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[yokohama]

Hello friends

I've 1999 model 2.5 v6 automatic transmission vehicle and it has heavy steering problem. I've changed steering box and steering pump 2 times and servotronic role 3 times. Speed signal exists from ABS but the problem hasn'T been solved. At the end servotronic role has been changed again tech 2 and 6-8-9 have been programmed with 11.

Now the steering wheel is heavy like works without role. Sometimes it get better but generally heavy. I need your suggestions about solution of the problem.
Is there anyone who knows the codes with Tech2 programming?

[TheBoy]

there are 6 settings - low/med/high for 2 different steering gears,

[TheBoy]

MY
 ZF Code Index
 Steering gear
 Code Index
 
1997
 01
 Minimum
 006
 

 02
 Medium
 007
 

 03
 Maximum
 008
 
2000
 01
 Minimum
 009
 

 02
 Medium
 010
 

 03
 Maximum
 011
 

[TheBoy]

MY	ZF Code Index	Steering gear	Code Index
1997	01	Minimum	006
1997	02	Medium	007
1997	03	Maximum	008
2000	01	Minimum	009
2000	02	Medium	010
2000	03	Maximum	011

[yokohama]

Thank you very much. Do you have any suggestions on how to solve the problem?

[yokohama]

Steering sometimes turns hard, sometimes turns easily.
WHAT IS THE SOLUTION???

[raywilb]

Steering sometimes turns hard, sometimes turns easily.
WHAT IS THE SOLUTION???

  have you checked the fuse ,

[Bigron]

Is it too silly to suggest that you might have a ball joint in the steering run dry?

Ron.

[Bojan]

Check your steering components. Something might siezed up (ball joints on tie-rods, central rod,  or steering idler arm).

Btw...do you have OEM idler arm? If bushing in it is replaced wirh steel sleeve, they can cause heavy steering after some time.

[Bigron]

I think there must be an echo in here.....

[Bojan]

I think there must be an echo in here.....

Sorry Ron, didn't notice your post. I'm viewing from mobile phone, and it' a bit awkward.

[Bigron]

Tee hee: not a problem, I was only teasing!   

Ron.

[Kevin Wood]

I think I would be inclined to remove the servotronic relay as a test. Steering should be a little heavy at parking speeds without it, but fine on the move. If there are still "tight spots" you then know it's a mechanical issue.

If the heaviness is RPM related (heavier at slow engine speeds) then it's likely the pump. If it's related to the position of the wheel (always tight at a particular position), then it's a tight ball joint, strut mount, idler or steering box.

I know you've changed the box and pump before. Are you certain they were good components?

If it's looking like the box, it might be worth slackening the adjusting screw on the top of the box 1/4 of a turn, and seeing if that helps, without introducing too much play.

[yokohama]

Steering box, role, pump were tested in different vehicles. It works.

[Kevin Wood]

Steering box, role, pump were tested in different vehicles. It works.

OK, so remove the servotronic box and check that the steering is consistently a little heavier than normal. If it is still tight at times, then you have a mechanical issue in the suspension somewhere.