What could be causing my Camry to idle so roughly?
What is your question?
While it isn't often, my 2005 Camry LE (4 cyl, 2.4 L) with 179k miles sometimes idles very roughly, dropping down to around 400rpm or lower. It will sometimes try to correct itself but fail to do so. On some occasions it's completely stalled out the motor and I have to re-start the vehicle.
We have a HUM tracker in the OBD2 port and whenever the car stalled out it gave either an alternator error or emissions error, but we doubt this is the case seeing as the alternator is brand new and we can't see how emissions would play a part in a rough idle. The car has been taken to a very much trusted mechanic and they couldn't figure it out either. Any opinions or suggestions would be extremely appreciated. Thanks!
What makes this problem better or worse?
Unknown, Can be from a cold start or after running for two hours and up to temp.
How long has your 2005 Toyota Camry had this problem?
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