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2003 rav 4 variable timing problem

We have a 2003 rav 4 2.0 that we replaced the head gasket on.it runs fine but we have a check engine light on due to a problem with the variable valve timing.we have tripple checked the timing chain alignment an replaced the control solenoid. with our scanner switching the solenoid we dont see any timing change ?/ thank you for any suggestions

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

motor1258
  • 6674 Answers

SOURCE: OBD code 0401 (1997 Toyota Camry 4 cyl)

There is a VSV (vacuum switching valve) , usually mounted on the back side of engine block, under the intake manifold, as well as the map sensor, that can also cause that code if one or the other is faulty. It takes some pretty detailed troubleshooting to confirm this in some cases, so if that's not in your line of work, you may have to have it properly diagnosed, or take a 50/50 shot at which one first.

Posted on Jan 24, 2009

Dr-Custom
  • 216 Answers

SOURCE: engine check light read p0171 and p0420, noticed a leak of engine oil on cylinder 2 area of head gasket when checking the sparks plug, is that the cause?

P0171 code is described as: lean condition bank 1, oxy sensor 1. If your vehicle is a 4 cylinder, which I believe it is.. you have got a lean air/fuel mixture being found by the ecm(computer).This can be caused by several things. The first of which is a possible vacuum leak at or near the intake manifold. This can also be caused by a MAF(Mass Air Flow) sensor problem or even by something as simple as a clogged fuel filter. This lean condition could also be the cause of the P0420 :described as a catalyst efficiency problem. It would be best to have the vehicle taken to a reputable repair facility that is capable of engine performance diagnostics and have them run tests for these codes. The gasket you mention is most likely a valve cover gasket not the head gasket and would not cause these codes. Although you should have this leak fixed before it becomes a problem.

Hope this helps..

Posted on Apr 20, 2009

  • 155 Answers

SOURCE: engine check light& error code p0301 on my 2003 rav 4,

Unless your computer in your car is faulty... the check engine light came on because it, or one of your vehicle's many sensors detected something within your vehicle was not operating under preset factory conditions. Fortunately, the error code that was extracted was indeed a cylinder # 1 misfire, which is fairly basic. Could be a bad spark plug, wire, etc. or you may have gotten some condensation inside the plug boot. Your mechanic did indeed clear the code, but drive it for awhile and see if it repeats. Normally with a cylinder misfire, you'll notice a small stutter when you accelerate or idle. If your Check Engine light returns, have the codes extracted once more. If the same cylinder is misfiring, have him replace the spark plug and wires.

Posted on Jun 10, 2009

  • 1 Answer

SOURCE: Warning lights on a 2006 toyota rav 4 32,000 miles

I had the same problem. A computer check showed that the emission system was having difficulty. The catalytic converter had to be replaced. The car had under 80,000 miles on it so it was covered by a warranty (State law? Federal law?).
My battery was also dead. That was replaced free too. It had a 7 year warranty.
I do NOT purchase extended warranties.

Posted on Jun 26, 2009

scottyoung56
  • 89 Answers

SOURCE: 2001 Avalon Check engine codes P0440,p0441 and p0446.

yes it would be a smart thing to do and no it is not that hard it should onlt have two bolts holding it on

Posted on Aug 03, 2009

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Overheating


I would recommend that you bleed all air out of the cooling system. The bleeder valve is located on top of the engine. Once engine starts to overheat or when you can hear bubbling back into the overflow bottle, turn car off and open bleeder valve. If you see bubbling you have air in your system. Bleed the system a couple of times and see if this helps.A heat sensor sending unit which controls activation of the electric fan could also have failed.But if the heat sensor is properly working then check the radiator cap is it properly fitted or got loose.If its loose it will release the pressure and car will overheat.But if the radiator cap is properly closed.Then its time to check the HEAD GASKET.As you have replaced the head gasket still get it checked is it overheating very quickly or is the head gasket placed properly also check the coolant level in the car. Thanks. you can rate this solution and show your appreciation.

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Engine check light read p0171 and p0420, noticed a leak of engine oil on cylinder 2 area of head gasket when checking the sparks plug, is that the cause?


P0171 code is described as: lean condition bank 1, oxy sensor 1. If your vehicle is a 4 cylinder, which I believe it is.. you have got a lean air/fuel mixture being found by the ecm(computer).This can be caused by several things. The first of which is a possible vacuum leak at or near the intake manifold. This can also be caused by a MAF(Mass Air Flow) sensor problem or even by something as simple as a clogged fuel filter. This lean condition could also be the cause of the P0420 :described as a catalyst efficiency problem. It would be best to have the vehicle taken to a reputable repair facility that is capable of engine performance diagnostics and have them run tests for these codes. The gasket you mention is most likely a valve cover gasket not the head gasket and would not cause these codes. Although you should have this leak fixed before it becomes a problem.

Hope this helps..

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