BROKE TPS AS USUAL... DOES IT REALLY DO ANYTHING
Thread Starter
Senior Member
Superstock
Joined: Oct 2008
Posts: 388
From: Muskego,WI
BROKE TPS AS USUAL... DOES IT REALLY DO ANYTHING
I broke my TPS as many on the forum members have... After reading centralcoaster and others posts, i gather the TPS doesnt do much... (besides detonation at higher RPM's???? and be really easy to break)
Is this true, as it is expensive from Honda
Is this true, as it is expensive from Honda
Senior Member
SuperBike
Joined: Aug 2005
Posts: 1,864
From: Fort Wayne, IN
I don't know, my experiences and those of others suggest that it's pretty darn important. The ECU uses a 3D ignition advance map in it's programming. What that means is that it varies the ignition timing based on engine rpm and also throttle opening. If your TPS is not working or not set correctly it will throw the map onto a curve that is not correct. The engine will still run, but expect less performance and some rough running.
Thread Starter
Senior Member
Superstock
Joined: Oct 2008
Posts: 388
From: Muskego,WI
i figure if Honda engineers put it there, it had to have a purpose.
I was able to slightly drill a hole on the twist part to get a good mounting surface to try to repair it. It seems to be alot stronger than original... hoping once it dries and test the reistance on it
I was able to slightly drill a hole on the twist part to get a good mounting surface to try to repair it. It seems to be alot stronger than original... hoping once it dries and test the reistance on it
Senior Member
MotoGP
Joined: May 2008
Posts: 3,452
From: San Clemente, CA
Quick test is: (key off)
1. unplug TPS connector on right side of rear carb.
2. TPS has 3 pins, one is usually 5V reference voltage, one is signal voltage and one is ground.
3. put ohmmeter leads on signal and ground terminals (it looks like they are the outside terminals).
4. as throttle is opened slowly the resistance should decrease gradually, then return to where it started when throttle is closed.
On a car I would use a voltmeter or lab scope to check the circuit live by backprobing. That is a more accurate test, but Honda says test with ohmmeter.
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ProfChaos
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Aug 5, 2011 03:57 PM
