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Engine loses power and stalls at low speeds

Tiny
AFDSMSHADETREEMECH
  • MEMBER
  • 1998 MITSUBISHI ECLIPSE
  • 2.0L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 188,789 MILES
While driving the engine will stall usually at low speeds sometimes when it loses power I can keep it running by letting off accelerator or flooring accelerator. I'm thinking a sensor is causing the issues. It seemed like it was bad gas but I ruled that out. Fuel pressure seems to be good just changed plugs and plug wires an had to put a helicoil on number 4 plug but engine ran fine afterwards. My car has the 2.0l dohc 420a non turbo engine it is auto transmission fwd. Any ideas please info is appreciated. Would like a diagram for all the sensors (not in Chilton book).
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Saturday, July 4th, 2020 AT 3:11 AM

1 Reply

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

First thing I would suggest is to perform a fuel pressure test.Sounds like you might have a weak or failing fuel pump.If you don't have access to a fuel pressure tester most auto parts stores have a tool loaner program and can rent you one.Here is a tutorial showing what is involved to test fuel pressure:

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

I've attached a picture below for your car fuel pressure specification below.Hope this helps and thanks for using 2CarPros.
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Saturday, July 4th, 2020 AT 3:50 AM

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