R1150RT TPS Setting

[bpittarelli]

Greetings everyone!

I've been lurking on the board since July when I bought my bike trying to learn as much as I can. This board has really helped me and the technical information available is amazing!

The bike is a 2002 R1150RT with 45,000 miles and needed a little attention. I had all the tupperware off and replaced the front and rear shocks, adjusted the valves, replaced the clutch slave cylinder and the left cam chain tensioner.

I was in the process of replacing the cam chain tensioner when I made the mistake of removing the two bolts that hold the TPS to the throttle body. When I realized my mistake I immediately reinstalled the two bolts but I don't know if the TPS moved while they were out.

Do I need to re-set the TPS? Everything I've read regarding the TPS setting to "zero" is for the older R1100 bikes but is the procedure the same for my 2002?

Thanks in advance!

Ben

[bikerfish1100]

if the TPS moved, i would want to accurately reset it. Procedure is here (and is same for 1150 motor as for the 1100) -http://www.ibmwr.org/r-tech/oilheads/index.shtml

[bpittarelli]

Thanks!

I thought they were going to be the same but I wanted to get confirmation before I re-zero'd and set the value again.

[bpittarelli]

I still need help!

Last night I hooked up my volt meter to the TPS and couldn't get a stable reading? I used a small gauge wire tucked into the contact for the red/white wire for my positive lead and tried multiple points on the bike for a ground without success. When I hooked the ground to the battery I got a .002 reading. If I scratched the ground lead along the seam in the exhaust I could get it to go up to .400 but the reading was random and quickly dropped to zero with no value staying steady for more than a fraction of a second.

I tried another volt meter to see if my el-cheapo unit was to blame and got identical results with my other unit. Yes, the side stand is up. I never zero'd it since I loosened the TPS and was hoping to put it back into the previous factory position for now until I do the TBS and get it running.

I'm sure I'm missing something simple here but why can't I get an accurate reading? I tried using a sewing needle into the wire as well with the same result so there's got to be a reason why my grounding point isn't working. The connector is solidily on the TPS and the battery fully charged.

Any suggestions are appreciated!

Ben:banghead

[bmwmick]

Ben,
Did you put your meter between pins 1 and 4? That is the most reliable ground for that circuit.
Was the Ignition set to Run with the engine stopped?

I've never tried to measure a Motronic 2.4 TPS. I always thought you just centered it on the slots, remove the battery lead for 30 seconds, reattach the battery lead and then do the TPS 'learn' procedure. Ignition set to Run, engine off, open/close throttle 2 or 3 times to full throttle (WFO) ane then switch the ignition off. Did that procedure not work for you?

Mick

[bpittarelli]

I put the red lead from the DVM on the red/white wire and the black lead on just about every piece of metal on my bike including the negative battery terminal.

From what I read, the motronic learning is based on the parameters you set with the TPS. The factory setting on my bike looks like it's canted slightly off center if that makes any sense. If you drew a horizontal line across the bolts it would be a couple of degrees clockwise. Of course that's assuming I got it close to what it was after I realized I screwed up :banghead :banghead :banghead :banghead

I haven't done the learning mode yet but really want to figure out why I can't get a good reading. Are you sure the pin #1 is ground? I'm willing to try that at this point.

[bmwmick]

Are you sure the pin #1 is ground? I'm willing to try that at this point.


I don't know where you are getting your facts(?) but pin #1 is + and pin #4 is -

I can actually read wiring diagrams. :)

[bpittarelli]

YAHOOOOO!!:dance :dance

The ignition key turned on and the "kill switch" in the run position!:thumb

It's always something simple that I overlook but that kill switch was the ticket.

The voltage reading was .389 and consistantly returned to that after several WOT twists.

Thanks for the help!

Now....on to the TBS!:wave