I can jump the starter under the truck, and start it. Sometimesthe key works after the truck has been running a few mins. But if I let it sit for an hour or so, I have to go under the truck and jump it at the starter.

Could the relay be doing this??

New Starter, New Batts!

Help

 

Did you check the 30 amp fuse? It's F2-113, Bottom row left hand side 2nd from the end. They are the slow blow type.... try switching it out withanother one and see if that fixes it, there is a starter relay, It's in the central junction box, up under the brake pedal area on the fire wall.

 

Just noticed you were asking about a 450 I not sure if it is the same as a 250

 

I can't see that I would have a blown fuse, It starts with the key sometimes. But I will check the starter Relay!

Central Junction Box??? Under the Hood??


Thanks EOD

 

I Just noticed you were asking about a 450, I'm not sure it's the same as a 250

 

I'm not saying it's a blown fuse but a damaged one, just barely making contact some of the time. I had a simular incident with a fuel pump fuse on a gasser, I replaced the fuel pump only to find out it wasn't bad but that 90 cent fuse was....... easy check

 

According to the wire charts the central junction box on a 250 is located in the interior, on the firewll near the center portion on the truck

 

Is this for a standard or auto? Another area you might check is the clutch/netural switch ...... if it's auto try moving the gearshift lever as you try and start it (guessing here)

 

Auto, Relay is still my pick!

 

Cool.... Fuse, relay, netural sw, chaffing wires/loose connection...order of ease

 

Fuse is good. Checked the relay, its clicking when I turn the key.
Let me step back a sec and tell you the the starter was replaced 1 week ago.
This might be in the starter or loose connection, but this will have to wait till the AM.

Thanks for your help EOD