Author Topic: What am I not understanding? (TPS) (Read 2521 times)

Chuck in Indiana · « **on:** June 17, 2018, 11:13:32 AM »

02 Stone, probing the violet and violet/black wires, mv reads 0. Tried it at the computer, mv reads 0. Moving the TPS does nothing.
Yes, we have continuity, ignition is on, everything is plugged in.
Never have seen anything like this..

John A · « **Reply #1 on:** June 17, 2018, 11:23:44 AM »

You've cooked your favorite meter ,Chuck

Chuck in Indiana · « **Reply #2 on:** June 17, 2018, 11:39:57 AM »

I don't think so..

rodekyll · « **Reply #3 on:** June 17, 2018, 11:46:42 AM »

Does the tps work?

Wildguzzi.com · « **Reply #3 on:** June 17, 2018, 11:46:42 AM »

guzzisteve · « **Reply #4 on:** June 17, 2018, 11:50:30 AM »

That means it's time for a break. Wire colors? I just go to the 2 outside wires on the plug.

Chuck in Indiana · « **Reply #5 on:** June 17, 2018, 11:56:42 AM »

Quote from: guzzisteve on June 17, 2018, 11:50:30 AM

That means it's time for a break. Wire colors? I just go to the 2 outside wires on the plug.

Yes the two outside wires. violet and violet/black..
We're taking a break as we speak.

I'm thinking probing the violet/black at the computer and ground. That should work, shouldn't it?

Quote from: rodekyll on June 17, 2018, 11:46:42 AM

Does the tps work?

He rode it here..

guzzisteve · « **Reply #6 on:** June 17, 2018, 12:09:37 PM »

Well, I still use my 2 bent up paper clips and slide them in the back. I don't like putting holes in the wires. It could be you didn't get contact.

John A · « **Reply #7 on:** June 17, 2018, 12:13:06 PM »

Try black/violet and ground although the black is ground, but maybe...
just reread, you said that

rodekyll · « **Reply #8 on:** June 17, 2018, 12:13:53 PM »

Do you have a spare meter to check against? Either the meter isn't working or you're not getting contact. Since it shows continuity on ohms, the meter probably has contact. Does the ohm value change as you roll the throttle?

Wayne Orwig · « **Reply #9 on:** June 17, 2018, 12:19:34 PM »

Measure from ground, to each of the three. Make sure you have 5 volts on one.
Maybe the sidestand switch, or engine cutoff, or such, has the ECU powered off and no power to the TPS.

Chuck in Indiana · « **Reply #10 on:** June 17, 2018, 12:21:31 PM »

Yeah, checked with a spare meter. Zero. Hooked up guzzidiag, and it said, "ignition off." I didn't realize I wasn't hearing the fuel pump run when I turned on the ignition switch.

Duh.
I *never* use the kill switch.
He always does..

Quote from: Wayne Orwig on June 17, 2018, 12:19:34 PM

Measure from ground, to each of the three. Make sure you have 5 volts on one.
Maybe the sidestand switch, or engine cutoff, or such, has the ECU powered off and no power to the TPS.

Thanks, Wayne.. I was typing as you posted. I'm *pretty sure* we'll get it now.

Lannis · « **Reply #11 on:** June 17, 2018, 12:23:16 PM »

Quote from: Wayne Orwig on June 17, 2018, 12:19:34 PM

Measure from ground, to each of the three. Make sure you have 5 volts on one.
Maybe the sidestand switch, or engine cutoff, or such, has the ECU powered off and no power to the TPS.

The "Guzzi Whisperer" figures out another one from 500 miles away!

Lannis

rodekyll · « **Reply #12 on:** June 17, 2018, 12:34:17 PM »

Good call.

Chuck in Indiana · « **Reply #13 on:** June 17, 2018, 01:59:51 PM »

He's headed down the road, and knows how to do it himself, now. Running sweetly, if I do say so..

John Croucher · « **Reply #14 on:** June 17, 2018, 02:42:13 PM »

You are measuring mv dc. A tps is very easy to take apart and have a look inside.

I recently hooked up the wires on mine, started the engine, turned the tps while checking the timing mark on the flywheel. The amount of advance and retard of the timing was significant. Forget the number of mv/dc versus the degree of advance/retard it changed. I wrote it down somewhere.

I use pins in the plug and alligator clips to hold the setup together.

BrotherJim · « **Reply #15 on:** June 17, 2018, 04:30:56 PM »

Good times... Thanks, Chuck!

pete roper · « **Reply #16 on:** June 17, 2018, 04:35:37 PM »

I still periodically get caught by the kill switch on 15M and RC bikes. Ain't life grand?

