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My 1998 buick park avenue runs great at time then at time it…

My 1998 buick park...

My 1998 buick park avenue runs great at time then at time it begins miss firing and loses power like two cylinders or not firing. I have a simple ELM 327 code reader the reads p0300. I do most my own work but I am baffled at the randomness of the occurrence. It seems to be a faulty sensor or shorted wire that comes and goes.

Mechanic's Assistant: Is the power loss consistent, or does it fluctuate?

It fluctuates. I my drive for an hour just fine. Other times it acts up within 10 minutes.

Mechanic's Assistant: Are you fixing your Park Avenue yourself? What have you tried so far?

Myself New wires, new plugs, spark, from the coils which is good.

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Answered in 12 minutes by:
3/25/2018
john aka eauto
john aka eauto, The Car Guy
Category: Buick
Satisfied Customers: 17,325
Experience: 15 years as a auto tech
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How old are the ignition wire's?

john aka eauto
john aka eauto, The Car Guy
Category: Buick
Satisfied Customers: 17,325
Experience: 15 years as a auto tech
Verified
john aka eauto and 87 other Buick Specialists are ready to help you
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Customer reply replied 3 months ago
As old as the car I think I bought the car 8 years ago
Phone call session started
Customer reply replied 3 months ago
What is my total bill. And I'm I billed before I try the suggestion or after I follow the suggestion and find it worked?
Customer reply replied 3 months ago
what is the total bill?
Customer reply replied 3 months ago
No, the mechanic said he did not no the billing procedure. What is the bill?

The bill is both charges you agreed to... I am the mechanic you spoke with

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