Check for a broken bushing for the IMRC - intake manifold runner control. Do you know what this is ?
P2004 P2006 Intake Manifold Runner Control IMRC Function and Diagnostics
SOURCE: 1996 Ford Taurus Chugging MAF
You need to check for an intake leak, use a can of carb spray and spray around the top of the engine, if a leak is there the engine will change speed when you get near the leak with the spray.
Remember a sensor trouble code does not mean the part is bad, it means there is a problem with the signal from that sensor, it can be the sensor or the wiring to name a few. For instance a bad injector can give you a O2 sensor code.
SOURCE: 1976 Gran Torino motorcraft 2150
Are you sure your idle ports ( size of pinhole) in carb aren't plugged with something? What happens if it starts to die, and you give it a quick squirt of WD-40 , down throat of carb?
SOURCE: 92 mpv 3 liter loses injector pulse at @ 2000rpm
what it seems to me if your losing injector pulse is
-crank sensor
- or communication BUS between the ECU/PCM
-why crank sensor because it gives a signal for when that tells the PCM when
it should send fuel
-BUS communication because if its not getting a good signal then it doesn't know where
the crank is in position to the camshaft
SOURCE: CLEANING THE MAF SENSOR ON MY '99 INTRIGUE
You don't clean them, you get a new one. Usually if it's the MAF, it'll start and die, start and die. If your's is stalling, it'll be the idle air control valve, or the fuel filter, or the idle control system, or a vacuum leak at the intake or vacuum hoses. Good luck.
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