E38 740iL Power Steering

[koh_424]

When driving or turning for reverse, sometimes the steering feel very light. But sometimes it's feel heavy to turn it.Did anybody encounter this problem before?

 

[alantiong]

When driving or turning for reverse, sometimes the steering feel very light. But sometimes it's feel heavy to turn it.

Did anybody encounter this problem before?

time to flush your fluids bro. i mean flush.. not just change

 

[koh_424]

time to flush your fluids bro. i mean flush.. not just change

If flush it will the hose leak due to the age of it?

 

[alantiong]

why would it leak.. unless its time to replace hose... if its the original, its high time to change the hoses too.

 

[koh_424]

why would it leak.. unless its time to replace hose... if its the original, its high time to change the hoses too.

I just worry after flush the oil wil cause it leak.

Lets visit 'Bang John' next week & c how it's goes!

Where are you now bro?

 

[E28driver]

When driving or turning for reverse, sometimes the steering feel very light. But sometimes it's feel heavy to turn it.

Did anybody encounter this problem before?

Check your servotronic switch and / or general module.

 

[koh_424]

Check your servotronic switch and / or general module.

Will try to check it up when meet up with mech.

 

[alantiong]

Check your servotronic switch and / or general module.

a rather stupid question to ask.. what to check on module?? how to check ah?? what to see ah?? enlighten please.

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Check your servotronic switch and / or general module.

a rather stupid question to ask.. what to check on module?? how to check ah?? what to see ah?? enlighten please.

 

[E28driver]

a rather stupid question to ask.. what to check on module?? how to check ah?? what to see ah?? enlighten please.

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a rather stupid question to ask.. what to check on module?? how to check ah?? what to see ah?? enlighten please.

Alan

We all know you are the resident E38 guru lah so save the attitude.

I'm just trying to be helpful to the OP.

When I had a problem with heavy steering, it turned out that a frayed servotronic switch wire resulted in the GM111 module getting shorted. At least this is what the mech told me. One new servotronic switch and one replacement GMIII module (from chop shop) later and I had my PS back.

Cheers

 

[koh_424]

Have consult mechanic bout this matter.

He told me it may cause by the pressure valve hose which the previous owner re-thread the hose instead of change a new hose.

Next project will sort out this issue.

 

[alantiong]

bro, i think you have jumped the gun.. i was really asking a question as i have no idea what to look for when looking at a module unless there is a code..

but since you have explained frayed switch wire.. so it all make sense..

Alan

We all know you are the resident E38 guru lah so save the attitude.

I'm just trying to be helpful to the OP.

When I had a problem with heavy steering, it turned out that a frayed servotronic switch wire resulted in the GM111 module getting shorted. At least this is what the mech told me. One new servotronic switch and one replacement GMIII module (from chop shop) later and I had my PS back.

Cheers

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bro, i think you have jumped the gun.. i was really asking a question as i have no idea what to look for when looking at a module unless there is a code..

but since you have explained frayed switch wire.. so it all make sense..

Alan

We all know you are the resident E38 guru lah so save the attitude.

I'm just trying to be helpful to the OP.

When I had a problem with heavy steering, it turned out that a frayed servotronic switch wire resulted in the GM111 module getting shorted. At least this is what the mech told me. One new servotronic switch and one replacement GMIII module (from chop shop) later and I had my PS back.

Cheers

 

[E28driver]

bro, i think you have jumped the gun.. i was really asking a question as i have no idea what to look for when looking at a module unless there is a code..

but since you have explained frayed switch wire.. so it all make sense..



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bro, i think you have jumped the gun.. i was really asking a question as i have no idea what to look for when looking at a module unless there is a code..

but since you have explained frayed switch wire.. so it all make sense..

OK, my mishtake, all is good.

 

[koh_424]

Been to Bomin Auto to flush the power steering fluid.

Used 4L new oil to flush the system & clean the reservoir. Add in 1L new oil.

Result = still heavy to turn.

 

[alantiong]

did they check is servotronic solenoid ? if that unit is stuck.. then it will be heavy too

 

[koh_424]

did they check is servotronic solenoid ? if that unit is stuck.. then it will be heavy too

Nope. They didn't diagnose my ride.

Just flush the oil. And the foreman 'Seng' help look around for the any others leak.

He also suggest i take out the steering box, pump & etc to do a repair on it.

Advise?

 

[alantiong]

do check servotronic

 

[koh_424]

do check servotronic

Diagnose manage to detect it?

 

[alantiong]

see whether any power reach the unit. it may be module burnt. ask seng to call me when he check

 

[koh_424]

see whether any power reach the unit. it may be module burnt. ask seng to call me when he check

Will arrange my time to drop by Bomin again.

Thanks.

 

[koh_424]

Problem solved.

Changed steering box & servotronic switch.

Now its back to normal!