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gscaesar · 04-10-2009, 01:58 PM

I cleaned my MAF today with CRC Mass Air Flow Sensor Cleaner ($7 at Autozone). Definately had a film of oily residue on the screen, and it looked like some residue on the hot wire itself. Car ran beautifully after I cleaned with the spray, let it dry, and put it back together. I checked my idle with the procedure from the Factory Service Manual (pgs 33-35, where you get the car warmed up, turn off engine, unplug the TPS, then restart - rev - place in Neautral, rev, idle, and check ignition timing = 15 and idle = 650+/- 50). Last time I did that, I stalled constantly during the steps when the TPS was unplugged - I had to give throttle constantly to keep from stalling. Now, after cleaning the MAF, it never stalled.

The real test will be the next 1-2 weeks of driving. If I can make 150 miles of city driving without stalling, then I will know it is fixed.

Feeling good about this one. (Though I also felt good after cleaning the IACV, replacing the PCV, replacing the fuel filter, fixing the oil leak on the O2 sensor, fixing a broken breather hose, cleaning the throttle body, taking it to a mechanic, taking it to the Nissan dealer, etc etc .... darn intermittent problems).

Greg

04-10-2009, 01:58 PM	#42
gscaesar Junior Member 96 Maxima GLE Join Date: Jan 2007 Location: Houston TX iTrader: (0) Posts: 15	Cleaned MAF - So far, so good I cleaned my MAF today with CRC Mass Air Flow Sensor Cleaner ($7 at Autozone). Definately had a film of oily residue on the screen, and it looked like some residue on the hot wire itself. Car ran beautifully after I cleaned with the spray, let it dry, and put it back together. I checked my idle with the procedure from the Factory Service Manual (pgs 33-35, where you get the car warmed up, turn off engine, unplug the TPS, then restart - rev - place in Neautral, rev, idle, and check ignition timing = 15 and idle = 650+/- 50). Last time I did that, I stalled constantly during the steps when the TPS was unplugged - I had to give throttle constantly to keep from stalling. Now, after cleaning the MAF, it never stalled. The real test will be the next 1-2 weeks of driving. If I can make 150 miles of city driving without stalling, then I will know it is fixed. Feeling good about this one. (Though I also felt good after cleaning the IACV, replacing the PCV, replacing the fuel filter, fixing the oil leak on the O2 sensor, fixing a broken breather hose, cleaning the throttle body, taking it to a mechanic, taking it to the Nissan dealer, etc etc .... darn intermittent problems). Greg