. no ABS lol. and the cable itself comes off of the harness leading to the bottom of the engine bay fuse box and then heads to the passenger cabin area. still no idea where it goes to. dont remember unplugging it either.

->side note is that my car is thrown code 43... any ideas?

CJMR2T · 12-01-2009, 07:48 PM

Just like I said, that connector is the ABS wheel speed sensor... All the harness's had the connector whether or not the car had ABS... Toyota did it so that ABS could be added as a dealer option... Dont worry about it, just tap it up to the harness (the same as it was from the factory)...

As for the 43, are you sure it wasn't a 42???? You said in the first post that your speedo wasn't working.. If the speedo doesn't work or is not hooked up, the ECU will not recieve the SPD signal. This will trigger a Code 42... being that yours wasn't working, you should be getting a 42.. 43 is no STA signal to the ECU.... If your really only getting a 43, then you dont really have much to worry about. The car might be a bit hard starting cause of it, but thats pretty much it... The problem will most likely be in the wiring since the car does crank..

BulitSpongeTWO · 12-02-2009, 06:00 PM

ok that makes sense and yea i checked it a couple times it was 43. and my speedo cable is fine i think the gear inside is broken. going to check when we change my clutch and flywheel. thanks for your help though

CJMR2T · 12-02-2009, 06:26 PM

Is your speedo reading at all????

If the gear is broke or what not, the speedo should not be working thus you should be getting a 42... Thats odd that your not...

Anyways, like I had said in the previous post, the 43 is no STA signal to the ECU. It is not a vital signal but should be fixed as it can cause hard starting especially when cold.. The ECU modifies fuel and timing during cranking to get the engine to fire easier and faster. Without the STA signal, the ECU does not know that you are cranking (trying to start) the engine so it doesn't modify the outputs like it should...

If you wanted to find the issue and fix it, the only real way to do it is start at the ECU and trace / check the STA signal wire unit you find the issue (most likely there is a break in the wirings somewhere). IIRC, there is atleast 1 splice point in the harness that could be a problem and also I'm pretty positive (with out looking at the TEWD) that the STA signal goes through the harness to harness plug in the engine bay fuse box (plug EA3 IIRC)...

BulitSpongeTWO · 12-03-2009, 08:17 AM

ok i'll check all that. i mean we used alldata to get a wire trace for it and everything checked out. think it could be cuz im using the JDM starter and not the US starter? cuz i could switch those out. no my speedo isnt registering speed or mileage. we hooked up a drill to the cable though and it is fine. so the issue is somewhere in the tranny or connection...

ssjmikeg · 12-03-2009, 02:34 PM

dude my speedo wnet out when i got mine as well. take the speedo cord out and the bolt out of the i gues its called the speedo gear converter or somin. anyway its atached to the back of the tran where the cord goes in. inside there is a gear that goes in the tran that is what was broke on mine. they may have not even put the key for the gear in it. check it out.

CJMR2T · 12-03-2009, 03:50 PM

No, the starter itself wont have any effect on the STA signal to the ECU...

What do you mean everything checked out?? Did you actually do a voltage test at the ECU?

If not, do that. Just back probe the STA signal wire at the ECU and crank the car and see if your getting 12v at the ECU while you are cranking...

If no 12v, then there is a problem in the wiring somewhere. If you do get 12v at the ECU, then your problem is in the ECU itself.

Like I said, its not an extremely important circuit and the worse problem you could have form it is harder starting..

BulitSpongeTWO · 12-03-2009, 07:34 PM

will i need to crack the tranny open to replace it? cuz i read about a test for that today. and how much was that part?

11-15-2009, 09:48 PM	#1 (permalink)
BulitSpongeTWO U.S. Marine Join Date: Dec 2008 Location: North Carolina Posts: 112 Thanks: 8 Thanked 1 Time in 1 Post Blog Entries: 1 iTrader Rating: (0/0% )	need help!! :( OK so the swap went well. the JDM is in and the motor runs. took it around the block everything is ok but the speedo does not work and i have a connection i cannot figure out where it goes. the car is a 92 mr2 turbo. it has a rev1 90-93 jdm motor and tranny in it. what am i missing? anyone? the connection comes off of the intake side of the engine bay by the coolant tank. Attached Thumbnails

