Electronic vs. engine speed sensing P/S Q's
10-09-05, 08:06 PM
#1
Full Member
Thread Starter
Join Date: Aug 2003
Location: Lawrence, KS
Posts: 84
Likes: 0
Received 0 Likes
on
0 Posts
Electronic vs. engine speed sensing P/S Q's
My waterpump went out a couple weeks back and I took the opportunity to mess with some other things on the S5 GXL. One project was to remove the power steering pump and plug the lines.
But, all of the write-ups on here talk about plugging "three lines". I only have two (one goes from the bottom of the pump, around the front of the car, back to the steering gear [cooling line?]), and one from the top of the pump (pressure?).
I remember reading about how the FC had two different types of power steering, electronically controlled and engine speed sensing.
I'm assuming that the majority of the guys on here who talked about removing their P/S had the electronically controlled system, which, as you can see in the diagram, has three lines connecting at the gear.
Attached are the two diagrams of the different power steering systems from the FSM. Again, mine has two lines from the pump that connect to the steering gear (FSM calls this engine speed sensing). So, does this change the P/S removal process any, or do I just have one less line to plug?
Thanks guys.
But, all of the write-ups on here talk about plugging "three lines". I only have two (one goes from the bottom of the pump, around the front of the car, back to the steering gear [cooling line?]), and one from the top of the pump (pressure?).
I remember reading about how the FC had two different types of power steering, electronically controlled and engine speed sensing.
I'm assuming that the majority of the guys on here who talked about removing their P/S had the electronically controlled system, which, as you can see in the diagram, has three lines connecting at the gear.
Attached are the two diagrams of the different power steering systems from the FSM. Again, mine has two lines from the pump that connect to the steering gear (FSM calls this engine speed sensing). So, does this change the P/S removal process any, or do I just have one less line to plug?
Thanks guys.
10-09-05, 10:34 PM
#3
Full Member
Thread Starter
Join Date: Aug 2003
Location: Lawrence, KS
Posts: 84
Likes: 0
Received 0 Likes
on
0 Posts
Well, I believe the speed sensing setup has a 2.7 turns from lock-to-lock whereas the ECPS has 3.09. So I suppose it might, but I'm sure someone else will have a more definitive answer.
All I know is, it feels sloppy and I hate it.
All I know is, it feels sloppy and I hate it.
10-10-05, 06:43 AM
#4
Seduced by the DARK SIDE
Join Date: Apr 2001
Location: Orange Park FL (near Jax)
Posts: 7,323
Likes: 0
Received 2 Likes
on
2 Posts
Mazda made a mistake when they went to the RPM sensing setup on the S5 NA's.
You can get way ahead of the pump at high revs on autocross cones.
Just loop your 2 lines to keep the fluid clean & allow it to circulate as the rack moves.
You can get way ahead of the pump at high revs on autocross cones.
Just loop your 2 lines to keep the fluid clean & allow it to circulate as the rack moves.
10-24-05, 11:14 PM
#5
Full Member
Join Date: Aug 2004
Location: Hudson, Florida
Posts: 136
Likes: 0
Received 0 Likes
on
0 Posts
Is there any electronics that need to be messed with once the pump is removed?
I'm not sure if the p/s is relevant to my problem, but I'm trying to diagnose it. Here's my situation, I have an S5 TII and I switched the power steering rack out with an S4 unassisted rack. Now when I turn on the ignition, my instrument cluster buzzes. I though it was my add coolant sensor but I checked it and it's fine.
Is there any sensors that need to be removed or something in the dash to completely get rid of the power steering?
I'm not sure if the p/s is relevant to my problem, but I'm trying to diagnose it. Here's my situation, I have an S5 TII and I switched the power steering rack out with an S4 unassisted rack. Now when I turn on the ignition, my instrument cluster buzzes. I though it was my add coolant sensor but I checked it and it's fine.
Is there any sensors that need to be removed or something in the dash to completely get rid of the power steering?
