if your intake is off the engine,and you can get in the intake ports with a small brass brush,Gumout carb spray is awesome,tryed all types of solvents,nothing close to Gumout........
Remove the intake manifold retaining bolts from your 1996 Chevy Astro Van. Remove the manifold gasket and clean the surface. Reverse the process to install the new intake manifold gasket.
Remove the intake manifold retaining bolts from your 1993 Mercedes-Benz manifold. Remove the old manifold gasket. Clean the surface and put the new gasket on.
I believe the code your getting is probably p0401 which is EGR system flow insufficient. Pull your EGR valve and clean the carbon off of it if it still gives that code you may have to pull the intake manifold and clean the EGR passages in it. I had that code in my wife's Buick and had to pull the intake because it was packed with carbon build up.
Remove the 1995 Oldsmobile Cutlass intake manifold retaining bolts. The manifold will come off. Remove the old gasket. Clean the surface. Put the new intake gasket and tighten the intake manifold retaining bolts.
diferential pressure sensor intake manifold plausibility
Right ontop of the starer. you can remove and clean but you probably are going to have to remove intake manifold and clean all the carbon. check engine on my 2000 Honda accord v6 came on. codes read not enough air flow, change egr valve. removed and it really wasnt dirty. Honda tech adviced to clean intake manifold. problem fixed.
Its at the rear of the engine in the intake manifold. Take the 2 bolts off that hold it and clean all of the carbon before installing the new one.
Between the intake manifold and the cylinder head.
between the head and intake manifold
remove intake manifold.
Remove the intake manifold retaining bolts on your 2003 Chevrolet Malibu. The manifold will come off. Remove the manifold gasket and clean the surface. Put the new manifold gasket on and reverse the process.
Under the intake manifold. where is the intake manifold!