Question about 2003 Mazda B-Series
EGR valve is faulty is my educated guess, could be other things. Do yourself and US a big favor and buy two things. I) a Haynes manual for your car and look at the chapter on emission controls, and 2) buy an inexpensive fault code reader. They will both pay for themselves in their first use!
Posted on Apr 03, 2015
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Posted on Jan 02, 2017
I had a head gasket going when I have a rough idle. Just weeping coolant past the number 1 cylinder. When I pulled the head the piston was all shiny and steam cleaned. $500 dollars all good now.
Posted on Nov 04, 2013
SOURCE: 1997 buick lesabre- scan codes
How about a blocked exhaust converter
They only last 12 to 14 years, under perfect
fuel trim conditions, with no misfires & you have
those or did
You changed the fuel filter & checked pressure at the motor?
IAC-Idle air control--so no--idle control is not your problem
Posted on Oct 08, 2014
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