LANDROVER FREELANDER 2 SD4 Automatic - Crank Shaft Sensor keeps failing

Hi

I had the crank shaft sensor replaced on my FL2 a few months ago after breaking down and home diagnostics showing crank shaft sensor fault. It has been ok for a while but broke down again today with the same fault. I called the AA and they replaced the sensor (I had to pay for the part) which cleared the fault and got me back on the road. AA guy had just driven off when my car started to shudder but didn't cut out as it had earlier, the juddering improved after a few miles and I thought I was ok. However after switching off the engine to pop into the shop it wouldn't start again. AA came out again and thinking the sensor may have been faulty went a sourced an new one and installed it. This time it didn't work, had to be recovered home. The AA guy suggested it might be a problem with the wiring back to the ECU or could be something wrong with the pully on the back of the crankshaft (sorry not very technical). He said I might want to look at getting a mobile auto electrician to come and have a look.

Just wondering if anyone who has had any similar issues can offer advice? Thanks in advance

The plug is likely at fault. I replaced mine after several sensor failures in short succession. I found the spring tension on the plug pins wasn't good enough for a firm connection. This seems to cause an issue within the sensor itself, causing it to fail early. The early warning signs seems to be a misfire or drop-out under acceleration, but not always.
Sine replacing the plug, fitting a new OE sensor, and adding dielectric grease on installation , there has been no repeat failure.

Nodge68 said:

The plug is likely at fault. I replaced mine after several sensor failures in short succession. I found the spring tension on the plug pins wasn't good enough for a firm connection. This seems to cause an issue within the sensor itself, causing it to fail early. The early warning signs seems to be a misfire or drop-out under acceleration, but not always.
Sine replacing the plug, fitting a new OE sensor, and adding dielectric grease on installation , there has been no repeat failure.

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Hi John.
Would you say that after market crank sensors are more likely to fail than genuine (LR056028) ones, or is there a good medium out there.

Arctic2 said:

Hi John.
Would you say that after market crank sensors are more likely to fail than genuine (LR056028) ones, or is there a good medium out there.

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There's evidence that cheap ebay sensors of unknown brand do fail quickly.
I use premium brands myself.

Nodge68 said:

There's evidence that cheap ebay sensors of unknown brand do fail quickly.
I use premium brands myself.

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John thanks for quick reply do you have any link for decent brands, i have seen these but looks expensive,
(https://www.ebay.co.uk/itm/126063433839) wow







Any good reports of the ones above, by anyone whom have used any.

I used a febi when I replaced the plug.
It's been fine since then.

John thank you now so ordered to add to my spares just in case