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Mine is an OHV 4.0 & the damper (regulator) is on the engine not in the tank, this i do know not the PCV valve, it idles smooth till the regulator starts doing the wrong thing & then it dies or runs like it is about to die, rpms drop as well

It has a new IAC, also a NEW Mass airflow & a new TPS, starts great, when cold idle is a little high, but comes down in a couple of moments usually, moan does not start till it has been driven for a bit, per what i am reading, it is the fuel pressure damper (regulator), so i will get it next & a...

I have a 99 model with v6, I have an intake moan, but only after it is driven for a while, new mass airflow sensor, new tps, new iac, moaning started after those were replaced, still need to do plugs wires and coil, but no starting issues at all, no check engine, sooooo what could it be? the...

Just a quicky LOL TY for this forum & letting me join From East Texas Own a 1999 explorer 4 door base model with OHV 4.0 v6, just starting to slowly fix all that is wrong....so this forum will be a big help I am sure