I have a 1999 subaru wagon with 246K miles. ***The car has been a dream,
and has not had any problems other than a bad oil pump and normal
maintenance. ***About 6 months ago the car was experiencing a loss of
power and wouldn't accelerate when I pressed the gas. ***I thought it
needed a tune up. ***After replacing spark plugs the problem persisted.
My mechanic put in on the diagnostic computer and everything checks out okay. ***
The problem has gotten really bad recently. ***If I floor the gas the car won't get above 1,500 rpm and sometimes it stalls out completely. ***If I "tap" the gas peddle I can get the rpms as high as I want.
We performed all of the obvious test, replaced fuel filter,
checked fuel injectors, check engine compression, checked the MAP
sensor, replaced the oxygen sensor, replaced the ignition coil,
and replaced the timing belt.
I have been driving the car for the past six months with this problem,
but it is getting progressively worse. ***Has any one experienced any
thing similar. ***
My mechanic thinks it might be the Mass Air flow Sensor. I have heard that the sensor may be bad even though it doesn't send any error codes.
***
We have been swapping sensors between my moms 1996 outback, but the MAF sensor is different. So this one I would have to bite the bullet and actually buy... expenssive trial and error. :-\ Any input would be much appreciated!
Thanks