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Hey folks

I pulled the codes on my 1987 brougham (307). I got a 13, 15, 21, 34......all the usuall suspects......Map ,oxygen,tps and coolant......
What is the best course of action..........start with replacing the oxygen sensor....to Map ? I dont think the coolant or tps are bad .....the car runs too well.

Any thoughts would be appreciated
 
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