Badstang21

Ok I just got my first mustang.its a 4.6L gt .. While im driving at a lower rpm it seemsto start misfireing, when you get into the gas it goes away , and it only does it gor like 10 mins then goes away, it is also hard to start and will idle is unsteady sometimes. Where do I start? Fuel pump? Coils?

cliffyk

Replace the plug wires unless you know how old they are; then pull the plugs and see how they look--or just replace them as they are cheap enough...

disposablehero27

+1, sounds like plug/wire issue.

MidNightRunner

Check you vac hose lines too.