I've searched the forum and nothing seems to quite match my latest problem so here goes:
1999 SE 3.0 auto suddenly developed a rough idle. At the end of a reasonably long drive, during which it was stationary and idled well a couple of times, it started running roughly as I turned into a driveway. Starting a few minutes later the same thing happened. Once it gets above about 1000rpm it seems normal.
It doesn't feel like it's missing but the idle goes up and down a bit and occasionally drops very low, almost stalling. The fluctuations are quite irregular.
The ORPS was replaced in March last year so I'm hopeful that's not the cause, although of course it could be.
The first job, since it's so easy, is to check the fuel filter and housing for a blockage. I don't think that's the problem though, since it would affect high speed running as well.
What I would like to know is, could it be the oil rail PCV or the EGR valve? I'm trying to work through the simple things before allowing panic to set in...
Cheers
Rich
1999 SE 3.0 auto suddenly developed a rough idle. At the end of a reasonably long drive, during which it was stationary and idled well a couple of times, it started running roughly as I turned into a driveway. Starting a few minutes later the same thing happened. Once it gets above about 1000rpm it seems normal.
It doesn't feel like it's missing but the idle goes up and down a bit and occasionally drops very low, almost stalling. The fluctuations are quite irregular.
The ORPS was replaced in March last year so I'm hopeful that's not the cause, although of course it could be.
The first job, since it's so easy, is to check the fuel filter and housing for a blockage. I don't think that's the problem though, since it would affect high speed running as well.
What I would like to know is, could it be the oil rail PCV or the EGR valve? I'm trying to work through the simple things before allowing panic to set in...
Cheers
Rich