Hi, I am new to this forum thing. I bought my 2002 MPV used with 40,000 miles. 2-3 months back check engine light came on with code p305. My mechanic told me that cylinder 5 misfire and he changed the coil for it. He checked the sparked pulgs and it was fine. After changin the coil, he told me that there is no misfire now but light came back with the same code after 200-300 miles and since then it's on & off every couple of days. He cleaned the computer twice. He also suggested to try chevron fuel injector cleaner and I did. Light was gone for a week and yesterday it came back. I never had my tune up for fuel injector cleanning done.

Any suggestions will be much appreciated.