11-16-2009, 06:49 PM	#2 (permalink)
BulitSpongeTWO U.S. Marine Join Date: Dec 2008 Location: North Carolina Posts: 112 Thanks: 8 Thanked 1 Time in 1 Post Blog Entries: 1 iTrader Rating: (0/0% )	bump

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11-16-2009, 07:47 PM	#3 (permalink)
CJMR2T Fabricator Join Date: Oct 2009 Location: Lakeland, FL Posts: 3,689 Thanks: 3 Thanked 356 Times in 337 Posts iTrader Rating: (4/100% )	Are you using the original USDM harness or a JDM harness? Also, what are the wire colors that go to the plug in question?

11-16-2009, 10:48 PM	#4 (permalink)
BulitSpongeTWO U.S. Marine Join Date: Dec 2008 Location: North Carolina Posts: 112 Thanks: 8 Thanked 1 Time in 1 Post Blog Entries: 1 iTrader Rating: (0/0% )	Connector is a Gray with a white and black wires. US harness US ecu.

11-16-2009, 10:56 PM	#5 (permalink)
CJMR2T Fabricator Join Date: Oct 2009 Location: Lakeland, FL Posts: 3,689 Thanks: 3 Thanked 356 Times in 337 Posts iTrader Rating: (4/100% )	Ok, because of its location and the wiring color and looking at the MR2 TEWD, My guess is its the Left ABS wheel speed sensor wiring....

11-16-2009, 10:59 PM	#6 (permalink)
CJMR2T Fabricator Join Date: Oct 2009 Location: Lakeland, FL Posts: 3,689 Thanks: 3 Thanked 356 Times in 337 Posts iTrader Rating: (4/100% )	As for the Speedo not working, did you remember to hook the cable back up? If the cable is hooked up, then chances are that its broke....

11-17-2009, 12:52 AM	#7 (permalink)
BulitSpongeTWO U.S. Marine Join Date: Dec 2008 Location: North Carolina Posts: 112 Thanks: 8 Thanked 1 Time in 1 Post Blog Entries: 1 iTrader Rating: (0/0% )	ok thanks for the help. im going to check on it on wednesday when im free again. and idk if the cable is broke or not it is hooked up though. how hard are those to run??

11-17-2009, 12:52 AM	#8 (permalink)
BulitSpongeTWO U.S. Marine Join Date: Dec 2008 Location: North Carolina Posts: 112 Thanks: 8 Thanked 1 Time in 1 Post Blog Entries: 1 iTrader Rating: (0/0% )	also if thats what it is where should it plug in?? the gray connector i mean

11-17-2009, 12:26 PM	#9 (permalink)
CJMR2T Fabricator Join Date: Oct 2009 Location: Lakeland, FL Posts: 3,689 Thanks: 3 Thanked 356 Times in 337 Posts iTrader Rating: (4/100% )	The Left rear ABS sensor wiring pops through the strut tower / wheel wheel area all the way up to behind the water bottle. So the plug that that should be and plug in to should be somewhere in the corner behind the water bottle.... I've never had to change the cable about so I couldnt tell you how hard it is if the speedo cable is actually broken...

12-01-2009, 07:07 PM	#10 (permalink)
BulitSpongeTWO U.S. Marine Join Date: Dec 2008 Location: North Carolina Posts: 112 Thanks: 8 Thanked 1 Time in 1 Post Blog Entries: 1 iTrader Rating: (0/0% )	ok so i checked for that and turns out.. no ABS lol. and the cable itself comes off of the harness leading to the bottom of the engine bay fuse box and then heads to the passenger cabin area. still no idea where it goes to. dont remember unplugging it either. ->side note is that my car is thrown code 43... any ideas?

12-01-2009, 07:48 PM	#11 (permalink)
CJMR2T Fabricator Join Date: Oct 2009 Location: Lakeland, FL Posts: 3,689 Thanks: 3 Thanked 356 Times in 337 Posts iTrader Rating: (4/100% )	Just like I said, that connector is the ABS wheel speed sensor... All the harness's had the connector whether or not the car had ABS... Toyota did it so that ABS could be added as a dealer option... Dont worry about it, just tap it up to the harness (the same as it was from the factory)... As for the 43, are you sure it wasn't a 42???? You said in the first post that your speedo wasn't working.. If the speedo doesn't work or is not hooked up, the ECU will not recieve the SPD signal. This will trigger a Code 42... being that yours wasn't working, you should be getting a 42.. 43 is no STA signal to the ECU.... If your really only getting a 43, then you dont really have much to worry about. The car might be a bit hard starting cause of it, but thats pretty much it... The problem will most likely be in the wiring since the car does crank..

