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2 Posts
Alright guys, first off, I own and operate an independent repair shop and have worked on several rangers. I have found over the years in the arena of polaris, the enthusiasts, such as many members here, have more expertise than alot of so called dealer techs that I would consider parts changers. So I want to post the same question I have asked several techs with no solid answer.
Does anyone know on the newer style of throttle bodies with an IAC (idle air control) what the wide open TPS voltage should be? My concern is that the ECM voltage to the TPS is 3.3, which is not a spec anywhere in the OE service manual. I know .700 is the idle setting with a 5v source via the special harness, but .460 is the digital wrench answer, which leads me to believe a multimeter would read 0.460 as well in lieu of 3.3v I have as supply straight from the ECM.
The issue I am chasing was the machine would be stupid rich at idle, so much so the exhaust would burn your eyes. Other than that it ran great with no codes at all. Upon checking TPS voltage with my multimeter it was .450 right out of the gate, but clearly the IAC was opened slightly, you can really hear it with no air filter in the box. It seems to open up around this TPS voltage.
I did attempt to adjust the idle stop (I know this is taboo) because with the TPS set higher it smoothed out nicely, but idled at 1600RPM's. I really suspect I have an ECM problem, but just realized that's a dealer only repair as the new one has to be flashed.
I'd love to hear back from some of the avid tuners on here, i am sure I'm not the only one that has questioned these specs that seem so elusive.
Paul
Does anyone know on the newer style of throttle bodies with an IAC (idle air control) what the wide open TPS voltage should be? My concern is that the ECM voltage to the TPS is 3.3, which is not a spec anywhere in the OE service manual. I know .700 is the idle setting with a 5v source via the special harness, but .460 is the digital wrench answer, which leads me to believe a multimeter would read 0.460 as well in lieu of 3.3v I have as supply straight from the ECM.
The issue I am chasing was the machine would be stupid rich at idle, so much so the exhaust would burn your eyes. Other than that it ran great with no codes at all. Upon checking TPS voltage with my multimeter it was .450 right out of the gate, but clearly the IAC was opened slightly, you can really hear it with no air filter in the box. It seems to open up around this TPS voltage.
I did attempt to adjust the idle stop (I know this is taboo) because with the TPS set higher it smoothed out nicely, but idled at 1600RPM's. I really suspect I have an ECM problem, but just realized that's a dealer only repair as the new one has to be flashed.
I'd love to hear back from some of the avid tuners on here, i am sure I'm not the only one that has questioned these specs that seem so elusive.
Paul