88tc problem accelerating under load
Thread Starter
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Road Warrior
Joined: Oct 2010
Posts: 1,554
Likes: 52
From: Ottawa Canada
THX for the replies, as for the mass sensor thingy, what I am talking about is the sensor that sits on top of the intake manifold , I am told It senses the vacuum in the intake and adjusts the timing accordingly, my bike is carb'd
tomorrow I plan I replacing the intake to carb seal and the accelerator pump diaphragm, I did try carb cleaner on the intakes and there was no change in RPM, last night I checked my sparkplugs and they looked new maybe a lean condition, so now thinking a carb issue , but I did rebuild the carb a couple of months ago, not sure where to go from here.
tomorrow I plan I replacing the intake to carb seal and the accelerator pump diaphragm, I did try carb cleaner on the intakes and there was no change in RPM, last night I checked my sparkplugs and they looked new maybe a lean condition, so now thinking a carb issue , but I did rebuild the carb a couple of months ago, not sure where to go from here.
No problem prior to riding in the rain? If that is the case, then I check the air filter for being soaked. Moisture is always a suspect when having electrical issues.
The sensor you are talking about is the Manifold Absolute Pressure sensor (MAP). It will set a DTC12 code when it is faulty and/or out of range.
The sensor you are talking about is the Manifold Absolute Pressure sensor (MAP). It will set a DTC12 code when it is faulty and/or out of range.
Thread Starter
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Road Warrior
Joined: Oct 2010
Posts: 1,554
Likes: 52
From: Ottawa Canada
No problem prior to riding in the rain? If that is the case, then I check the air filter for being soaked. Moisture is always a suspect when having electrical issues.
The sensor you are talking about is the Manifold Absolute Pressure sensor (MAP). It will set a DTC12 code when it is faulty and/or out of range.
The sensor you are talking about is the Manifold Absolute Pressure sensor (MAP). It will set a DTC12 code when it is faulty and/or out of range.
I have a service manual but could not find out how to retrieve the codes, all I know is it has something to do with holding the trip reset button on the speedo and ignition switch on and off or something like that
Look at the 'Sticky' How To *Hints*.....the procedure for pulling codes is there.....
Supporter
Joined: Jan 2007
Posts: 15,787
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From: along the shore of Mishigami
"The manifold absolute pressure (MAP) sensor generates the engine load signal by measuring pressure (vacuum) in the intake manifold. The engine load signal is sent to the ignition module where it is used to help select the correct timing curve. Voltage readings decrease as manifold vacuum increases." Right from the service manual. Unplug the MAP sensor and spray some water displacement on the connectors and see if that doesn't help the situation. Don't know how much a new MAP sensor costs but that could be in your future.
Thread Starter
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Road Warrior
Joined: Oct 2010
Posts: 1,554
Likes: 52
From: Ottawa Canada
"The manifold absolute pressure (MAP) sensor generates the engine load signal by measuring pressure (vacuum) in the intake manifold. The engine load signal is sent to the ignition module where it is used to help select the correct timing curve. Voltage readings decrease as manifold vacuum increases." Right from the service manual. Unplug the MAP sensor and spray some water displacement on the connectors and see if that doesn't help the situation. Don't know how much a new MAP sensor costs but that could be in your future.
Thread Starter
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Road Warrior
Joined: Oct 2010
Posts: 1,554
Likes: 52
From: Ottawa Canada
Today I dove into the carb, was going to give it another cleaning to see if that solved the lack of power I experienced, then I took out the vacuum slide and noticed the rubber diaphragm had two small holes, so off to the dealer I went, gave them 72.00 and went on my way, installed it and gave the carb another cleaning, started the bike and now she revs up real nice and my power is back and MAP sensor was good after all.
Seasoned HDF Member
Joined: Jul 2008
Posts: 9,278
Likes: 1,138
From: southeast PA
Good to see you figured it out. 
Today must have been carb day, I just rebuilt the one on my weed whacker.
Today must have been carb day, I just rebuilt the one on my weed whacker.
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Banned
Joined: Mar 2010
Posts: 5,403
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From: Southwest Florida
Glad you fixed it but to people looking for Carb (vacuum) leaks...??
Please use a small, hand held Propane Torch. Unlit, of course. It works and it doesn't turn your paint and rubber into goo
If you don't have one. Borrow one or buy one
Please use a small, hand held Propane Torch. Unlit, of course. It works and it doesn't turn your paint and rubber into goo
If you don't have one. Borrow one or buy one
