Auto Trim Tuning
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Planet Waves Auto Trim Tuning Machines 6 In-Line
US $59.99
Planet Waves Auto Trim Tuning Machines 6 In-Line
US $59.99
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Check Engine Light P0420 – toyota corolla 1999.?
i had a check engine light glow last week. i took it to precision auto tune care and they did engine diagnosis and said that P0420 engine code was retrieved. They provided the following analysis statement asking me to replace catalytic convertor. Could someone advice on the problem ?
“Monitored O2 sensor data and observed simular wave patterns between oxygen sensor 1 and 2. Measured resistance of heater element of oxygen sensor 1. Oxygen sensor is within specifications. observed fuel trim to be on negative side and there is residue around base of intake manifold indication of leakage. observed spark plug wire at base of coil to cylinder 2 to arc occasionally causing missfire. Vehicle runs extremely rough at idle.
Ran emissions diagnostics and vehicle had high emissions of all 3 gasses as well as failed smog. rec replacement of faulty catalitic convertor.
catalytic convert below threshold.bank one.
change spark plugs and wires
if the problem persist replace the oxy sensor in bank one
do not replace any catalytic,
check for vaccum leaks.toyota are good cars.but ,does not tolerate unknowledgable hands under the hood.
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