Question about 1999 Toyota Camry

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Engine Misfire issues on 99 Camry

I am getting a 300, 301, 303 and 305 engine codes. Check Engine Light blinks. There is a Foul smell from the exhaust and at certain speeds the car shakes. Changed all sparks plugs, coils and cables with new ones from Toyota. However, problem is still there. What's puzzling is that the problem (and Engine light) seems to stay on for 2 weeks, go away for 1 week and then come back.

Please help.. already have spent a lot of money and problem is still there.

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  • Anonymous Mar 30, 2014

    There is a loud humming noise coming from the engine. When sitting at a traffic light while holding the brake paddle down, the car will shake/tremble something awful. The car has had a front end alignment, replaced spark plugs, and the fuel injector for the number 4 spark plug has also be replaced, because of the dumping of fuel on that plug. Two weeks later it is doing the same thing. Number is getting wet from fuel.


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You need to take this to a dealer, I think you may have an issue with the injector circuit, possible a defective PCM or wiring issue to the injectors, I don't think that the injectors themselves are the cause.

Posted on Dec 02, 2008

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