1998 tauris
tram
11-27-2005, 04:14 PM
does any one know any thing about a controller called imrc intake manifold runner control on 3.ol dohc engine thanks ted
shorod
11-27-2005, 09:33 PM
What specifically are you wanting to know? I know my 1998 Taurus SHO has the IMRC system, and the 2.5L Duratec in the Contour has the IMRC, as did my old '93 Taurus SHO.
Following is the description of the 1998 Taurus IMRC from the Ford service manual:
"The air induction system improves engine performance by using the intake manifold runner control (IMRC) assemblies as follows:
l The intake manifold (9424) has two runners per cylinder, feeding each of the intake parts in the cylinder heads (6049).
l The IMRC assemblies are located between the intake manifold and cylinder heads, providing two air passages for each cylinder.
l One air passage is always open and the other passage switches from closed to open by means of a valve plate.
-- Below 3000 rpm, this valve plate is closed to improve low-speed and cold engine performance.
-- Above 3000 rpm, this valve plate opens to improve high-speed engine performance.
The valve plates are opened and closed by the IMRC deactivation motor, which is controlled by the powertrain control module (PCM) (12A650)."
-Rod
Following is the description of the 1998 Taurus IMRC from the Ford service manual:
"The air induction system improves engine performance by using the intake manifold runner control (IMRC) assemblies as follows:
l The intake manifold (9424) has two runners per cylinder, feeding each of the intake parts in the cylinder heads (6049).
l The IMRC assemblies are located between the intake manifold and cylinder heads, providing two air passages for each cylinder.
l One air passage is always open and the other passage switches from closed to open by means of a valve plate.
-- Below 3000 rpm, this valve plate is closed to improve low-speed and cold engine performance.
-- Above 3000 rpm, this valve plate opens to improve high-speed engine performance.
The valve plates are opened and closed by the IMRC deactivation motor, which is controlled by the powertrain control module (PCM) (12A650)."
-Rod
Automotive Network, Inc., Copyright ©2026