Quote:
Originally posted by chrisw
The fuel pressure is good. I unplugged the MAS as you suggested and the engine will run in fail safe mode. I plug the connector back in and the engine dies. I still get no error code out of the ECM in mode 3. But mode 2 does give a green light. If the MAS is bad shouldn't I get an error code in mode 3?
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Those older max's alot of times wont ever give a code to you , If it runs fine unplugged (idles) And it doesnt idle plugged in it needs a MAS ,Does the airbox have a bunch of junk d, dirt , rust in the bottom underneath the Air filter ? Is there a black stream coming from the hole in the side of the air box inside ?