88-mj-petersen

I didnt wiggle the harness going behind the map sensor on the firewall tho. Completely forgot about that one.

I did do that. Thats how i found the bad crimp in the harness going into the c101.

I did check the manifold bolts once befor but if i remember right i did it with the truck hot. I havnt touched the butterfly stop screw but i could check to be sure that it is were it needs to be. Setting the tps i took voltage from the flat one. Probed A and B got about 4.90. So i probed B and C and set it about 0.84.

Forgot to add. Iv done a full tune up about 4000 miles or less ago( plugs,wires,cap,rotor,fuel filter, and air filter). Also replaced the fuel pressure regulator and cleaned the fuel pump ground behind the tail light.

I got a 88 cheif 4.0 manual 4x4. Has a bit of a high idle(anywere betweer 1000 and 1250) and ita random, hot or cold but mostly hot. Iv replaced the vaccum harness, replaced IAC, cleaned throttle body, set the tps cleaned the c101, cleaned the ground on the dip stick and on the firewall, replaced 1 factory crimp going to the c101. Maybe a few things i forgot The battery ground is on the dip stick stud but I'm wouldnt think that would make a diffrence. I'm thinking its t maybe a bad intake gasket. Is there a way to test that without spraying carb cleaner or anything everywere? Or any other ideas on what to check?