Hi Brian, thanks for the info. I definately don't disregard this being a bad coil pack.
I've been trying to monitor my car the last couple of days and two things seem to be in common when it fails. It has to be warm outside, or atleast the car has to be sitting in the warm for a while. In the mornins when it's only 55degrees it runs fine for the 12mile commute to work. After work it can act up within a couple mins from the car being started, before everything is fully up to normal driving temperatures.
The second thing is my O2 voltage drops down to 0.000v when the car is having problems. (ie: car is running way lean) I'm not sure which O2 the reading is coming from, it's just the 'blue wire mod' that I connected when installing my s-afc.
I have a weird theory though, is it possible for the fuel pump to heat up and work intermittantly? Not like a clogged pump, just one that shorts itself out if it gets hot? I had a mazda that when the starter is physically hot it wouldn't crank over, or it would crank over very slowly. When it was cold the car would fire right up. It ended up being a short when the unit got hot, it was trying to draw 2-3times more amps than normal.
I have Wednesday off and my tank should be under 1/4, so I'll pull the pump out and inspect it then.
Janine, to answer a couple of your questions. The car has 42k miles, and as far as I know has original wires. I changed the plugs a couple weeks ago (shortly before problems started). I'm in the midst of ordering new wires. (back order -- ugh!) I have no engine codes (wish I was getting them!!). I didn't know Advanced Auto can check our coil packs? We do have them around here. I'll try calling them up on Wednesday and taking it down there.
I really appreciate all the comments everyone!
Tim
'00 SVT
