JodiJay22

i just did the upgrade to a mass air meter from a 93 4.6l out of a crown vic, ive done this before in other 5.0s ive had, but was wondering if this could be the cause of the misfire or did i just not happen to notice before this?

sjd3021

u cant just take a maf meter from a different car & motor & think its going to work, u need a tune

86 5.0L

does the '93 4.6l use the same size injectors as you?

listing any mods in your sig would help us not have to guess...

JodiJay22

yeah sorry i havent gotten around to adding my mods, ill be doing that tonight tho, and yeah they also use 19lb injectors.

Tony71502

Did you swap computers/other sensors? You can't expect a 5.0 computer to adjust/live with a 4.6 style part/engine.

JodiJay22

no i havent switched anything else, and this is a common upgrade, ive done it on a few other 5.0s with no problems, i was just wondering if a bad maf could cause a misfire.

Tony71502

MAF doesn't control ignition. It meters air and controls fuel.