Have a '93 explorer sport 4.0 liter engine about 75,000 miles, original owner , well maintained and cared for . Developed bad pinging on acceleration which has continuously gotten worse . Posted here about it a month ago with a few responses . Did some google searches and got a mixed bag of info from bad spark plugs,wires, maf sensors dirty, carbon build up etc . Went to my so called reputable local service station .Was told it didn't come up with any codes , sensors were probably ok , not the EGR , recently tuned up with new plugs and wires , it went away for the most part with high octane , looked like it was a text book example of the service bulletin so I went for it . He printed out for me an all data service bulletin on the problem by ford which recommended motorcraft Carburetor tune-up cleaner PM-3 to flush out the carbon in motor . Agreed on a price of $120 plus oil change and brought it in to be done . When I went to pick it up I was told after the cleaning it developed a tapping sound in the motor and to drive it around for a few days and see if it goes away . He thought maybe it would work itself out if it was a piece of carbon sticking or clogging something up inside .After a good day of driving it hasn't gone away and it pings like crazy still . Needless to say I'm pissed and am quickly starting to hate this truck that was until now a great truck . He said if it didn't go away and he had to 'open up the motor' to fix it he would but no mention of money and who would pay for this . I'm completely open to suggestions as I don't know what to do and how to handle this situation I suddenly find myself in . I feel sorry for the service station guy and don't think he did anything wrong on purpose but I still just want my truck fixed . So to summarize ........ SOMEBODY PLEASE HELP ME !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! ok I'm better now ! thanx Ron
- posted
20 years ago