I have a 2001 Ford 150, 5.4. The truck had a mid fire so ...

Hi, my name is\*\*\*\*\*’ve been a technician on Just Answer since 2007 and I'll be helping you today. I'm sorry to hear you are having difficulties with your vehicle. I know how inconvenient car trouble is, but together, we will get your vehicle back up and running quickly. May I ask whom I am chatting with today?

Hey buddy I talked to you the other day about my Nissan, this is chris

Hi Chris, nice to hear from you again! Ok, is the check [engine](/topics-engine-ford/) light on at this time?

it is. But with the ice I can’t get them read yet. Like I said it runs great idle, but when you drive it. It has no power and back fires in the intake

Ok I suspect one of two possible causes for this. First, if you can, try unplugging the maf sensor, then start it and drive it, if it's got restored power, then replace the maf sensor. If there isn't any change, then I suggest pulling the front or upstream O2 sensors out of the [exhaust](/topics-exhaust-ford/). This will leave open holes for the exhaust to escape through if the converter is plugged up due to the original misfire problem Give these tests a try and let me know what you find. When you can. Thanks Chris.

do you think I should test the fuel pressure

At this point, I don't think it's the problem. Ordinarily, you won't get a backfire with low fuel pressure.

Ok I’ll let you know what I find out

Sounds good.

Thank you

You're very welcome.