Question about 2002 Ford Thunderbird
You has two (or more) codes.
You listed P0340 which is Cam crank angle sensor.
This is usually cause by motor running hot beyond 230 F
and the heat damaging the cam angle sensor (CAS)
THE FIX is
replace the damage CAS
Inspect to make sure the fans are operation
Coolant change to 65/50 mix instead of 50/50
If you're living in sub-zero are then check the coolant bottle for the correct mix.
The front O2 sensors is not providing the data to the computer.
The front O2 (before catalytic is taking a lot more un-burn hydrocarbon and it should change before 85,000 miles.
Poor mileage and slow acceleration will occur if you do not replace the O2s.
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Posted on Dec 12, 2009
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Posted on Jan 02, 2017
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Here is the daignostic procedure for troubleshooting DTC P0141 (click over each image for zoom)...
Hope this helps to solve it.
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