Harley Davidson Magnetti Morelli EFI
#23
Join Date: May 2015
Location: Then Wisconsin, now North Carolina
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I am going to suggest that you read the meter wrong. I just measured a set and they were 14.8 ohms. Looks like you are off a decimal or are not reading the range correctly. Also, if you think that a resistance issue is the cause of a midrange concern, I would again aim you back to cleaning them. If you were 130 ohms off, you would not have a running bike.
If you are using a cheap harbor freight centech meter (the free of 4$ one), I would not trust it.
If you are using a cheap harbor freight centech meter (the free of 4$ one), I would not trust it.
Last edited by Ed Ramberger; 10-02-2019 at 08:14 PM.
#24
Great back and forth people. This is why I live the EVO section
Techron is great stuff.
I use it at the beginning of riding season here in MA.Its a five month lay over. And yes, I treat the with Staybil and fill with premium to the top.
Fuel related pieces are very sensitive to ethanol. Hate that crap!
Techron is great stuff.
I use it at the beginning of riding season here in MA.Its a five month lay over. And yes, I treat the with Staybil and fill with premium to the top.
Fuel related pieces are very sensitive to ethanol. Hate that crap!
#25
This is similar to what my 01 ultra classic is doing. Backfire's sometimes and breaks up in low to mid but runs strong on top. Once warm though after running hard on top it takes a few seconds for the idle to come back down. This all started almost immediately after filling up with ethanol fuel.
#27
I could use Ed Ramberger
Let me start by saying thank you to everyone who contributed to this thread. Also my bike runs like a top but my TPS readings are NOWHERE near the ranges specified here or in my factory service manual. How does that work?
2000 FLHRCI stock with slip-ons, 105,000 miles
I only took cold readings and adjusted my throttle cables so i achieved WOT. I have NOT touched my warm/cold idle screws.
This is my throttle closed. Bike cold, ISC unplugged, ignition on
This is the throttle grip wide open before i adjusted the cables
And this is after adjusting the cables to achieve actual WOT
This is the wire I'm taking readings off of. The meter ground is to the passenger peg bolt.
Like I said my bike runs like a top.. I have a big trip coming up next week so I'm not touching it because it runs great. But why would my readings be this far off without the bike having issues? Any thoughts are appreciated.
2000 FLHRCI stock with slip-ons, 105,000 miles
I only took cold readings and adjusted my throttle cables so i achieved WOT. I have NOT touched my warm/cold idle screws.
This is my throttle closed. Bike cold, ISC unplugged, ignition on
This is the throttle grip wide open before i adjusted the cables
And this is after adjusting the cables to achieve actual WOT
This is the wire I'm taking readings off of. The meter ground is to the passenger peg bolt.
Like I said my bike runs like a top.. I have a big trip coming up next week so I'm not touching it because it runs great. But why would my readings be this far off without the bike having issues? Any thoughts are appreciated.
Last edited by Lowluv72; 06-09-2022 at 09:39 PM.
#28
Join Date: May 2015
Location: Then Wisconsin, now North Carolina
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Couple things you have wrong.
1) you should be back probing 2 of the 3 wires - NOT using a chassis ground.
2) At WOT you will see nearly 5V so that measurement is hosed.
3) If you have throttle cables acting on it or idle screws (closed reading) I would suspect you should be seeing .5ish to .6ish so that measurement is hosed.
4) You should be measuring between pins 16 & 30 (the two outside wires). If your voltages are floating around, one of your connections is not on and you are getting ghost voltage readings.
1) you should be back probing 2 of the 3 wires - NOT using a chassis ground.
2) At WOT you will see nearly 5V so that measurement is hosed.
3) If you have throttle cables acting on it or idle screws (closed reading) I would suspect you should be seeing .5ish to .6ish so that measurement is hosed.
4) You should be measuring between pins 16 & 30 (the two outside wires). If your voltages are floating around, one of your connections is not on and you are getting ghost voltage readings.
#29
#30
Join Date: May 2015
Location: Then Wisconsin, now North Carolina
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Yes and you have to make sure both pins are hitting the terminals inside the connector. I use back probe pins for meters - less chance for an oops. If you had a good chassis ground you probably would have gotten a reading if the pin was hitting the terminal. Reason you shouldn't be using the chassis ground is that the ECM is the correct grounding source for this circuit.