Hard start when hot

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Jan 27, 2007 | 07:23 PM

MBBCop

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Junior User

Joined: Nov 2005

Posts: 74

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From: West Chester

Hard start when hot

1988 F250 4x4 351 manual trans 117,000miles. Truck did sit for about year prior to me getting it last summer, but has been running for past six months. Truck starts fine when cold but after warms up and run for a bit I have a really hard time starting it. The only way is to fully press the gas pedal and crank for 10-15 seconds or more.
Any insight to a fix is appreciated.

Jan 27, 2007 | 07:36 PM

quicklook2

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Joined: May 2004

Posts: 11,289

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From: Lakewood, Ohio

check codes, do tuneup.

when you floor the pedal the computer goes into limp mode.

Jan 27, 2007 | 09:02 PM

mach10533

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Joined: Sep 2003

Posts: 41

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may need to check temp sensors. If it fails it may tell the engine that it is cold when it is warm and may make it run extremely rich.

Feb 14, 2007 | 10:14 PM

emiltech

Freshman User

Joined: Jan 2007

Posts: 45

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From: Kamloops

how many miles on truck,....throttle body may be worn, makes tps voltage to high for the amount the throttle is open a idle,....u can modify tps slots to adjust for wear.

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