[kpyro]

Ok I'll try and give as much info as I can about my problem
I hope someone can help me.

I have a 1987 f-150 300 6 CLY that starts right up and then
dies after a few seconds unless the throttle plate is opened slightly.
It also stumbles off idle and has a miss.
If I play with the throttle a while I can get it to settle
and idle sometimes. If I remove a cap from the intake manafold
vacuum it will idle but still misses.

Intake vac is about 16-17 in and does not fall at high rpm so cat is ok?
The TPS tests good.
I have cleaned the (idle bypass sol.) and it seems to be functioning
Should this seal completely when no signal is applied?
When I take the SOL off the valve will close completly but when I put it
back on I can see the SOL plunger pushes the valve open slightly.
Plugs look ok slight spot of redish area otherwise clean.

KOEO 11 pass 11 pass
CM 87 Fuel Pump CKt 33 EGR
Pressure tested ok I dont remember valu but it was good
EGR is probably junk.
(KOER was done with vac leak it was the only way to keep it running for test)
KOER 41 No HEGO switching detected always lean (SOMETIMES)
44 Thermactor Air Injection system inoperative (ALWAYS)
I havent measured the out put of the O2 sensor yet but it
shouldnt be in play when the engine is cold anyway.
The air pump was shot even before I got the truck.

Anyway any ideas here ?
I just realized I forgot to test the ACT sensor I will check that if I can find it.

Thanks for any help.
Ken