PMGR starter problems!
FTE Legend
Joined: Nov 2015
Posts: 30,935
Likes: 4,123
From: Angier, NC
Ok a few test to see where to look for a cause.
Using a test light put it between batt and a batt lead. If it lights up bright you have a large drain. If really dim a little drain say like from a radio but this would not kill the batt.
Now if bright remove 1 fuse at a time till the test light goes out, that is the system to look at fro the drain.
Now if that does not find the drain remove all wires going to the ALT and do the test light test again.
I also take it you have looked at the truck at night to see if any lights may be on really dim and not be seen during the day.
Dave ----
Thread Starter
|
Lead Driver
Joined: Mar 2008
Posts: 7,188
Likes: 384
From: Near Los Angeles
Each morning when I tried to start it I have been where I did not have access to any tools. Today I was prepared. When it barely turned the engine and then failed, giving only a click, I tested the battery. I was surprised to find it fully charged. The j/y relay from the 90's was bad. I replaced it with the oem relay and boom! full power and started right up.
I have a lot of family visiting, and when they leave I'll be able to install a 175 amp mega fuse in the + line to starter, but until then it is how Ford ran it, live all the time and unfused, and that bothers me. It will change.
I have a lot of family visiting, and when they leave I'll be able to install a 175 amp mega fuse in the + line to starter, but until then it is how Ford ran it, live all the time and unfused, and that bothers me. It will change.
Thread Starter
|
Lead Driver
Joined: Mar 2008
Posts: 7,188
Likes: 384
From: Near Los Angeles
Today I finally had time to dive into the search for the problem. I checked all the wires not oem, and some that were, for a short open circuit. I found only one live when the key was off. The wire had been cut at some time, and was lying there in the engine compartment. I sealed it up and secured it.
I also found that I had zero ground on the block. Wow. It does spin the engine faster, but I'll see what happens in the morning. The first start is when it has trouble.
I also found that I had zero ground on the block. Wow. It does spin the engine faster, but I'll see what happens in the morning. The first start is when it has trouble.
Thread Starter
|
Lead Driver
Joined: Mar 2008
Posts: 7,188
Likes: 384
From: Near Los Angeles
The truck is fixed. Thanks for all the help. Electrical work is my weakest area of automotive work. I had a bad starter relay. I also went through and cleaned all my connections and installed a new ground to the block.
Thread
Thread Starter
Forum
Replies
Last Post
F-250 restorer
1973 - 1979 F-100 & Larger F-Series Trucks
10
Jun 19, 2017 12:04 AM
FordPickup460
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
2
Mar 17, 2005 12:42 AM
