2001 Mazda 626 6 cyl Front Wheel Drive Manual 75200 miles
Yes, very low mileage, mostly city/some highway.
Codes 174-175 mean 'rich fuel mixture'. Mechanic kept car for week to replace air filter/MAF sensor. Light came back on after one day. Per Auto Zone suggestion; put in expensive fuel injector cleaner. Light stays off for 300 miiles. Repeat cleaner with fill up. Light stays off for 200 miles. Repeat cleaner with fill up; light stays off for only 50 miles.
I need this car to pass inspection now, what can I do? Does this very temporary fix suggest a specific problem? Replace a fuel injector? Which one? I'd gladly follow another temp fix to get light off long enough to pass inspection that is now required in November.
OH, one more thing, I have to add coolant once per month? Or so, no leakage on driveway, but reservoir is empty when I check it. Car DOES seem to run just fine in all conditions, temp guage never gets 'hot'.
As much info would be appreciated as I don't trust the knowledge of this mechanic, although he's fair with his pricing/very thorough with more simple maintenance/oil& brakes etc.
Friday, October 16th, 2009 AT 10:35 PM