idle issue. I'm clueless video attached

ForcedTorque

ForcedTorque

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Jul 11, 2005
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You left out the ground on the tranny mount. Is that ground in place?

And, I just read all 7 pages and never heard mention of ever driving the car. Is it possible you just need to drive the car and let the ECU learn an idle? Has this been done? It sounds like the ECU has been reset several times during this. Have you also checked your main EFI relay?
 
dumbo

dumbo

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Jul 16, 2008
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Yah I wouldn't think it would run but I dont know. Maybe jetjock knows. This is beyond me now...

So if you reset you ecu. and dont touch the gas you just get the code 11 right?
 
7thousandpiecesMGTE

7thousandpiecesMGTE

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Apr 9, 2007
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ForcedTorque;1254638 said:
You left out the ground on the tranny mount. Is that ground in place?

And, I just read all 7 pages and never heard mention of ever driving the car. Is it possible you just need to drive the car and let the ECU learn an idle? Has this been done? It sounds like the ECU has been reset several times during this. Have you also checked your main EFI relay?
Click to expand...

I was thinking this very thing.... as long as its driveable i think you should give it a shot and see if the ECU calms down your idle after a few drives.
 
Q

queenskid926

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dumbo;1254639 said:
Yah I wouldn't think it would run but I dont know. Maybe jetjock knows. This is beyond me now...

So if you reset you ecu. and dont touch the gas you just get the code 11 right?
Click to expand...

yes,


and no i haven't drove the car yet lol due to the crazy idling issue.

but now sense it seems to be random and it runs fine some times i will 2moro nite and see if that helps.

But yes +b and b all checked out and was withing spec but batt did not. I was thinking of running a wire straight from the battery and splicing it into the wire thats runs into the ecu to give batt voltage and that should get rid of the code 11 and give batt voltage.



Some other side notes, This harness or ecu, does have some other issues that i know is either with the harness or ecu.

I have used the same ecu and harness be4 on my old supra and once the swap the car would not start by key and the heat did not work. Wen i did the swap into this car, everything was perfect with the non turbo but as soon as i put this motor in, the same issues arose with the car not starting using the car and no heat and having to bypass the heater vsv for heat.

Maybe all of this is related with the code 11 or an issue with the wire harness?
 
Q

queenskid926

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jetjock;1254646 said:
Jetjock knows but no way he's gonna get sucked into this again. I will say one thing though: all this stuff about resetting the ECU to fix problems needs to die...
Click to expand...

jetjock bro i need help just tell me what to do.

should i run a wire from the battery to the batt wire that goes to the ecu and then recheck for voltage ?
 
Q

queenskid926

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jetjock;1254646 said:
Jetjock knows but no way he's gonna get sucked into this again. I will say one thing though: all this stuff about resetting the ECU to fix problems needs to die...
Click to expand...

ight i did some searching hrs of it and came across an old post from jetjock.

" BATT has power at all times. The ECU needs this power (called "keep alive") to prevent the loss of data stored in volatile memory. DTCs, idle and fuel trim learned values are examples.

Anyway, when the ignition switch is turned on battery voltage is applied to ECU terminal IGSW. In response ECU terminal M-Rel supplies battery voltage to the coil of the EFI Main Relay. The Main Relay then closes and supplies battery voltage to ECU terminals +B and +B1. Power to +B and + B1 "wakes up" the ECU "

so running a wire from the battey to the batt wire on the ecu should fix not haven voltage at batt? Ill try it in the morning,

Dam I'm learing so much about the 7m
 
dumbo

dumbo

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queenskid926;1254706 said:
ight i did some searching hrs of it and came across an old post from jetjock.

" BATT has power at all times. The ECU needs this power (called "keep alive") to prevent the loss of data stored in volatile memory. DTCs, idle and fuel trim learned values are examples.

Anyway, when the ignition switch is turned on battery voltage is applied to ECU terminal IGSW. In response ECU terminal M-Rel supplies battery voltage to the coil of the EFI Main Relay. The Main Relay then closes and supplies battery voltage to ECU terminals +B and +B1. Power to +B and + B1 "wakes up" the ECU "

so running a wire from the battey to the batt wire on the ecu should fix not haven voltage at batt? Ill try it in the morning,
Click to expand...


I would give it a try.


jetjock-I just thought you might share with him. But he found you in another way haha. Will a code 11 allow the car to start still? Could it be causeing this issue, or could it be hiding the issue thats causeing this erratic idle?
Dam I'm learing so much about the 7m
 
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D

Dr Chill

4 hungry Supras
Nov 27, 2007
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ForcedTorque;1254656 said:
First.....A crap harness will give you fits! It doesn't matter how many times you band aid it, it's still a crap harness.

Also, the engine harness has nothing to do with your heat AFAIK.
Click to expand...


yip, No matter how much mustard you put on a shit sandwich .... Its still a shit sandwhch ....:sarcasm:

I hope ya figure this out queenskid
 
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queenskid926

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dumbo;1254905 said:
I would give it a shot man. See if it fixes your prob.
Click to expand...

thanks Thats what i plan to do just to see, From this diagram it seems that
the wire for batt runs after the efi fuse.

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/FI/FI_029.gif

so if it is a short it must be between the wiring from behind the efi fuse to the ecu.

but about to go start doing some work soon, will give you all an update
 
wolf31685

wolf31685

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lol yo man i already told you wat to do wit that 7m im not gonna say it on here cuz itll start a war but i told you but in any case you need to get that bitch runnin i'm tired of being the only supra is the crew
 
dumbo

dumbo

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wolf31685;1255030 said:
lol yo man i already told you wat to do wit that 7m im not gonna say it on here cuz itll start a war but i told you but in any case you need to get that bitch runnin i'm tired of being the only supra is the crew
Click to expand...

I know your not implying to loose half a litre of displacement;)haha
 
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