Question about 2003 Ford F150 Regular Cab

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Hard to start when engine warm

Starter works fine and cranks engine, but it takes extended cranking ( approx 1 minuite or more for engine to start. This occurs only when engine is warm. When engine is cold it starts immediately. When engine is hot (immediately after sutting down) it statrs immediately. During cool down from about 5 minuites after stopping untill completely cold it takes extended cranking before it will start. Sightly depressing the gas peddle seems to help a little but it still takes extended cranking to start the engine.

Any assistance is appreciated.

Thanks

Sheldon

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  • Anonymous Mar 15, 2014

    battery is new engines cranks but wont start. Sometimes it will start and run perfectly. Seems worse in cold temperature

  • Anonymous Mar 23, 2014

    1994 Mitsubishi Montero hard to start after sitting for a long peroid of time or over night, if you keep cranking over the engine and feather the gas it will then strart

  • Anonymous Mar 28, 2014

    Engine skips when cold. ok after it warms up,gives po128 code

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Crankshaft sensor may be going bad

Posted on Aug 09, 2008

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Also check fuel pressure

Posted on Aug 28, 2008

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1 Answer

Won't crank when warm


It is possible that the solenoid on the starter binds when the starter is hot. When you say that the starter was tested, was it tested hot?

Does the starter click when you attempt to start it? When you turn the key, the switch energises a small relay, which in turn energises the solenoid, which in turn applies power to the starter motor.
The solenoid should make an audible sound when it pulls in the plunger.

If you have a second person, one could turn the key, and another could gently hit the solenoid with a rubber or plastic hammer. This worked on a Dodge minivan that I had.

An image of the plunger is available at
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