Quote:
Originally Posted by Jamesp
I was hoping someone might narrow it down with the following symptoms/clues:
1) idle (low, and now surging and falling until the car stalls)
2) now occasionally crapping out at high RPM (right around Variocam actuation - ~4500 RPM)
3) a little bit of surging under load at any RPM at all times. (barely noticeable)
4) Put in 5 gallons of gas and the car is magically "fixed", Coincidence?
5) and its getting worse as time progresses 
Anyone have insight or a good guess at what problem or failing component would account for all of the above?.
No check engine light
2003 S manual transmission |
Sounds like fuel delivery problem, wouldn't hurt to do the throttle initalization process: Turn key to on for 1 minute without touching gas pedal, turn key off for at least 10seconds, then you can start engine as normally.
Check for pending trouble codes, use drive links to disable fuel injectors 1 at a time.
Lot's of 986 fuel pumps aging out these days, also might try a simulated fueling procedure without actually adding any fuel to see if you get the same positive results.