Engine Problems of Toyota Scion Xb

The contact owns a 2005 Toyota Scion Xb. The contact stated that while driving at speeds of 35 mph, the check engine, tsc and abs warning lights illuminated simultaneously on the instrument panel. The vehicle was taken to the dealer where the spark plugs were replaced. Immediately following the repair the exact same warning lights illuminated on the instrument panel. The vehicle was left in the dealers possession for further diagnostic testing. The dealer advised the contact that the engine needed to be replaced. The manufacturer stated that the vehicle was outside of the factory warranty and repairs would be at the owners expense. The failure mileage was 59,900.

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The engine oil filter adapter does not provide sufficient threads to safely retain the oil filter on the engine imo. The filter on my xb was held on by 2 1/2 threads after it was tightened by 3/4 of a turn. Because of the way the engine housing and filter adapter are machined, the amount of protruding threads that the filter can be assembled onto is uncontrolled and there may be cases where the filter will pop-off while the engine is running, dumping all the oil from the engine. Here are some fixes; (for existing engines) unscrew the adapter so that the filter can be turned on with 4-5 turns before the seal contacts the mating surface and stake it in place. (for future design) provide a positive stop in the housing or adapter so that the correct protrusion of the adapter threads are obtained. Issue was found and fixed by me without the filter coming off in service, but it did concern me enough to fill out this complaint. This issue may apply to other Toyota vehicles with the 2. 4l i4 engine.

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The contact owns a 2008 Toyota scion. The contact stated when depressing the brakes, the brake pedal would fall into the floorboard and would feel spongy and soft. In addition, the vehicle was consuming large amounts of engine oil. The dealer was unable to duplicate or locate any failure within the vehicle. The manufacturer confirmed that the vehicle was operating as designed. The vehicle was not repaired. The failure mileage was 18,000 and the current mileage 46,000.

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There is a driving problem with a new car when starting it with a cold engine. The vehicle bucks and jerks when driving at slow speed until the engine is warmed up. The vehicle does not produce trouble codes. Therefore, the dealer claims it is operating normally although the jerking and bucking is quite disruptive and not at all normal.