Question about 2003 Toyota Avalon

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Check engine light just came on. Oil ok. could it be caused by a dirty filter?

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The check engine light is triggered by trouble codes which means something is wrong with the emmissions systen, transmission, motor sensors etc. A dirty oil filter will not trigger a code. You need to scan the car with an OBDII scanner to get the codes. Once oyu have the codes post them here and we can help you. If you don't have a scanner you can take the car to your local auto parts store, they'll scan for free and give you the codes.

Posted on Jul 03, 2010

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make sure that your oil level is correct. you can check it by removing your dip stick.

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I have an 08 nissan sentra. Yesterday, the gas attendant told me the oil was dirty and needed changing. He added one litre. Today, I went through the car wash and shortly afterwards, the check engine...


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After i filled my 2004 hyundai xg350 last nite and parked for half hour then drove hime ,it stalled ,but rstrated right away,but kind of jerked a little bit, when applying gas. after that i drove home...


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I hope this helps you.

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Loses oil pressure after warming up and coming to idle lite go out after rpms pick back up


Have you checked the engine dipstick to ensure that the oil level is correct? A very low oil level will cause the light to come on. Top up oil if necessary. If oil level is OK, then it is possible that the warning light pressure switch which is screwed into the engine oil pressure system is faulty and setting off light and needs replacing. There could even be oil leaking out of the switch. The switch is usually located near the oil filter and will have a wire connected to it.
If the oil constantly needs topping up you either have a bad leak or the piston rings are worn and not operating correctly. If the leak is bad, then there will be oil puddles under the engine after it has been stopped for a while. If it is a ring problem, then there will be grey oil smoke out of the exhaust while driving.
Worst case is that it could also mean badly worn engine bearings. It is unlikely to be the oil pump as these hardly ever fail.
Worst case is that it could also mean badly worn engine bearings. It is unlikely to be the oil pump as these hardly ever fail.
If the engine has not been serviced regularly with oil and filter changes, the oil can become very black, dirty and sludgy and cause restrictions in the lubrication system such as sludge blocking the gauze on the inlet to the oil pump and build up in the oil galleries. Poor oil flow from the pump will cause low oil pressure and continuing to run vehicle in this state will drastically shorten engine life.
If this is the case, then run some flushing oil product (ie. Wynns or Nulon or other reputable brand) in the engine, following the instructions on the container, and then drain and refill oil and change oil filter. You may have to repeat this process in a couple of months if the oil is particularly dirty.

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THESE ARE SOME OF THE THINGS THAT COULD BE CAUSING IT.

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Oil light comes on


this is an oil pressure light, most likely the sending unit for the gauge is defective,but I do recommened a shop hook up a oil press test gauge and verify u do't really have low oil pressure, then if that tests ok replace the sending unit on the engine.

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