Chuck in Indiana · « **Reply #17 on:** June 17, 2018, 04:59:05 PM »

Quote from: pete roper on June 17, 2018, 04:35:37 PM

I still periodically get caught by the kill switch on 15M and RC bikes. Ain't life grand?

I feel better, now. Who would have thought to have the start button and the kill switch be the same thing?

Note to self. *listen* for the fuel pump when turning on the ignition..

Lannis · « **Reply #18 on:** June 17, 2018, 05:04:40 PM »

Quote from: Chuck in Indiana on June 17, 2018, 04:59:05 PM

I feel better, now. Who would have thought to have the start button and the kill switch be the same thing?

That's not a bug; that's a feature. Having the kill switch on a rocker on the other side of the start button is the greatest idea since peanut butter, or sliced bread.

The number of humanity's manhours wasted from whenever the Honda 250 got a kill switch, until Guzzi invented the combined switch, probably can't be expressed without exponential notation.

Your couple of hours is just part of the price that has to be paid for the benefit of the entire universe of motorcycle troubleshooters .....

Lannis

Chuck in Indiana · « **Reply #19 on:** June 17, 2018, 06:38:39 PM »

Quote from: Lannis on June 17, 2018, 05:04:40 PM

That's not a bug; that's a feature. Having the kill switch on a rocker on the other side of the start button is the greatest idea since peanut butter, or sliced bread.

The number of humanity's manhours wasted from whenever the Honda 250 got a kill switch, until Guzzi invented the combined switch, probably can't be expressed without exponential notation.

Your couple of hours is just part of the price that has to be paid for the benefit of the entire universe of motorcycle troubleshooters .....

Lannis

Well, I feel even better, now.

stubbie · « **Reply #20 on:** June 17, 2018, 07:01:33 PM »

Couple of months back I drove into work and noticed an employee with his 250 Honda cruiser in bits in the carpark, so I wondered over to see if I could help. He said for the life of me I've spent well over an hour but I can't get this blxxxy bike started. I don't know what is wrong. It was running fine this morning. Ahem I said, flicking the kill switch off, try it now.

Chuck in Indiana · « **Reply #21 on:** June 17, 2018, 07:07:49 PM »

Another stab to the heart.

Oh, well I deserved it.. I'll man up and take it.

guzzisteve · « **Reply #22 on:** June 17, 2018, 07:42:37 PM »

It's not your fault, you don't use it. AND you didn't turn it off w/you rode in on it.
You should have went flying instead, that's what we did on fathers day.

BrotherJim · « **Reply #23 on:** June 18, 2018, 09:31:54 AM »

Agreed, Steve. Not your fault, Chuck. I am a user of the kill switch, and you are not. Regardless of this happy little accident, I learnt some things about my Guzzi because you took the time to show me. BTW, I saw the Aluminum Overcast again this morning.

Chuck in Indiana · « **Reply #24 on:** June 18, 2018, 11:22:09 AM »

You have a really nice bike, there, Jim..

Put down the pressure washer, pay attention to what I told you about the clutch, put in the new relays, a little DeOxit.. and it will outlast you.

stubbie · « **Reply #25 on:** June 18, 2018, 07:08:50 PM »

I'm sure we've all done it at some point. I know I have. My riding people used to do it as a joke.

rodekyll · « **Reply #26 on:** June 18, 2018, 08:43:04 PM »

TPS= The Power Switch.

BrotherJim · « **Reply #27 on:** June 19, 2018, 08:29:43 AM »

The clutch thing is a PITA, Chuck, but I'm trying. Got the throttle body boot slipped back where it belongs... all of the clamps were loose on both sides. New shift linkage w/heim joints on order from Harper's, and I'll get to the relays and fuses this week with a little DeOxit. This thing was greased up like an old rifle packed in Cosmoline when I got it. Shouldn't need anymore deep cleaning!

rodekyll · « **Reply #28 on:** June 19, 2018, 10:52:12 AM »

Be careful tightening those bands. They aren't supposed to make the seal. The rubber bits are tongue in groove. They do the sealing. The camps keep them from blowing off in a backfire. Yes, you'll leak air if they are too loose, but they'll split the rubbers if they're too tight.

BrotherJim · « **Reply #29 on:** June 19, 2018, 12:09:44 PM »

Thanks, Rodekyll. I will back off a little on those bands.

News:

Author Topic: What am I not understanding? (TPS) (Read 2521 times)

Wildguzzi.com

pete roper