[racer42]

What will correct my P1518 code( intake manifold runner control stuck open? Seafoam?

 

[pextor]

almost sounds like the SPI butterfly is stuck open

 

[racer42]

I have got 2 97 escorts with the same code, I just figured that it was carbon

 

[madmatt2024]

Either that or the IMRC motor is shot. The code basically means the IMRC motor is not returning to the closed position. You can actually watch it work if you rev the engine. You can probably remove the motor and try to turn the shaft with a pair of pliers, maybe that will break any carbon loose and free up the SPI valves.