Mechanics

F250 STARTER IS NO CRANK CONDITION

1991 Ford F-250

Electrical problem
1991 Ford F250 V8 Two Wheel Drive Automatic 275, 00 miles

the batterys are good, the alternator is good, the starter is good but when I turn the key all I can hear is the solenoid click, I have tried cleaning the terminals on the starter and solenoid and batterys. What do I do?
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Willmc8609
January 1, 2009.




The Motorcraft positive engagement starter motor is used on all engines except the 4.0L and 7.3L Diesel. The starter system also includes a starter (ignition) switch, relay, neutral start switch (A/T) or clutch interlock switch (M/T), battery and heavy circuit wiring.
When the ignition switch is turned to the START position, the starter relay is actuated through the starter control circuit. This connects the starter motor to battery, permitting current to flow through the grounded field coil, actuating a movable pole shoe. See Fig. 1. The pole shoe forces the starter drive plunger lever to engage the starter and flywheel gears.

Check the Starter Relay
4.9LOn right front fender panel.
5.0L & 5.8LOn right front fender panel.
7.5LOn right front fender panel.

Dave H
Jan 1, 2009.
Would a bad starter relay cause my problem? When I turn the key the relay just makes a loud clunk noise. What does that mean?

Tiny
Willmc8609
Jan 2, 2009.
Is it the relay on the fender panel making the clunking noise? Or the actual starter motor?

Dave H
Jan 2, 2009.
It is the relay on the inside passenger side fender, I tried jumping the terminals but it still just clunked. Idk I been stuck in patterson for 3 days cuz this stupid thing so im desperate for info

Tiny
Willmc8609
Jan 2, 2009.
I have the EXACT same problem. Did you ever figure yours out? Did you check if your motor may be seized?
I've tried everything that anyone has told me about fixing this problem and still cant get it. Please, if you got yours going, HELP ME!
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Tiny
Fyrball
Jan 18, 2009.
Have you tried replacing the relay on the fender panel. Get a wrench on crankshaft pulley bolt to turn engine by hand to check if engine is jammed up?

Dave H
Jan 18, 2009.
I turned the engine over in my truck the way you said already. The relay isn't the problem because if I arc across it with a screwdriver, I get the same " click" noise. Its something AFTER that.

Big donation to the site if you can solve this problem PDQ for me.

Tiny
Fyrball
Jan 18, 2009.
There is nothing AFTER the relay except the starter itself ..try checking the fusible link i have arrowed on the bottom diagram ?

DESCRIPTION
The Motorcraft positive engagement starter motor is used on all engines except the 4.0L and 7.3L Diesel. The starter system also includes a starter (ignition) switch, relay, neutral start switch (A/T) or clutch interlock switch (M/T), battery and heavy circuit wiring.
When the ignition switch is turned to the START position, the starter relay is actuated through the starter control circuit. This connects the starter motor to battery, permitting current to flow through the grounded field coil, actuating a movable pole shoe. See Fig. 1 . The pole shoe forces the starter drive plunger lever to engage the starter and flywheel gears.


http://www.2carpros.com/forum/automotive_pictures/266999_fig1_2.jpg



http://www.2carpros.com/forum/automotive_pictures/266999_fig1_2_1.jpg



http://www.2carpros.com/forum/automotive_pictures/266999_start_2.jpg


http://www.2carpros.com/forum/automotive_pictures/266999_start2_1.jpg


Dave H
Jan 18, 2009.
So, thats good. Are you stumped yet?

Tiny
Fyrball
Jan 19, 2009.
OK so you are getting power (hot)all the way through the system .. so we must have a bad ground ... we need to check ALL grounds I would start with the relay ground point on the fender wall ...then the starter ground.. see arrows on diagram .. let me know


http://www.2carpros.com/forum/automotive_pictures/266999_start_3.jpg


Dave H
Jan 20, 2009.

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