someone please help!
The early modular 4.6 and possibly 5.4 engines had a poor design on the primary battery to starter cable (large red cable). They would corrode internally from the starter end up about 2-3 inchs under the red cable coating. It is almost undetectable but will limit the juice going to the starter and cause no starts. Mine had it and I replaced the cable. In fact if you go to a parts store have the truck build date handy as there is a redesigned cable that was used on these trucks during production after a certain month.
BTW- OP -I posted a few diagrams in another thread that may help or assist - https://www.f150online.com/forums/v8...t-crank-6.html
Last edited by jbrew; Nov 9, 2012 at 12:21 AM.
Seized compressor ? Yea, that can happen and it does from the vehicle sitting; -not being started occasionally. What did you do , -remove the serp belt to determine?


