Question about Ford Escort

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My Escort runs real goods when it is cold but after it warms up it feels like it is starving for fuel,i sometimes have to feather the gas pedal?

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Is the check engine light on? Sounds like it possibly may be a coolant temperature sensor for the computer. Also sounds like a few other things but if the check engine light is on, drive....limp on down to autozone and ask them to scan your codes (and on a ford, scan it anyway because the light need not be on for there to be memory codes or pending codes present)
You can cause your own check engine light to come on by trying the following....while running and at operating temperature...unplug the Mass AirFlow Sensor and see if the idle or driveability changes, do the same with the Idle Air Control Motor, Engine temperature sensor for the PCM. Also, get a can of carb clean or brake clean or something when it's at operating temperature, spray around the intake and all areas that you see vacuum hoses to see if you have a vacuum leak (you will notice a definite change in idle if you found a leak with carb clean)

Curiousity though, year and mileage?

Posted on Mar 29, 2015

  • whtownejr
    whtownejr Mar 29, 2015

    Could be a cylinder misfire too.....when was the last tune-up?

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What would cause my Escort to starvefor gas after it warms up


Could be several things. The engine has a cold start routine which enrichens the fuel mix and sets the timing for cold starts. The problem you have is after the cold start routine kicks out.

Mainly this can be due to a loss due to an intake manifold gasket leak or if there are stuck manifold runners. Manifold runners are not on every engine, but the idea is that each intake has 2 chambers and one is leaner than the other. So your engine may be running too lean because the runners are not switching properly. Sometimes the activating rods fall off because plastic clips become brittle and break.

Do a look up for these parts while identifying the engine size and Year. The search may show you photos or even videos of how to fix this.

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I have to keep pumping the gas pedal to keep the engine running, it acts like it is starveing for fuel.then after it warms up a bit it will run at an idol. then when i step on the gas pedal it boggs down...


2 things to try-
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