1987 Pathfinder 4X4 3.0 engine has black smoke and quits run

1987 NISSAN PATHFINDER
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RSTEVE61
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My Nissan dies shortly after starting. checked onboard computer code 13 for Mass Air Flow sensor. Replace engine temp sensor, 02 sensor and water temp sensor. I can't seem to locate a vaccum diagram on this vehicle so I'm 100% sure all the lines are correctly connected. Is there anyway to test this air flow sensor as it is very pricey? I bought this vehicle as a project and it's been a nightmare! Any help greatly appreciated. Please send diagram to [email protected]. This vehicle has a replacement motor so I'm sure of the miles over 200000 on odometer
Jan 30, 2007 at 9:57 PM
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KIN CHAN
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yes...either test it with a good known unit or use an oscilliscope and chk the wave form but scope are pretty professional tools which cost a lot and require experience to use and intrepret .. chk repair manual on this site...u should be able to get vac diagram
Feb 22, 2007 at 10:26 PM