codes P1399 and PO301 I've replaced the EGR valve and the spark plugs but the car still miss firing
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2000 Acura TL Question: code 1399 and miss firing
patrick mannion from Greg Solow's Engine Room, October 17, 2010, 10:56Master
P0301 is the number 1 cylinder is miss firing change the spark plug and coil in that cylinder to another cylinder erase the codes drive the car see if the mis-fire changes to the cylinder you have moved the suspect parts too if so you may have a bad coil or plug,
P1399 is a random mis fire code, I have had to take of the intake manifold ans carefully clean the EGR ports to clear this code.
ReplyVDB, October 17, 2010, 13:22Rookie
I switched the coil packs around and replaced the plugs with the same codes keep coming up. When you say EGR ports are you talking below the EGR valve or the ports in it? I have put a new EGR valve on.
Answer #2F S B December 18, 2010, 08:56Rookie
I need code firing for ford v8 351 bronco nd 302 musting year 1988-1990