Hi! A few months ago I sold my V8 4Runner and bought a 2007 LX470 with 87k miles. It had a roar that corresponded to engine rpm. Usually this would be the result of a locked up fan clutch. Last week I got a new OEM fan clutch (could have gotten and Aisin from Amazon I know) and installed it. I thought for sure that the roaring would be gone, but it didn’t! Still sounds like a large dump truck rolling down the street! The fan did not and does not wobble or have chirping or clicking sounds like bearing failures would cause. During removal, one of the four bolts did come off as I was fighting to get that nut off. But everything installed back right and fine. Any thoughts?
Also I understand a locked up fan clutch would cause dropped mpg and engine power. I get a pathetic 12 mpg. But would it affect shifting too?? The transmission seems to not like going into overdrive, especially climbs or sometimes even on flats. It would maintain high rpm when I expect it to get to a higher gear and drop rpm. Sometimes it feels like the gas pedal doesn’t want to go down and the engine rpm struggles to climb and deliver torque. I’d owned the 4Runner with the same engine and transmission for 14 years and driven plenty of mountain roads. It behaved completely differently - a lot smoother. I should probably post about the transmission in a separate thread. But wonder whether the fan clutch could cause the feeling of transmission problem?
Thanks all. Insights will be appreciated
Also I understand a locked up fan clutch would cause dropped mpg and engine power. I get a pathetic 12 mpg. But would it affect shifting too?? The transmission seems to not like going into overdrive, especially climbs or sometimes even on flats. It would maintain high rpm when I expect it to get to a higher gear and drop rpm. Sometimes it feels like the gas pedal doesn’t want to go down and the engine rpm struggles to climb and deliver torque. I’d owned the 4Runner with the same engine and transmission for 14 years and driven plenty of mountain roads. It behaved completely differently - a lot smoother. I should probably post about the transmission in a separate thread. But wonder whether the fan clutch could cause the feeling of transmission problem?
Thanks all. Insights will be appreciated