HELP! Electrical woes...
Thread Starter
|
Elder User
Joined: Aug 2000
Posts: 597
Likes: 0
From: Burke VA
HELP! Electrical woes...
Hi all,
This truck is killing me!! heres the short version. I replaced my I6 with a 351W. Got it running but the flywheel was out of balance (3 spd on-the-tree). Took it out and got it balanced, put it on with clutch, bell housing, starter to see if the shaking was gone b4 I put the trans in. Wouldn't start. Loud clicking from (new) seloniod. Jumped selonoid, still no luck. Starter and battery tested, both OK. I have about 11.5 Volts at the starter when I try to start it but the starter does nothing. In desperation, replaced voltage regulator, no luck. A couple times I noticed sparks behind the block but no wires there. Also the rod from the pedal rod to the carb got real hot the first few times I tries to crank but no wires are hitting it. This thing ran fine before I yanked the trans. I'm at the end of my rope, could it be the coil? I have no idea. help, anybody.
Jayson
This truck is killing me!! heres the short version. I replaced my I6 with a 351W. Got it running but the flywheel was out of balance (3 spd on-the-tree). Took it out and got it balanced, put it on with clutch, bell housing, starter to see if the shaking was gone b4 I put the trans in. Wouldn't start. Loud clicking from (new) seloniod. Jumped selonoid, still no luck. Starter and battery tested, both OK. I have about 11.5 Volts at the starter when I try to start it but the starter does nothing. In desperation, replaced voltage regulator, no luck. A couple times I noticed sparks behind the block but no wires there. Also the rod from the pedal rod to the carb got real hot the first few times I tries to crank but no wires are hitting it. This thing ran fine before I yanked the trans. I'm at the end of my rope, could it be the coil? I have no idea. help, anybody.
Jayson
Posting Guru
Joined: Jun 1999
Posts: 2,415
Likes: 3
From: Comox Valley, Canada
HELP! Electrical woes...
That is unique 
Sounds like the starter isn't grounded, or has a very poor ground. It gets its ground thru the mounting bolts, then thru the block to the negative battery lead.
Check the mounting bolts and the mounting surface of the starter, they have to be clean and tight. Also check the negative wire mounting bolt on the engine block, same thing clean and tight.
Good luck.
Sparky
Sounds like the starter isn't grounded, or has a very poor ground. It gets its ground thru the mounting bolts, then thru the block to the negative battery lead.Check the mounting bolts and the mounting surface of the starter, they have to be clean and tight. Also check the negative wire mounting bolt on the engine block, same thing clean and tight.
Good luck.
Sparky
Moderator
Joined: Jan 2001
Posts: 56,992
Likes: 2,741
From: Virginia
HELP! Electrical woes...
You gave some excellent observations. Sounds like you have a grounding problem. Do you think the throttle linkage got hot because the current from the starter was running through it? I would check your ground connection from the battery to the block and also take the starter off and clean the mounting surface. You might have to replace some small ground straps that used to go to the body since you might have burn't them in two the first go-round when the starter was trying to work.
Thread Starter
|
Elder User
Joined: Aug 2000
Posts: 597
Likes: 0
From: Burke VA
HELP! Electrical woes...
Wierd. I didnt have any grounding straps on the engine to begin with (not counting the battery ground) Engine ran for 2 wks before I had to pull the tranny. Why is it doing this now?
Jay
Jay
Junior User
Joined: Sep 2000
Posts: 99
Likes: 1
HELP! Electrical woes...
There is a stock braided copper ground strap that bolts to the back of the engine, or intake manifold, then to the firewall. this is necessary to tie the chassis, and engine electrics together. If your's is missing, buy, or make one. The reason it worked before is because everything from the throttle linkage, to the exhaust system can provide a ground, but they are not reliable (as you have discovered). The strap provides a good, resistance free, path for the electricity, and it's absence can cause a bunch of bizzare problems.
Thread
Thread Starter
Forum
Replies
Last Post
kyle j
1994.5 - 1997 7.3L Power Stroke Diesel
9
Jan 21, 2014 02:26 PM
birchwoodford
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
8
Mar 22, 2012 12:16 PM
berlincam86
1973 - 1979 F-100 & Larger F-Series Trucks
33
Feb 27, 2011 07:16 PM
