Hi to all,
This is my first time here in this forum & would really appreciate any feedback from any one of you who is aware of this problem, I will search for this type of problem on the forum, but thought to post this first.

I'll try to be very clear and exact in describing my problem I also listed the parts that were replaced below.

1986 E-150
302CI
8 CYL
Fuel injection
116,000 miles

When I drive the van especially in hot weather at under 45 MPH (no problem on the freeway unless I slow down in traffic) eventually what would happen is that it will start to surge & I would hear a backfire coming from the air filter housing if I step hard on the gas, so what I do in order to not to get stuck is I step on the gas to keep the RPM's high than put it into nutural, but eventually it will cut of & die, also if I left it in park ideling with the a/c running & high beams on within 15 minutes the engine will start to shake, miss & try to adjust to keep itself running, my battery voltage would slowly drop from the normal 14.60 volts down to if I can recall correctly somewhere around 11.00 volts or less than it would die...
I noticed that the computer will get very hot with this symptom.
It will start up again after about 10-30 minutes & limp back home...

Parts that were changed:

Battery was changes 3 day ago.
Alternator & it's wiring harness kit replaced at 113,000 (old harness was burned)
Spark plugs replaced at 115,000 miles (Autolite #25 were used)
Fuel pump (in tank) replaced at 109,000 miles
Fuel pump (external) replaced at 80,000 miles
Idle air bypass valve was replaced at 1000,000 miles
Oxigen sensor was replaced at 88,000 miles
Map sensor replaced at 110,000 miles
TPS sensor replaced at 110,000 miles
Colant temp. sensor replaced at 110,000
EGR valve replaced at approx. 110,000 miles
Air charge temp sensor replaced at 109,000 miles
TFI module replaced at 110,000
Catalitic converter is not pluged
Installed a new computer a couple of years ago, but it did not changed the symptoms so old one was reinstalled.

I have a mechanic friend that chacked & did most of those repairs & he now thinks that the computer harnss is bad & needs to be replaced, he also noticed that there was some corrosion on the plug that connects to the computer harness & cleaned it with some electrical contact cleaner.

So, that's most of it.
Thanks again guys I would really appreciate any feedback. <!-- / message --><!-- BEGIN TEMPLATE: ad_showthread_firstpost_sig --><!-- END TEMPLATE: ad_showthread_firstpost_sig -->

 

Thanks again guys I would really appreciate any feedback.