will not start when hot !!
will not start when hot !!
Postmaster
Joined: Oct 2006
Posts: 4,816
Likes: 1
From: Davis & Newcastle, CA
Originally Posted by Liemavick
If it was a rebuilt starter take it back and have em swap it for another. I delt with the same problem and the swap hooked me up. Havent had a problem since.
New User
Joined: Aug 2007
Posts: 10
Likes: 0
I had the same problem with my '78 F150 with a 351. Replaced multiple starters, all the same deal. Would not start when hot.
I believe the thermostat was bad and when the engine was overheating (even though the dash gauge did not say it was in the red zone) the excess heat was causing either mechanical or electrical resistance in the starter to increase past what the 12v in the battery could overcome to spin the starter.
Whatever the reason was, replacing the thermostat with a known good one fixed the problem like flicking a light switch. the temp gauge showed a very noticeable reduction in coolant temp (needle swung about 1/3 of the way to the right instead of 2/3 of the way to the red zone on the gauge).
I believe the thermostat was bad and when the engine was overheating (even though the dash gauge did not say it was in the red zone) the excess heat was causing either mechanical or electrical resistance in the starter to increase past what the 12v in the battery could overcome to spin the starter.
Whatever the reason was, replacing the thermostat with a known good one fixed the problem like flicking a light switch. the temp gauge showed a very noticeable reduction in coolant temp (needle swung about 1/3 of the way to the right instead of 2/3 of the way to the red zone on the gauge).
Elder User
Joined: Aug 2007
Posts: 502
Likes: 0
From: Southern New Hampshire
i had the same problem in my 89i f-150 4x4 with a 300ci. i went through about 4 starters.......all had lifetime garentees too. i got so fed up with it i ended up replacing everything, battery, alternator, solenoid, starter, wires....... then realized that there is no heat shield from the factory that seperates the starter from the exhaust which is right next to it... i then just rebuilt the motor 
wanted a new project. but your problem is probably an overheating issue of sorts. take a temp reading of the engine using a multimeter or other thermometer other then your dash gauge and see how hot it is running at when it is warmed up. if it is above the normal operating temperature start tracing the the source whether it is a thermostat, water pump or radiator. or if your really handy with a welder then fabricate your own heat shield.
wanted a new project. but your problem is probably an overheating issue of sorts. take a temp reading of the engine using a multimeter or other thermometer other then your dash gauge and see how hot it is running at when it is warmed up. if it is above the normal operating temperature start tracing the the source whether it is a thermostat, water pump or radiator. or if your really handy with a welder then fabricate your own heat shield.
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deesnuts
Ford Inline Six, 200, 250, 4.9L / 300
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Mar 23, 2003 02:56 PM
