Originally posted by shytot4x4
Hi guys! hope you don't mind me tagging on to this thread...
I was wondering if ONP 00M12 might relate to my little problem.
'98 4.0 SOHC 4x4, UK spec 54k miles.
The truck has recently developed 2 (possibly related) engine faults.
1: there is a constant rattling sound from the front area of the engine. Not a heavy mechanical sound, more like the noise you get when you vacuum (hoover?) up grit from the carpet. During investigation with a stethoscope I found this noise most prominent in the area of what looks like a hose fitting on the front right side of the engine, about half way down on (your) passenger side.
2: when the throttle is snapped open from idle there is a momentary but very distinct sound of an air leak in the induction system. A bit like what you'd get when you remove the air filter from a carburettor engine. This around appears to come from the top centre area of the engine.
The truck is booked into the dealer on thursday for a diagnostic check. The only problem is that Explorers are VERY rare over here in the UK and I am fairly certain that the techs will not have worked on an Ex before. If they diagnose anything that might relate to ONP 00M12 or similar it might just be a useful bargaining chip!
TIA
Simon H