NISSAN ALTIMA ENGINE PROBLEM
1997 Nissan Altima
I have a 1997 Nissan ALtima with 97,000 miles, 2.4 liter engine. It will run for a while - as long as an hour then it will simply buck once or twice and stall. If you try to keep it running by putting it in neutral and pump the gas to keep it going it will still stall. If you try to start it immediately, it won't start, but if you wait a couple of minutes - 1 or 2 it starts right up and runs again for anywhere from 10 minutes to an hourr than it does it again. Fuel pressure is right where it should be, the distributor is new (the old one had oil in it), the fuel pump is new, the fuel filter is new. Air filter, rotor and plugs are all new. The MAF seems to be operating properly, but I cleaned it anyway (CRC MAF Cleaner). I started to check the EGR system. THe EGR Back Pressure Transducer leaks down when I put vacuum on one of the top lines and blow into the bottom line with the other top line plugged. I'm going to replace it as it shouldn't leak down. When I tested the EGR Control Solenoid Valve, the Chiltons Repair Manual indicated that air should pass freely through ports A & B with the electrical harness removed (A&B being the two ports on one side). With the harness connected and battery voltage supplied, Chiltons says air should not pass freely between A&B, but should pass freely between A & C which are on opposite sides of the valve body. However, the valve on my ALtima operates just the opposite - could this be a misprint in the manual? What else do you think could cause the symptoms? Only once did the Check Engine light come on - it was for the knock sensor. I reset the light and it hasn't come on again since.
May 12, 2007.
May 12, 2007.
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