Gray Wolf

I took my 1999 Ford Ranger (4 CYL.) into FORD the other day for it did not run right, the timing belt was bad and they changed the Plugs and wires on it. It still is not running right, so they are changed the Air Sensor. They believe that my K & N Air Filter left a piece of dirt into the Air Sensor and caused it to go bad. They believe that the New Air Sensor will make it run like a New Engine once again. Has anyone had this problem? Could it be because it was in a accident before I brought it, that is all I know about it. But I found out that it had a Stainless Steel Exhaust system on it when it was NEW. But when I got it no longer had it on. So could the dirt got into the Air Sensor than and when I brought it 4 years ago? I never noticed it run bad until this Winter. Yes it has 85,000 miles on it. My question is : The K & N Air Filter a bad filter? Ford thinks they are, and feels that the K & N Filter was the cause of the Air Sensor to go bad. They feel that the paper filter is the best, and that it would not have let the dirt go through it, and caused the Air Sensor to go bad.

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mre_power

filter may need a recharge. and a cleaning. when properly used they are adequate filter. not the best for filtering but only hurt mass air flow sensors and what not if improperly recharged. you have to spray off filter with hose then recharge it. then let filter sit for 24 hours. then reinstall. if the oil gets on the maf then you need to get a cleaner. and spray it. i forget proper spray. of coarse they beleave a new sensor will fix it. at 120$ or so for the sensor and a hours labor it will be fixed. maf are easy to take off and replaced

in my opinion if you are afraid to work on cars k&n air filters are a no go for that person.
sounds like your truck is doe for a tune up.