Toyota Repair Problems? Ask a Mechanic for Answers ASAP
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Before the sensor is replaced, the workshop should block the EGR valve with a metal sheet. If the car then starts up better, the EGR is the cause, this no longer closes sufficiently.
The unintentionally recirculated exhaust gas can then lead to similar problems in cold weather as a defective preheating system. Also that the engine is better to start with staring aid spray is typical.
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