Has anyone tried to clean the MAP sensor on a T-Bird? - Page 2 - Triumph Forum: Triumph Rat Motorcycle Forums
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post #11 of 17 (permalink) Old 03-25-2019, 11:45 PM
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Originally Posted by sefri View Post
Please note my original question was about cleaning the MAP Sensor not the K&N filter.
Short attention spans around here.

MAP and MAF sensors are completely different. MAP is a pressure sensor and MAF is an airflow sensor; they don't work the same way so I wouldn't assume MAF cleaner would be appropriate for a MAP sensor. Instead of asking us mooks, why don't you just google "map sensor cleaning". I did and got a page full of direct hits.
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post #12 of 17 (permalink) Old 03-26-2019, 01:37 PM
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Originally Posted by joey1970 View Post
You can use whatever logic you think justifies your theory, but the fact is, that you are supposed to spray the exterior of the filter. If you want to continue doing it your way.. then why bother asking for help in this forum. You are doing it the wrong way. This is a fact.
Please note my original question was about cleaning the MAP Sensor not the K&N filter.
Yes, you asked about cleaning the MAPs, but you also said you were trying to trace your steps to figure out what happened. Spraying the inside of the filter is the WRONG way. I don’t know if that’ll cause issue to the MAPs, but it’s definitely wrong.. no matter what logic you use to justify it.

And I agree with the last comment, spraying the inside of the filter would prob affect the MAF.. not MAP.
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post #13 of 17 (permalink) Old 04-02-2019, 03:56 AM Thread Starter
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Originally Posted by slingshot60 View Post
serfi....you talking about the temp sensor sitting under the side cover which protrudes inside the air box or the 4 MAP sensors under the tank with the hose connections?
I am asking about the MAP sensors under the fuel tank (I think there are 2 not 4).
I also believe there is no MAF sensor in the T-Bird, that's why I think the MAP sensors may have been affected.
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post #14 of 17 (permalink) Old 04-02-2019, 04:41 AM
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MAP and MAF sensors work very differently. A MAP sensor is an absolute pressure sensor, so it only has one opening towards the inside of the manifold. Theoretically it could get clogged by the air filter oil, but that would require your filter to be dripping with it. The air filter oils I know are very sticky and don't want to fling off the filter even when exposed to the typical inlet vacuum. A MAF filter can get contaminated much more easily, which is why there special MAF cleaners are made for it.

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Originally Posted by PapaSmurfMC View Post
Instead of asking us mooks, why don't you just google "map sensor cleaning". I did and got a page full of direct hits.
I agree with this, though I doubt that'll be the cause. If you're already cleaning pressure sensors though, you should clean the ambient air pressure sensor as well. Both the MAP and ambient sensor are required for the ECU to calculate the inlet manifold vacuum, so both could be at fault if that measurement is incorrect.

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post #15 of 17 (permalink) Old 04-02-2019, 10:56 PM
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Originally Posted by sefri View Post
I am asking about the MAP sensors under the fuel tank (I think there are 2 not 4).
I also believe there is no MAF sensor in the T-Bird, that's why I think the MAP sensors may have been affected.
Duh....yes I was having a senior moment 2 hoses 4 connections, but there are just 2 MAP sensors.....and I have never attempted cleaning. Got rid of the OEM connectors long ago and replaced the tubing with racing grade silicone vacuum tubing.

Air Temp Sensor...see part 20 https://www.bikebandit.com/oem-parts...6480#sch868469

Thanks for your response.
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post #16 of 17 (permalink) Old 04-02-2019, 11:47 PM
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What needs cleaning on a pressure sensor? The ones I’m familiar with are pressure transducers. You pull a vacuum on it and a voltage changes.
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post #17 of 17 (permalink) Old 06-27-2019, 12:06 AM
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Originally Posted by sefri View Post
I think I am doing the right thing spraying the inside, because the oil should go on the air intake and not the air outlet (from the filter perspective). Please see how the filter configuration is in the T-Bird.
From manifold perspective, if you spray the oil on the outside of the filter, with the strong suction from the engine, particles from the oil will probably go into the intake manifold (which is what I think may have happened to my bike).

How is it possible that for both Harley and T-bird K&N filters, you spray the outside part when one sucks air from the internal side and the other does it from the external part of the filter? Not at all logical. I even believe K&N should clarify this on their filters.
The same applies for cleaning. If you are forcing water from the inside to outside in case of the T-Bird, you are actually helping dirt particles to get stuck (because dirt particles are trapped on the internal side). Whereas in Harleys, you force water from inside to outside because dirt particles accumulate on the external part.

But if it works for you guys, then good for you.
As long as the oil soaks in consistently it doesn't matter. What matters is that you give it the time it needs to soak in. Keep in mind that the crankcase breather tube goes into the airbox so it would be more likely for oil from the crankcase to contaminate any sensors. Most people over spray the filter material anyways. The filter oil will soak in sprayed from either side then it's just a matter of patience letting it absorb into the material in an even coating. Done right there shouldn't be anything to blow out (not recommended by K&N) or wipe off. But I've only been using K&N's since the '80's so they may suggest letting your drone reoil it from a computer/phone app. LOL!! It's just a filter. Clean it - dry it- reoil it - let it soak fresh oil until there's no white or excess on the filter- reinstall it. Ride it. What if you don't have spray but the oil bottle instead? Try oiling that from the inside. There's as many way's to accomplish the mission as there are Able bodies to follow the orders.

Last edited by bothunderson; 06-27-2019 at 12:13 AM. Reason: added notes on oiling with the original bottle; let me see you reach it all the way down from the inside.
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