Got an update on this. I've since replaced the fuel filter and ran a bottle of Techron through the tank. No difference.
Took it to the stealer this morning and paid to have the car diagnosed. Found a code P0176 (Bank 2 lean, no 02 switching). Did a check on this on the forums and found:
P0176 Flexible Fuel Sensor (which seems to differ from the description from this morning)
The sensor input signal to PCM is continuously moniterod. The test fails when the sensor exceeds or falls before a max. or min. calibrated range.
FF = flexible flue
Causes
-Open or short in FF sensor VPWR circuit
-open in battery ground to FF sensor circuit
-open in FF sensor signa; circuit
-short to ground in FF signal circuit
-fuel contamination
-short to VPWR in FF sensor battery ground circuit
-short to VPWR in FF sensor signal circuit
-fuel seperation
-damaged FF sensor
-damaged PCM
So...does anyone have any info on where this sensor is?
