Rough noise/vibration upon acceleration only
12-26-17, 04:15 PM
#16
FYI, I replaced wife's then RX300 O2 sensor for around $75. It was one right in your face when you open the hood, in exhaust manifold. Each RX300 we looked at then had exactly same issue - CEL pointing at that O2 sensor.
I also did replace the EM to flex pipe seal, "doughnut" on it. It started making roaring noise, just like an exhaust with a hole in it. But absolutely nothing like vibration. Was PITA to do but I did it.
I also did replace the EM to flex pipe seal, "doughnut" on it. It started making roaring noise, just like an exhaust with a hole in it. But absolutely nothing like vibration. Was PITA to do but I did it.
12-26-17, 04:20 PM
#17
So it’s a really rough feeling, vibration, droning that you both hear and feel upon accelerating. You can feel it through the whole front of the vehicle, and in the pedal. Initially I noticed it around 40 and above, but as it got worse it was bad at all speeds, including taking off from a complete stop.
Sorry. It awfully sounds like bad engine mounts. Yes, I know. You got them replaced. Never had O2 do anything like this. Something is way out of balance in your power train.
Was timing belt ever done, btw?
Sorry. It awfully sounds like bad engine mounts. Yes, I know. You got them replaced. Never had O2 do anything like this. Something is way out of balance in your power train.
Was timing belt ever done, btw?
12-27-17, 12:05 PM
#18
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So it’s a really rough feeling, vibration, droning that you both hear and feel upon accelerating. You can feel it through the whole front of the vehicle, and in the pedal. Initially I noticed it around 40 and above, but as it got worse it was bad at all speeds, including taking off from a complete stop.
Sorry. It awfully sounds like bad engine mounts. Yes, I know. You got them replaced. Never had O2 do anything like this. Something is way out of balance in your power train.
Was timing belt ever done, btw?
Sorry. It awfully sounds like bad engine mounts. Yes, I know. You got them replaced. Never had O2 do anything like this. Something is way out of balance in your power train.
Was timing belt ever done, btw?
I just started the rx and let it run for about ten minutes, then drove it a few miles, and today I had absolutely no vibrations. So this must just be the oxygen sensor right? It’s certainly not the body mounts or anything serious in the engine as the vibration would not just go away in that case. So maybe I just got some unusual symptoms from a bad o2 sensor?
12-28-17, 10:28 AM
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Well, I still have to figure out what happened cause I can’t break down in the middle of winter up in the mountains. And we are thinking about driving the rx half way across the country to visit family in a few weeks, so I need it to be dependable.If it’s an o2 sensor I’m sure I will continue to have problems with it. Is there a way for me to figure out which sensor it is?
12-28-17, 05:01 PM
#21
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You have to wait for CEL [pending or activated] for try doing live monitoring. With live monitoring, you must have enough know how to interpret the numbers.
Flashing CEL is something that needs immediate attention.
Going into limp mode is no fun though.
Salim
Flashing CEL is something that needs immediate attention.
Going into limp mode is no fun though.
Salim
01-04-18, 01:59 PM
#22
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Well, I still have to figure out what happened cause I can’t break down in the middle of winter up in the mountains. And we are thinking about driving the rx half way across the country to visit family in a few weeks, so I need it to be dependable.If it’s an o2 sensor I’m sure I will continue to have problems with it. Is there a way for me to figure out which sensor it is?
My car ran like crap and eventually went into limp mode. Occassionally is would "miraculously" run fine for a while when the valve un-stuck, then return to its ill behavior. I replaced all O2 sensors, MAF sensor and still had problem. Mine was also throwing codes that the spark plug coil(s) were bad. I would swap them around and get the same error after resetting so I know that was BS. In the end it was all solved with $175 and two new OCVs.
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