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Registered
Join Date: Jan 2005
Location: In a dumpster behind Albertson's in Los Angeles County
Posts: 2,132
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Test values
anyone out there have the test points and values for a stock Turbo Air Flow Meter?
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1989 944 NA Glacier Blue - SOLD IT 1989 944 S2 Alpine White T-Boned (totaled) by a lady dressed in a CLOWN costume (RIP  ) Apr 89 - Mar 081988 944 Turbo S Silver Rose Metallic, K27/6, Vitesse MAF, Tial 38mm DP WG Semper Fi Last edited by 89-944NA; 06-28-2010 at 06:55 AM.. |
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06-28-2010, 06:37 AM
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All Spooled Up
Join Date: May 2009
Location: Between NE and Central PA
Posts: 2,516
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The test points are pins 1,2,3, and 4. Pin 5 is unused (it isn't even there). Pin 1 is the IAT sensor output, and mine reads about 2.3K ohms @ 74 degrees F (relative to ground, pin 4). Pin 2 is the AFM output signal, and mine reads about 50 ohms when closed, and about 800 ohms, when fully open (also relative to ground, pin 4). Pin 3 is +5 volts in, to the AFM. Pin 4 is ground. There you have it. Hope that helps you out.
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>gray 89 951S - K27/8, MAF, 3" intake, 3" exhaust w/separate waste pipe, 55# inj, late cam; >red 87 924S - chip, K&N, punched-out cat&muffler >black 80 924 - (sold) >maroon 77 924 - auto (sold) |
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06-28-2010, 02:55 PM
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All Spooled Up
Join Date: May 2009
Location: Between NE and Central PA
Posts: 2,516
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Let me add that, since mine is no longer on the car (due to MAF conversion), I really can't provide you with the expected voltage readings, when hooked up and ignition is on. But If my recollection is correct, pin 2 should read somewhere below 0.1 volts, when the door is closed, and somewhere above 4.5 volts, when fully open.
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>gray 89 951S - K27/8, MAF, 3" intake, 3" exhaust w/separate waste pipe, 55# inj, late cam; >red 87 924S - chip, K&N, punched-out cat&muffler >black 80 924 - (sold) >maroon 77 924 - auto (sold) |
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06-28-2010, 03:06 PM
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1988 Porsche 944 Turbo S Limited Edition
