90coman

Yeah I did and it stays closed on start up. When I try to open it by hand it kills the truck.

Seemed to open and close just fine by hand.

Sorry I meant intake gasket. And also yes the EGR solenoid is what I am referring too. With everything hooked up it will not run without me giving it gas. And when I try to hold rpm it motor with surge up and down.

Put a new valve cover gasket on it and still no fix. I tested the TPS and the adjustment is right and it reads proper continuity. It still will only run with a vaccum line unhooked. I did notice that when I unhook the line on top of the vaccum tree that is threaded into the back of the intake and then hold my finger over the opening it will kill the motor. The vaccum line goes to the solenoid on the passenger side fender. Could the solenoid be my issue?

1990 with a 2.5 won’t run without the vaccum line on the MAP sensor unhooked. It will start up and then idle down and die. When I rev it up and try to hold RPM it will surge up and down. With the line unhooked it runs good but if I try to drive it doesn’t seem to have power. I replaced the sensor with a new one. And still no change I tested the MAP and it tests good. Anybody know of some things that can cause this. Thanks in advance.