TCCS failure?
I’ve got a 2009 Ram 4x4 with the 5.7 @ 120k miles just so I don’t forget to say it. My converter is going in and out of lock up at steady throttle pretty much all the time. Fluid is clean. Hell, even shifts mostly normal. I’m thinking TCCS because it hasn’t gotten worse at all. What’s the chances that I didn’t hurt the converter? Also what would it take to do in the driveway along with a fluid and filter swap? I just can’t swing $100+ per hour labor rate.
Are you getting any codes?
I know when my truck was doing that, it was just the throttle position sensor being bad.... if I barely moved the throttle, I would get TCC bounce. Mine was a 96 though, so, I had an actual throttle cable, yours, I do believe, is fly-by-wire..... So, might be the APPS, might be TPS. Would need to plug in with a scanner, and see what they were doing, to be able to figger out which one was the culprit.
I know when my truck was doing that, it was just the throttle position sensor being bad.... if I barely moved the throttle, I would get TCC bounce. Mine was a 96 though, so, I had an actual throttle cable, yours, I do believe, is fly-by-wire..... So, might be the APPS, might be TPS. Would need to plug in with a scanner, and see what they were doing, to be able to figger out which one was the culprit.
Are you getting any codes?
I know when my truck was doing that, it was just the throttle position sensor being bad.... if I barely moved the throttle, I would get TCC bounce. Mine was a 96 though, so, I had an actual throttle cable, yours, I do believe, is fly-by-wire..... So, might be the APPS, might be TPS. Would need to plug in with a scanner, and see what they were doing, to be able to figger out which one was the culprit.
I know when my truck was doing that, it was just the throttle position sensor being bad.... if I barely moved the throttle, I would get TCC bounce. Mine was a 96 though, so, I had an actual throttle cable, yours, I do believe, is fly-by-wire..... So, might be the APPS, might be TPS. Would need to plug in with a scanner, and see what they were doing, to be able to figger out which one was the culprit.
No codes at all, which i thought was odd. I had it on a real-time data scanner and I could watch it go in and out of lockup. But I couldn’t specifically pick to watch the sensor
Last edited by coil021; Feb 21, 2022 at 06:45 PM.
May want to try and test the sensor then. Use an analog meter, digital fellers don't react fast enough. Sweep the sensor slowly, and resistance should change smoothly. If it bounces or jumps, it's bad.







