1996 Taurus gl
I just had a fuel tank replaced with a brand new one and used old sending unit/pump. Also replaced fuel filter. I was also told that some welding of the cross over pipe was done which was near and o2 sensor while replacing leaking oil pan gasket. Both jobs done at the same time. One day later, not only did the check engine light come on for 2 codes mentioned above but I believe the third one was for the O2 sensor(po161?). I'm being told that these all point to the MAF sensor. Any other opinions are welcome.
Thanks in advance.