Re: 1990 F150 pu Va**** locking

On Sat, 10 May 2008 05:00:37 -0500, letterman@[EMAIL PROTECTED]
>Last fall I bought a used 1990 F150.  It ran fine all winter.  Now
>we're getting warmer weather, and after I drive the truck for a half
>hour or so, it refuses to turn over, or turns over so slow it's
>rediculous.  Once the engine cools, it starts right up.
>
>This is a fuel injection 5 liter engine with manual trans.


Va**** lock is not likely your problem since it has EFI that
operates at pressures much higher than a carb system and
constantly recirculates cool fuel from the tank thru the
system.

If it is turning over slowly, that would likely be a starter
problem.  Check all connections to be sure they are tight
and clean.  IIRC, that model has two starter solenoids; one
on the right inner fender and the other on the starter.  The
most likely candidate is the one on the fender which is easy
to get at and replace.  It is also cheap.  The other
solenoid on the starter has an ignition wire that frequently
corrodes or becomes loose.  It is a spade connector that is
easy to get at from under the right side.  Make sure that
connection is clean and tight.  Put some electrical grease
or jell or whatever on the connection to prevent future
corrosion.

Don't forget the starter may be due for replacement.  If it
turns the engine easily when cold, it should be OK but, that
is no guarantee.  Many auto service centers or parts stores
offer a free evaluation of the starting and charging system
to be sure the charging system is up to par, the battery is
strong and the starter is not drawing too much current.
Your problem should be an easy fix.

Lugnut