Hi F-150 owners.<br><br>I am a new member of this club and would like to have some advises from U on my F-150.<br><br>I do have a 1989 F-150 4x4 with 5.0L engine, AOD tranny, open differentials and need some technical help, my truck has so far the following modifications.<br><br>4" lift, 35x12.5x15, 4.56, K&N filter, MSD ignition, low temp thermostat, chip, high output alternator and optima battery, power pulleys.<br><br>1.- There is a hose going out of the front differentials house, seems that this hose was connected to somewhere but is not anymore, is it a vent hose or shall I try find where was it connected to?<br><br>2.- My engine has some minor problems, some times when idling the RPM's goes has high as 1600, what can it be? The thermostat maybe? It is 180.<br><br>3.- What engine modification is buck by buck the best to do? Headers maybe?<br><br>4.- It has automatic lockin hubs, is there any advantage in upgrade it with manual hubs? Any recommendations?<br><br>P.S. Photo has been added, check it.<br><br>Regards<br>Ray

Hi I'm a new member also I have many fords and many problems. Anyway to answer your questions The hose is just your vent since your truck is lifted replace it with a very long peice of vacume line and run it up to your inner fender away from water.If you wheel the truck locking hubs are way more reliable and cheap to replace.I have lots of parts for these trucks if your looking for somthing let me know . thanks Ricky