Rough running - Hall sensor problem
10-26-2005, 09:51 AM
#1
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Rough running - Hall sensor problem
My 964 C4 isn't running like it should. Especialy with low rpm and between 4000-5000 rpm. Problem is worse on full throttle. It doesn't have full power and I notice hickups. Problem exsists both on cold and warm engine (though it might be worse on a warm engine).
On the "Hammer" it showed: "Hallsignal unplausibel vorhanden". which translates (if I am not mistaken) that there is a problem with the Hall sensor and the problem is permanent.
Using the search-button showed many topics, but the conclusion is more or less: could be anything...
My question is: where should I begin troubleshooting?
On the "Hammer" it showed: "Hallsignal unplausibel vorhanden". which translates (if I am not mistaken) that there is a problem with the Hall sensor and the problem is permanent.
Using the search-button showed many topics, but the conclusion is more or less: could be anything...
My question is: where should I begin troubleshooting?
10-26-2005, 12:59 PM
#2
Nordschleife Master
Hiya Devils_son
Lots of people have had this and it most times is fixed
by finding the bad part or parts that are leaking the spark .
Id start by seeing if it will run on just one of the two ignition systems .
Will it run on #1 distributor alone ?
Will it run on # 2 alone ?
Have you looked at your motor in the dark to see sparks ?
Lots of people have had this and it most times is fixed
by finding the bad part or parts that are leaking the spark .
Id start by seeing if it will run on just one of the two ignition systems .
Will it run on #1 distributor alone ?
Will it run on # 2 alone ?
Have you looked at your motor in the dark to see sparks ?
10-26-2005, 05:38 PM
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Originally Posted by Indycam
Will it run on #1 distributor alone ?
Will it run on # 2 alone ?
Will it run on # 2 alone ?
10-27-2005, 09:44 AM
#6
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The Hall sensor in the distributor generates a cylinder reference signal for the DME so that the sequential injection works correctly.The motor will still run if this signal is corrupted or missing but not as well.
Could be worth checking that the signal is ok ?
Geoff
Could be worth checking that the signal is ok ?
Geoff
10-27-2005, 02:21 PM
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I had a similar problem with hall sensor error signal. I found out that if you have a bad sparkwire you will get such a reading. My lower plug wires were oil saturated and were shorting out. I changed out plug wires. Fixed the problem.