12-02-2009, 06:00 PM	#12 (permalink)
BulitSpongeTWO U.S. Marine Join Date: Dec 2008 Location: North Carolina Posts: 112 Thanks: 8 Thanked 1 Time in 1 Post Blog Entries: 1 iTrader Rating: (0/0% )	ok that makes sense and yea i checked it a couple times it was 43. and my speedo cable is fine i think the gear inside is broken. going to check when we change my clutch and flywheel. thanks for your help though

12-02-2009, 06:26 PM	#13 (permalink)
CJMR2T Fabricator Join Date: Oct 2009 Location: Lakeland, FL Posts: 3,689 Thanks: 3 Thanked 356 Times in 337 Posts iTrader Rating: (4/100% )	Is your speedo reading at all???? If the gear is broke or what not, the speedo should not be working thus you should be getting a 42... Thats odd that your not... Anyways, like I had said in the previous post, the 43 is no STA signal to the ECU. It is not a vital signal but should be fixed as it can cause hard starting especially when cold.. The ECU modifies fuel and timing during cranking to get the engine to fire easier and faster. Without the STA signal, the ECU does not know that you are cranking (trying to start) the engine so it doesn't modify the outputs like it should... If you wanted to find the issue and fix it, the only real way to do it is start at the ECU and trace / check the STA signal wire unit you find the issue (most likely there is a break in the wirings somewhere). IIRC, there is atleast 1 splice point in the harness that could be a problem and also I'm pretty positive (with out looking at the TEWD) that the STA signal goes through the harness to harness plug in the engine bay fuse box (plug EA3 IIRC)...

12-03-2009, 08:17 AM	#14 (permalink)
BulitSpongeTWO U.S. Marine Join Date: Dec 2008 Location: North Carolina Posts: 112 Thanks: 8 Thanked 1 Time in 1 Post Blog Entries: 1 iTrader Rating: (0/0% )	ok i'll check all that. i mean we used alldata to get a wire trace for it and everything checked out. think it could be cuz im using the JDM starter and not the US starter? cuz i could switch those out. no my speedo isnt registering speed or mileage. we hooked up a drill to the cable though and it is fine. so the issue is somewhere in the tranny or connection...

12-03-2009, 02:34 PM	#15 (permalink)
ssjmikeg No Skills Join Date: Sep 2007 Posts: 38 Thanks: 2 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	dude my speedo wnet out when i got mine as well. take the speedo cord out and the bolt out of the i gues its called the speedo gear converter or somin. anyway its atached to the back of the tran where the cord goes in. inside there is a gear that goes in the tran that is what was broke on mine. they may have not even put the key for the gear in it. check it out.

12-03-2009, 03:50 PM	#16 (permalink)
CJMR2T Fabricator Join Date: Oct 2009 Location: Lakeland, FL Posts: 3,689 Thanks: 3 Thanked 356 Times in 337 Posts iTrader Rating: (4/100% )	No, the starter itself wont have any effect on the STA signal to the ECU... What do you mean everything checked out?? Did you actually do a voltage test at the ECU? If not, do that. Just back probe the STA signal wire at the ECU and crank the car and see if your getting 12v at the ECU while you are cranking... If no 12v, then there is a problem in the wiring somewhere. If you do get 12v at the ECU, then your problem is in the ECU itself. Like I said, its not an extremely important circuit and the worse problem you could have form it is harder starting..

12-03-2009, 07:34 PM	#17 (permalink)
BulitSpongeTWO U.S. Marine Join Date: Dec 2008 Location: North Carolina Posts: 112 Thanks: 8 Thanked 1 Time in 1 Post Blog Entries: 1 iTrader Rating: (0/0% )	will i need to crack the tranny open to replace it? cuz i read about a test for that today. and how much was that part?