Have a problem that i cant solve

[Alex-svx]

I have now change the ECU to uk car.
And i have repalace both knok sensors on the car. When i read the ecu its say no problem just normal chenck engine flash, when i try to read it.
This is aftrer a fail jump start in the winter and the fuse line blow. =(

So now i really dont know where to start to solve that engine cut when driving.(turning)

If i drive stragth forward the car go like it should. Higway drving is also not a problem,
But if i try to turn around a corner the engine gomes and go. Not died but its feels like all the power is gone in one sec and gome in the next.
Also if you drive strage a head and turn the stering wheel left and rigth i can feal power get low and strong.

Some one can help me?

[Conn SVX]

Mine acted That way when my MAF was broke. just saying a guess. The guy checked it by running the motor and tapping on the MAF with a small hammer or the handle of his screwdriver. Could also be a wire being strained or pulled. Does it do it in both left and right turns? No expert just passing on what happened. To mine.

[redlightningsvx]

check all the wires in the wheel well for breaks/cuts

[Alex-svx]

Originally Posted by Conn SVX

Mine acted That way when my MAF was broke. just saying a guess. The guy checked it by running the motor and tapping on the MAF with a small hammer or the handle of his screwdriver. Could also be a wire being strained or pulled. Does it do it in both left and right turns? No expert just passing on what happened. To mine.

Its happen in both turns. I should look at the car on Tuestday.
But i should try the maff also.

[Alex-svx]

Originally Posted by redlightningsvx

check all the wires in the wheel well for breaks/cuts

I have check the winring where the sterring rods are. And all here look good.
But i should take a look in the wheel well also. Thanks for the tips.

[oab_au]

Originally Posted by Alex-svx

If i drive stragth forward the car go like it should. Higway drving is also not a problem,
But if i try to turn around a corner the engine gomes and go. Not died but its feels like all the power is gone in one sec and gome in the next.
Also if you drive strage a head and turn the stering wheel left and rigth i can feal power get low and strong.

Some one can help me?

Alex this going on and off, really sounds like the Torque Control is turning on and off.
Have a look under the dash, at the wires going to the ECU, there may be one that is turning the TC on and off, when you move sidewards.

Harvey.

[Alex-svx]

Originally Posted by oab_au

Alex this going on and off, really sounds like the Torque Control is turning on and off.
Have a look under the dash, at the wires going to the ECU, there may be one that is turning the TC on and off, when you move sidewards.

Harvey.

Ok. I was planing to look at my car today, but i was helping a friend to move his car. but i Will take a look under the dash thanks alot

[Alex-svx]

I have take a look on my car today.
And i cant find anny lose wiring or something that the wheel go in to.
Also try to check this when the wheels are in the air and nothing happen car is running grate. And not cut. Only when the wheels are on the ground.

But i have now find out a way to get the error code on my car.
If i steer the car all the way to the left or right when i not driving (engine running).
the check engine light comes on. And goes off when i dont steer.

The code i get is 38 Engine torque control Wiring harness between ECU and TCU is in short circuit.

After i have check this and should drive the car to the garage (30min away) the enigne light stays on, and when i have drive a little the Antilock brake light comes on.

[oab_au]

Originally Posted by Alex-svx

I have take a look on my car today.
And i cant find anny lose wiring or something that the wheel go in to.
Also try to check this when the wheels are in the air and nothing happen car is running grate. And not cut. Only when the wheels are on the ground.

But i have now find out a way to get the error code on my car.
If i steer the car all the way to the left or right when i not driving (engine running).
the check engine light comes on. And goes off when i dont steer.

The code i get is 38 Engine torque control Wiring harness between ECU and TCU is in short circuit.

After i have check this and should drive the car to the garage (30min away) the enigne light stays on, and when i have drive a little the Antilock brake light comes on.

The Torque Control can only be turned on by a ground on the wire that goes from the TCU to the ECU.


Did you add this jumper wire to your ECU? if so it could be grounding the Torque Control from the Power Steering wire.
If you did this Jumper wire mod, just remove it and make sure that there is no wire connected to the Torque Control pin on the ECU.

Harvey.

[Alex-svx]

Originally Posted by oab_au

The Torque Control can only be turned on by a ground on the wire that goes from the TCU to the ECU.


Did you add this jumper wire to your ECU? if so it could be grounding the Torque Control from the Power Steering wire.
If you did this Jumper wire mod, just remove it and make sure that there is no wire connected to the Torque Control pin on the ECU.

Harvey.

Yes i have done this jump wire. I will try to remove this later today.
Thanks.

[Alex-svx]

I have finaly find the problem. I try to disconect the jump wirer (ecu) but then i cant delete the error code. So this are replaced.
But i the sensor that goes in to the powerstering oil pan. (dont know the name) i disconect this and the car goes fine.

But the power sterring rack are not so find. hehe So i cant drive whit it.

Here are some photos of the wiring i mean. Must i have the hole unit or just the senors?




Thanks.

[oab_au]

Originally Posted by Alex-svx

I have finaly find the problem. I try to disconect the jump wirer (ecu) but then i cant delete the error code. So this are replaced.
But i the sensor that goes in to the powerstering oil pan. (dont know the name) i disconect this and the car goes fine.

But the power sterring rack are not so find. hehe So i cant drive whit it.

Here are some photos of the wiring i mean. Must i have the hole unit or just the senors?

Thanks.

I don't think that pressure switch is faulty, it is doing what it should.

When you turn the steering, and pressure is developed in that line, that switch on the pump, puts a ground on the green/white wire to the ECU, to signal, that the power steering is loaded, so that engine rpms can increase to handle the load.

The jumper wire is connected to the green/white wire, that the pressure switch is grounding. So when you turn the steering, the green/white wire is grounded, and the jumper wire is also grounding the Torque Control wire.

I don't know what you mean by "but then i cant delete the error code".
I am sure that if you cut the jumper wire, everything will work OK.

Harvey.

[Alex-svx]

I try to cut the jump wirer but then check engine light is on.
And if i try to remove the error code on ecu it will not go away.
Whit the two blue wirer in the Black conector. Under the kick panel.

[icingdeath88]

Originally Posted by Alex-svx

I try to cut the jump wirer but then check engine light is on.
And if i try to remove the error code on ecu it will not go away.
Whit the two blue wirer in the Black conector. Under the kick panel.

That method almost never works to clear the code, in my experience. Unplug the battery for ~1/5 hour and it ought to clear it.

[Alex-svx]

Originally Posted by oab_au

I don't think that pressure switch is faulty, it is doing what it should.

When you turn the steering, and pressure is developed in that line, that switch on the pump, puts a ground on the green/white wire to the ECU, to signal, that the power steering is loaded, so that engine rpms can increase to handle the load.

The jumper wire is connected to the green/white wire, that the pressure switch is grounding. So when you turn the steering, the green/white wire is grounded, and the jumper wire is also grounding the Torque Control wire.

I don't know what you mean by "but then i cant delete the error code".
I am sure that if you cut the jumper wire, everything will work OK.

Harvey.

Ok i will try to remove the jump wire again. I have disconnect the battery.

But i have drive the car last summer before i repaint the svx, and change the clutch. And then the car have now problem whit the jump wire or steering. But then i not have speedo that works. This i also have fix in this summer.

But will i have CheckEngine light if i disconnect the jump wire?