S5 Turbo TPS roller measurement?
10-13-15, 11:43 PM
#1
S5 Turbo TPS roller measurement?
Does anyone have a USDM S5 Turbo throttle body laying around? I need a measurement if you could..
The distance between the two TPS rollers.
See attached pictures.
My problem is that it seems the spacing is wrong on my throttle body's TPS rollers. If I bolt the TPS down, the narrow range contacts correctly, but the wide range is off set and spins the TPS as it pushes.. I'm rather dubious that that is the designed alignment..
The only things that come to mind are that the JDM throttle body is spaced different than the USDM, or that my narrow range roller is *slightly* bent - perfectly. I measured the perpendicular movement of the roller for about half its range with a dial indicator and only got about 0.001" of play.
The distance between the two TPS rollers.
See attached pictures.
My problem is that it seems the spacing is wrong on my throttle body's TPS rollers. If I bolt the TPS down, the narrow range contacts correctly, but the wide range is off set and spins the TPS as it pushes.. I'm rather dubious that that is the designed alignment..
The only things that come to mind are that the JDM throttle body is spaced different than the USDM, or that my narrow range roller is *slightly* bent - perfectly. I measured the perpendicular movement of the roller for about half its range with a dial indicator and only got about 0.001" of play.
10-16-15, 11:31 PM
#3
Which is to ask, does the plunger that rests against the circular cam/roller spin when you open and close the throttle plates?
This thread: https://www.rx7club.com/2nd-generati...alones-933234/
Seems to imply that that TPS plunger is only used for OMP, and the one actuated by the little peg [closer to the alternator] is the only one the ECU cares about. (Running a PFC BTW, so... Not sure which one it cares about?)
This thread: https://www.rx7club.com/2nd-generati...alones-933234/
Seems to imply that that TPS plunger is only used for OMP, and the one actuated by the little peg [closer to the alternator] is the only one the ECU cares about. (Running a PFC BTW, so... Not sure which one it cares about?)
10-17-15, 10:21 AM
#5
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,832
Received 2,603 Likes
on
1,847 Posts
10-21-15, 04:27 AM
#6
Thanks guys!
j9fd3s - Thanks for reminding me! I'd heard that before, but totally forgotten (someone once linked a couple of graphs of the OMP delivery for S4 vs S5)
jjwalker - Still seems weird to me, but I found another picture of it offset online, so I reinstalled a new TPS (pict attached for future reference)
Car runs fine like this, but it still seems like a strange design choice.
j9fd3s - Thanks for reminding me! I'd heard that before, but totally forgotten (someone once linked a couple of graphs of the OMP delivery for S4 vs S5)
jjwalker - Still seems weird to me, but I found another picture of it offset online, so I reinstalled a new TPS (pict attached for future reference)
Car runs fine like this, but it still seems like a strange design choice.
Thread
Thread Starter
Forum
Replies
Last Post