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My Truck Idles High

HELLO ALL.... I HOPE I CAN GET SOME HELP ON THIS MY 1986 F150 5.0 E.F.I TRUCK HAS A PROBLEM,WELL I THINK SO?? WHAT IT DOES IS IF IT IS 90 DEGREES OUTSIDE AND I START THE TRUCK AT MY LUNCH BREAK THE RPM'S GO UP TO 2000 JUST LIKE IT WAS 10 DEGREES OUTSIDE AND IF I GIVE IT A LITTLE GAS JUST LIKE YOU WOULD DO A ELECTRIC CHOKE IT DIES DOWN AND SOMETIMES DIES ALL THEY WAY WHAT IS MY PROBLEM HERE I DON'T THINK MY TRUCK SHOULD HAVE TO SIT AND WARM UP FOR 5 MIN AFTER JUST 4 HRS OF SITTING WHEN IT'S 70-80 DEGREES OUTSIDE WHAT DO YOU'LL THINK I NEED SOME ADVICE HELP:bows:

First, please turn your caps lock off. :)

Okay... it could be a few things...

Idle screw messing up the TPS
EGR
Vac leak
O2 sensor

Do you have any codes?

Quote:

Originally posted by 86F15.0.E.F.I
yes code 84

Hrm, did you find out what that number was for?