Multiple miss fires

Tiny
HEWITT53
  • MEMBER
  • 2001 MERCURY VILLAGER
  • 3.3L
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 100,000 MILES
When van warms up misfiring spitting and sputtering no power. When dies it is hard to get started back up. Then one van keuls all the way back down it starts and runs fine. Then the same thing again. If change the crankcase sensor changing knock sensor I am it starts in runs fine nothing, same thing again exchange them crank case center james knock sensor. I am lost. I do not have a lot of money and I am doing this myself.
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Friday, October 14th, 2016 AT 1:42 PM

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Tiny
HMAC300
  • EXPERT
With this type of problem misfire your cheapest option is to take to a mechanic so he can freeze frame it and check voltages of sensors and injectors as well as run a mode six to find the problem. if it is not low fuel pressure/vacuum leak or low compression. see link for fuel pressure test.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator
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Friday, October 14th, 2016 AT 3:37 PM

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