1974 Porsche 914 2.0L

VIN 4742902433 Plates 479 JOQ

engine GC 002880 (from a 1975 914, VIN 4752909073)

ECU 280 000 052 

Air temp sensor ts1 183 ohms @ 90F 

fuel injection

fi 1: 2.7 ohms 
fi 2: 2.4 
fi 3: 2.7 
fi 4: 2.9 




ts2 cylinder head temp: 1.25 kohms @ 90F 

Air filter Mahle LX234

Auxiliary Air Valve: 280 140 007. Cold resistance: 15 Ohms, open at cold start

History

Date	Description
Apr 2010	Engine lid seal
Dec 2009	Wheel centre caps, Coverlay dash cover
Jul 2009	Accelerator pedal
Jun 2009	Interior light, 2x window cranks, clutch/brake pedal pads, targa roof cups, windscreen washer jets, door lamp switch gaskets
Jun 2009	Purchased from James Thorusen
Nov 2004	New battery
Oct 2004	Engine compartment seal, rear trunk seal
Aug 2004	MAACO paint, Light Ivory $500
Apr 2000	Alternator
Mar 2000	Voltage regulator
Jan 2000	Weather seal, front trunk
Oct 1999	Wilwood Adjustable Proportioning Valve
Sep 1999	New windshield, windshield seal, clips, spacers. Engine lid seal at rear window
Jun 1999	Defrost parts
May 1999	Rebuilt speedometer, Fuel pump
Nov 1998	New clutch
Sep 1998	Cylinder Head Temp. Sensor
Oct 1997	New wheels
Jul 1997	Rear calipers, flywheel O-ring, dockplate, air deflector, 8 push rod seals
Jun 1997	6/28 New engine # GC 002880 from '75 914 VIN # 475290973, bought from George Kimmel
May 1997	New plugs. Valve cover gasket.

Deceleration Valve

Deceleration Valve 280 160 108

Test: pull vacuum on control port (small bore tube) whilst trying to blow through one of the other ports. Note vacuum at point where blowing is possible: should be around 17in Hg. Check.

MPS

Type 0280 100043

MPS primary 96 ohms
MPS secondary 1.4 kohms

I just tested my (working) 043 MPS and obtained numbers: 1.03H, 0.92H and 0.62H at 0in. Hg, 4 in. Hg and 15 in. Hg. (Paul Anders has 1.39, 1.18 and 0.71 for the 043.) My elevation is about 864ft, so around 730 Torr and the correction to Paul's numbers would be 730/723 - hardly any difference.

I used a very good TES multimeter that is capable of measuring up to 40H. Another check would be to put a capacitor in parallel, and frequency sweep the circuit for a maximum, and calculate the implied inductance. Perhaps I'll do that (With a 150nF capacitor, I think the resonant frequency would be around 400Hz - and would change with vacuum - this might make a novel electronic musical instrument to suck and blow!)