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Issue. Been chasing it for a couple of months. Will not do it everytime, but if it takes 10-15 seconds of cranking to start (first start of the day) it will also result in a rough idle (idle up to 2000 rpm for 15-30 seconds before it smooths out as much as it can).
LH 2.4. Most recent work:
O2 sensor replaced about 3000 miles ago (failed)
Replaced all 4 spark plugs wires and coil wire (found 2 with no continuity)
R&R Distributor cap and rotor
IAC cleaned (looked okay and nothing was sticking)
Throttle body cleaned (didn't see anything out of the ordinary)
This helped some of the rough idle, but nothing was really fixed.
So today, I ran diagnostic control functions 1 through 3.
#1. Nothing but 1-1-1
#2. popped 2-3-2 (Fuel system compensation for rich or lean air/fuel mixture at Idle) and 2-3-1 (same as before except at cruise).
#3. Heard everything as it should be.
I then ran checks on the O2 sensor. Disconnected it was cycling between .25 and .98 volts for the first few minutes and then it settled down to around .35. When I would move the throttle it would start its dance again.
I listened to the injectors and could hear clicking in all four. I pulled the fuel rail as a whole and check for function. Good spray. No drips after turning it off.
Pulled the 4 spark plugs (NGK BPR6ES). Found that the gap had grown from .030 to about .038 on all 4 in 8000 miles. All plugs where "white" so lean is the condition. Regapped to .030
Really won't know for a few days, but looking at my Trusty Bentley manual, I notice that the same fuse that protects the heated seats (has been blown for several months) also protects the fuel injection system relay. Sooooooo, what do you folks think? Has that been the problem the whole time? I haven't figured out what that relay does yet. So new fuse goes in, disconnect the seat heater wiring and watch and wait.
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