It seems like the spark isnt strong enough or the fuel isn't burning properly. The car sat for 2 years, i draind the gas and put 5 gal of new 93oct. I then disconnected the fuel line and pumped the line out. I dodn't get all the fuel out, but i haoped to dilute the bad gas with good gas. Also the new harness had been cut by the maf, i soldiered and wrapped it back up there.