Replaced OCV, now oil light comes on - Toyota Nation Forum : Toyota Car and Truck Forums

Avalon 2nd Generation (2000-2004) Specific discussion of the second generation Toyota Avalon

 
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post #1 of 9 Old 02-17-2017, 12:12 PM Thread Starter
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Replaced OCV, now oil light comes on

2000 Avalon - driven about 200 miles with bad oil control valve (yes, "check engine" was ignored -blush). Oil light came on, that led to code check which led to replacement of both oil control valves. Now car has very high idle when cold (all vacuum lines checked and secured) and oil light comes on intermittently after engine warms up. There is also a whine sound underneath timing cover. Otherwise car runs fine. New oil sender didn't fix light. Timing belt changed about 50,000 miles ago. Any suggestions would be greatly appreciated!!
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post #2 of 9 Old 02-17-2017, 03:07 PM
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Think you have to verify oil pressure.
Oil pressure light came on after OCVs were changed or was intermittent before?
OCVs were bad electrically (solenoid coil open?)
New valves fixed error codes?
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post #3 of 9 Old 02-17-2017, 03:41 PM Thread Starter
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Oil light came on before OCV were fixed - that's what prompted me to stop ignoring the "check engine" light. Code came back as bad OCV on rear bank, but I replaced both as long as I was at it, and car has 240k on it. Cleared code - hasn't reappeared yet, but haven't run engine much because of intermittent oil light warning. Didn't witness this part, but mechanic said he checked the oil pressure and it was OK, which is why sender was replaced.
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post #4 of 9 Old 02-17-2017, 04:45 PM
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If oil pressure good and sensor good not much left but the connector/circuit.
If mechanic replaced the sender to fix the oil light coming on when pressure is good then he needs to verify that connector/circuit is good.
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post #5 of 9 Old 02-17-2017, 05:40 PM Thread Starter
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Very much appreciate the feedback!
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post #6 of 9 Old 02-17-2017, 07:14 PM
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I wonder if the int. oil light is due to clumps of sludge or something else in the oil pan partially blocking the intake?
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post #7 of 9 Old 02-18-2017, 11:19 AM Thread Starter
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That is a good suggestion. I will drop the pan and take a look. Many thanks
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post #8 of 9 Old 02-18-2017, 02:31 PM
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and make sure no oil on the Ground
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post #9 of 9 Old 02-20-2017, 06:35 AM Thread Starter
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Turns out that in spite of regular (3 - 4k) oil changes in the last 100k (that's how long I've had it) using only synthetic Castrol, it was sludge. I knew the previous owner. Wonderful person, but I warned him when he still owned the car that it looked as though the oil changes he thought were being done by the "quickie" place in actuality were not. Now I have even more evidence. Also, I think that attempts to get a stuck OCV valve out didn't help, as I used some sprays and grease on the tap that finally got it out (blush). Thanks again.
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