WTB: cam position "Hall Sender"
10-29-2009, 03:36 PM
#1
Racer
Thread Starter
WTB: cam position "Hall Sender"
Looking for a good used (or extra?) camshaft position sending unit, aka "Hall Sender," P/N 944.606.170.02.
I have an intermittent error code according to the "blink test," and the connector is brittle and cracking. I can get a new one at Paragon for $120 + S/H, but I'm hoping somebody may have one laying around.
I have an intermittent error code according to the "blink test," and the connector is brittle and cracking. I can get a new one at Paragon for $120 + S/H, but I'm hoping somebody may have one laying around.
10-30-2009, 01:16 PM
#4
Addict
Rennlist Member
Rennlist Member
If you don't mind a little (very related) hijack... I have an S2 which seems to use the same sensors (Hall for the cam and a single reference for the flywheel). What is the function of each of these vs. the dual flywheel sensors of the 951's? Where does the ECU get TDC from?
Thanks!
Thanks!
10-31-2009, 05:17 PM
#5
Racer
Thread Starter
It's a cam position sensor.
I haven't learned about the Porsche ECU as well as others, particularly Mopar/Jeep, on which vehicles (OBD-II) the camshaft position sensor is also built into the distributor (or instead of the distributor, if individual ignition coils are used). It references the rotational position of the cam in order to signal the ECU which cylinder is at TDC in compression, thus enabling sequential opening of the fuel injectors according to the firing order of the cylinders.
I don't know if this is the same on the 968. I know that when Jeep started using a cam position sensor ('91 or '92), their MPFI system went from being a "batch fire" to "sequential fire" of the injectors, and this seems to be the difference common to systems with/without a cam position sensor.
I haven't learned about the Porsche ECU as well as others, particularly Mopar/Jeep, on which vehicles (OBD-II) the camshaft position sensor is also built into the distributor (or instead of the distributor, if individual ignition coils are used). It references the rotational position of the cam in order to signal the ECU which cylinder is at TDC in compression, thus enabling sequential opening of the fuel injectors according to the firing order of the cylinders.
I don't know if this is the same on the 968. I know that when Jeep started using a cam position sensor ('91 or '92), their MPFI system went from being a "batch fire" to "sequential fire" of the injectors, and this seems to be the difference common to systems with/without a cam position sensor.
