Crankshaft sensor spacer.

Ok I am about to replace the wiring to my crankshaft sensor on a TD5 and while I am at it change the sensor (NSC 100790).
I see that some TD5 vehicles have a sensor spacer (NSJ 000010) some have no spacer what determines the fitting of a spacer?

Tim4x4 said:

Ok I am about to replace the wiring to my crankshaft sensor on a TD5 and while I am at it change the sensor (NSC 100790).
I see that some TD5 vehicles have a sensor spacer (NSJ 000010) some have no spacer what determines the fitting of a spacer?

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Spacer fitted with manual transmission.

wammers said:

Spacer fitted with manual transmission.

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wammers thank you for the information.
What would be the consequences of no spacer with manual transmission?

You sure? I havnt got a spacer fitted on my 90. Runs fine. The way I understood it was you fit the CPS if all works well then your good, if there are issues then you need the spacer?

bankz5152 said:

You sure? I havnt got a spacer fitted on my 90. Runs fine. The way I understood it was you fit the CPS if all works well then your good, if there are issues then you need the spacer?

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I always fit the spacer and see if the engine runs. try driving it rather than let it idle. If you are having issues with starting and intermittent misfires when driving then remove the spacer as the sensor is too far from the flywheel to give stable readings. If you use cheap pattern sensors It is possible for the sensor to contact the flywheel without the spacer fitted.

Shifty1962 said:

I always fit the spacer and see if the engine runs. try driving it rather than let it idle. If you are having issues with starting and intermittent misfires when driving then remove the spacer as the sensor is too far from the flywheel to give stable readings. If you use cheap pattern sensors It is possible for the sensor to contact the flywheel without the spacer fitted.

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I changed mine for a genuine unit about a year ago, still fine now, ,
never had a starting issue or misfires

Shifty1962 said:

I always fit the spacer and see if the engine runs. try driving it rather than let it idle. If you are having issues with starting and intermittent misfires when driving then remove the spacer as the sensor is too far from the flywheel to give stable readings. If you use cheap pattern sensors It is possible for the sensor to contact the flywheel without the spacer fitted.

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Great will do just as you say makes sense.

Spacer is fitted with manual transmissions NOT fitted with automatic transmissions. No other explanation needed.

wammers said:

Spacer is fitted with manual transmissions NOT fitted with automatic transmissions. No other explanation needed.

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Popped into my local main stealer and asked the question, "When do I fit a spacer to the crankshaft sensor"
Answer "When your TD5 is a manual gearbox"
Stuart the parts guru also looked at the build specification on my vin No and said "from new mine was fitted with a spacer"
Both the parts person and the technician agreed that ALL manual TD5's should have a spacer fitted to the base of the crankshaft sensor.

Don't want to hijack the thread but has anyone known one of these sensors pack up while the engine is running? started up my engine on Saturday morning and it ran for two or three minutes then it started to misfire and shake violently then packed up. can't get it to re start purged the fuel system checked things over with Nanocom but no go ordered a flywheel sensor and will try it when it arrives.

Yep. Mine died last year while entering a round about! Sputtered then dropped into limp home mode.
right in the middle

bankz5152 said:

Yep. Mine died last year while entering a round about! Sputtered then dropped into limp home mode.
right in the middle

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Oh so it kept on running after the sensor let go, mine coughed for a few seconds and shook violently then stopped so it might not be the flywheel sensor. If I turn the key it turns over coughs and blows out some dark grey smoke but just won't fire up.

Strange. Mine did run fine, for a time. Then died again, happened 3 times, new sensor no more problems!

wammers said:

Spacer is fitted with manual transmissions NOT fitted with automatic transmissions. No other explanation needed.

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I have just fitted a new CKP sensor (genuine LR) with spacer to a Defender 2001 TD5 with manual gearbox the engine would not start not even try to fire. Removed the spacer and it burst into life instantly, went for a drive and it runs well.
So wammers I think we need to add to your statement "spacer not fitted to automatic gearbox vehicles but the spacer is fitted to SOME manual gearbox vehicles".
I do not know how you discover if your manual gearbox vehicle needs a spacer other than doing what Shifty1962 said and this is what I did.

Shifty1962 said:

I always fit the spacer and see if the engine runs. try driving it rather than let it idle. If you are having issues with starting and intermittent misfires when driving then remove the spacer as the sensor is too far from the flywheel to give stable readings. If you use cheap pattern sensors It is possible for the sensor to contact the flywheel without the spacer fitted.

Click to expand...

Tim4x4 said:

I have just fitted a new CKP sensor (genuine LR) with spacer to a Defender 2001 TD5 with manual gearbox the engine would not start not even try to fire. Removed the spacer and it burst into life instantly, went for a drive and it runs well.
So wammers I think we need to add to your statement "spacer not fitted to automatic gearbox vehicles but the spacer is fitted to SOME manual gearbox vehicles".
I do not know how you discover if your manual gearbox vehicle needs a spacer other than doing what Shifty1962 said and this is what I did.

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That's interesting, I changed the clutch recently on my Defender TD5 manual and I noticed it did not have a shim under the sensor. I'm having a bit of a battle with mine at the moment and i have ordered a new sensor hope that will cure it.
By the way anyone know how thick the shim is ? I want to try it with and without so I may try to make one from plastic.

Just buy one they are about 90p

bankz5152 said:

Just buy one they are about 90p

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Fine I'll have two, Only problem is where ?

raywin said:

That's interesting, I changed the clutch recently on my Defender TD5 manual and I noticed it did not have a shim under the sensor. I'm having a bit of a battle with mine at the moment and i have ordered a new sensor hope that will cure it.
By the way anyone know how thick the shim is ? I want to try it with and without so I may try to make one from plastic.

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Measured 0.513mm thick Cost at main stealer £4.91

Tim4x4 said:

Measured 0.513mm thick Cost at main stealer £4.91

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Thanks that's great, if it's not too cold I will try and measure up and customise one to give 1.5 mm clearance. If not I will try to make one at standard.
Already checked a few places, island seem cheapest £4 + VAT + £5 postage.

raywin said:

Thanks that's great, if it's not too cold I will try and measure up and customise one to give 1.5 mm clearance. If not I will try to make one at standard.
Already checked a few places, island seem cheapest £4 + VAT + £5 postage.

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raywin I said 0.513mm just over half a millimetre aprox 20 thousands of an inch.