19th Nov 2015, 15:23
Check this link out for info on misfiring of the Mazda, especially in moist weather. If the EGR valve keeps blowing, check catalytic converters, which feed the EGR valve.
EGR Valve Link: http://repairpal.com/failure-of-egr-differential-pressure-sensor-959
Converter Link: http://www.justanswer.com/mazda/7mqih-mazda-tribute-lx-2002-mazda-tribute-lx-v6-4wd-auto.html#re.v/327/
29th Mar 2011, 01:09
Rough idle when there is moisture or high humidity, is usually coil and plug related. Be sure to use the dielectric grease on the coil, and the coil connectors. And anti-seize compound on the plug threads. Usually if the coils are misfiring, it will damage your spark plugs. Change your upper intake manifold gaskets while you're changing the coils. They are cheap, and will save you from having to work on it again for some time. Cylinders 1, 2, and 3, are a bit of a pain to change, but 4, 5, and six are easy. Make sure you check the codes before and after the repair.