Hey Guys,
Unlike a few other cases, my problem is a subtle one, fuel consumption has increased by around 10 - 20% at a guess. Engine still purrs faultlessly as it always has though the exhaust is quite potent at startup.
My first thought was oxy sensor but speaking with Road and Track they seem to think that wouldn't be the issue as oxy sensor is for cruising only.
Sight unseen they are suggesting the temp sensor playing up causing the auto choke not to release or injectors fouled.
Temp sensor theory may check out as the car is idling when warm around 1000rpm where from memory she usually sits around 600-700rpm. Also the tacho needle is not steady at idle, oscillating between 800-1000rpm.
Car is 1996 3SGE with 180 000kms on clock. Can anyone suggest another cause, verify these possible causes and/or tell me how to check them out? Is it worth buying that injector cleaner stuff or is that a waste of money as I have been led to believe many of them are?
Thanks in advance.