Hard starting and engine stalling

Tiny
KHEWLETT511
  • MEMBER
  • 1997 FORD EXPLORER
  • 4.0L
  • V6
  • 4WD
  • AUTOMATIC
  • 178,000 MILES
So my vehicle when you start cranking it takes a bit but it turn over, but it idles bad and back fires. When you try to give it gas it makes it worse to the point it just shuts off. I have checked IAC, valve throttle body, MAF, TPS, and some EVAP, but everything seems to be okay. I have not checked fuel pump pressure. I hear it prime when I turn key and would think it would barely run if it was pump. The only thing that seemed to help was when I unplugged the MAF and ran it. Then it started okay and idled almost perfect but you still really could not give it any gas. I have looked at EVAP hoses the best I can and have not seen any bad ones so I am all out of options. I do not know what else to do.
Saturday, July 1st, 2017 AT 9:41 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,967 POSTS
Hello,

It sounds like you hit it on the money with the MAF which will cause the problem you have described.

Here is a guide to help you get the problem fixed.

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

Please let us know what happens.

Cheers, Ken
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Monday, July 3rd, 2017 AT 1:01 PM

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