Hall sensor error
#1
Burning Brakes
Thread Starter
Hall sensor error
Guys - need the story for the hall sensor error.
Car seems to have a miss fire at certain speeds.
Checked the cpu and durametric says we have a hall sensor error.
I've checked the wires and plugs - all measure good and look good.
Distributor caps and rotas in good condition.
Whats the process to check for the 5v from the plug? Engine running or just in the on position?
Has anyone had a similar problem where they had some miss firing and turned out to be the hall sensor?
Is there a replacement sensor available? Or do you need to get it repaired or you need to get an entire new distributor unit?
Thanks in advance.
Car seems to have a miss fire at certain speeds.
Checked the cpu and durametric says we have a hall sensor error.
I've checked the wires and plugs - all measure good and look good.
Distributor caps and rotas in good condition.
Whats the process to check for the 5v from the plug? Engine running or just in the on position?
Has anyone had a similar problem where they had some miss firing and turned out to be the hall sensor?
Is there a replacement sensor available? Or do you need to get it repaired or you need to get an entire new distributor unit?
Thanks in advance.
#2
Basic Sponsor
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Guys - need the story for the hall sensor error.
Car seems to have a miss fire at certain speeds.
Checked the cpu and durametric says we have a hall sensor error.
I've checked the wires and plugs - all measure good and look good.
Distributor caps and rotas in good condition.
Whats the process to check for the 5v from the plug? Engine running or just in the on position?
Has anyone had a similar problem where they had some miss firing and turned out to be the hall sensor?
Is there a replacement sensor available? Or do you need to get it repaired or you need to get an entire new distributor unit?
Thanks in advance.
Car seems to have a miss fire at certain speeds.
Checked the cpu and durametric says we have a hall sensor error.
I've checked the wires and plugs - all measure good and look good.
Distributor caps and rotas in good condition.
Whats the process to check for the 5v from the plug? Engine running or just in the on position?
Has anyone had a similar problem where they had some miss firing and turned out to be the hall sensor?
Is there a replacement sensor available? Or do you need to get it repaired or you need to get an entire new distributor unit?
Thanks in advance.
__________________
Loren
Systems Consulting - Automotive Electronics
Specializing in Porsche cars
http://www.systemsc.com/
Loren
Systems Consulting - Automotive Electronics
Specializing in Porsche cars
http://www.systemsc.com/
#3
Rennlist Member
When I rebuilt my distributor, the Hall effect sensor was something I couldn't find a replacement for. Most seem to be 5V or less. You're right its a very robust semiconductor but even so, 25 years of faithful service is very good for a silicon devices in automotive use case. Does anyone have a line of 12V Hall effect devices? There's got to be something out there with Bosch or others.
#4
Rennlist Member
To OP, the Hall effect sensor is a transistor that responds to magnetic fields, as such it needs to be powered and then subjected to a varying magnetic field. I think you could only test it in use in a running engine by looking at the output on a scope. Maybe with ignition on you could wiggle some ferrous metal in the flux gap and see a voltage variation but it's not a simple ohmmeter resistance check.
If we knew the structure we could check for diode drops in the right polarity but it's a black box from the electrical diagrams.
If we knew the structure we could check for diode drops in the right polarity but it's a black box from the electrical diagrams.
#5
Burning Brakes
Thread Starter
New Hall sensor arrived. Distributor disassembled.
Anyone know how to get the metal plate that the hall sensor is mounted on removed?
Anyone know how to get the metal plate that the hall sensor is mounted on removed?
#6
Where did you get this HALL sensor separately?
My mechanic suspected that same issue because I have occasional misfires too (they've disappeared for now though)
I called and you can't get that part separately from Porsche. You have to buy the whole distributor.
My mechanic suspected that same issue because I have occasional misfires too (they've disappeared for now though)
I called and you can't get that part separately from Porsche. You have to buy the whole distributor.
#7
Burning Brakes
Thread Starter
I got two of them - one for spare.
https://www.sonnecy-shop.com/en/hall...honeywell.html
Link posted by boxsey911 on 964 forum about 9 years ago.
Thanks boxsey911.
https://www.sonnecy-shop.com/en/hall...honeywell.html
Link posted by boxsey911 on 964 forum about 9 years ago.
Thanks boxsey911.
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#8
Thank you.
Ordered one.
Ordered one.
#9
Burning Brakes
Thread Starter
Anyone have any tips on how to remove the hall sensor plate from the bottom plate?
Need to get this off some I can remove the old hall sensor.
I'm thinking that it has been pressed on but can't figure out a way to get it off without bending the metal.
Thanks in advance.
Need to get this off some I can remove the old hall sensor.
I'm thinking that it has been pressed on but can't figure out a way to get it off without bending the metal.
Thanks in advance.
#11
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Most waste time and money replacing the Hall Sensor.
The following users liked this post:
Coleman (06-01-2023)
#12
Burning Brakes
Thread Starter
Sorry for late reply. Yes - it did the job and error has gone. Has not given any errors since.
I also changed the bearings at the same time as the tech said they where perished.
Didn't cost much but took some time to complete.
Now no error and piece of mind.
I also changed the bearings at the same time as the tech said they where perished.
Didn't cost much but took some time to complete.
Now no error and piece of mind.
#13
I have the same issue on my 96mod TT, how did you replace the hall sensor on the metal plate?
Best regards
Sondre
#14
Burning Brakes
Thread Starter
Hi Sondre
Happy new year. Hope all is well.
I spend hours trying to get the plate off. It's pressed on and seized.
I ended up finding a pro who rebuilds these things and had them replace the hall sensor at the same time.
The entire unit was serviced - bearings changed - etc.
It's time to do it - 30 year old car.
Happy new year. Hope all is well.
I spend hours trying to get the plate off. It's pressed on and seized.
I ended up finding a pro who rebuilds these things and had them replace the hall sensor at the same time.
The entire unit was serviced - bearings changed - etc.
It's time to do it - 30 year old car.
#15
Hi Sondre
Happy new year. Hope all is well.
I spend hours trying to get the plate off. It's pressed on and seized.
I ended up finding a pro who rebuilds these things and had them replace the hall sensor at the same time.
The entire unit was serviced - bearings changed - etc.
It's time to do it - 30 year old car.
Happy new year. Hope all is well.
I spend hours trying to get the plate off. It's pressed on and seized.
I ended up finding a pro who rebuilds these things and had them replace the hall sensor at the same time.
The entire unit was serviced - bearings changed - etc.
It's time to do it - 30 year old car.