coolant Temperature Sensor - HELP!
Discussion
Evening All,
Just tried to replace the engine temperature sensor (has some shunting problems so I thought I'd rule this out as a possible cause before I start hunting else where)
Bought a new Lucas part from a reputable TVR spares shop and tried to fit it this afternoon.
It took some force to break the old sensor free but then it came out OK. I checked the threads and no sign of aluminium threads on the sensor, so far so good.
It was stuck in with some glue/sealant.
The new one went in OK but I couldn't even get it finger tight with the socket. It just never got there.
First thought was 'Oh C**p, I've stripped the thread in the manifold'
so I carefully took it out and had a look.
Threads are all fine!!
I gripped the probe part of the new sensor in a vice (with some rubber to protect it) and the plastic cover part simply rotates on the brass sensor body!!
Anyone else had this happen??
I'll get a replacement next week.
Should I seal the new sensor back in place and if so what with?
Cheers,
Dave
Just tried to replace the engine temperature sensor (has some shunting problems so I thought I'd rule this out as a possible cause before I start hunting else where)
Bought a new Lucas part from a reputable TVR spares shop and tried to fit it this afternoon.
It took some force to break the old sensor free but then it came out OK. I checked the threads and no sign of aluminium threads on the sensor, so far so good.
It was stuck in with some glue/sealant.
The new one went in OK but I couldn't even get it finger tight with the socket. It just never got there.
First thought was 'Oh C**p, I've stripped the thread in the manifold'
so I carefully took it out and had a look.Threads are all fine!!
I gripped the probe part of the new sensor in a vice (with some rubber to protect it) and the plastic cover part simply rotates on the brass sensor body!!
Anyone else had this happen??
I'll get a replacement next week.
Should I seal the new sensor back in place and if so what with?
Cheers,
Dave
Hi.
I've had exactly the same problem with the coolant sensor. Bought two genuine Lucas parts and on both occasions the plastic "nut" part has ended up spinning with virtually no pressure.
If you look on ebay you will see that sensors are available that have a brass hexagon, I think they are "bearmach" parts. I have also seen these on a TVR parts website but can't remember which one, sorry.
These parts are MUCH better and you can tighten them correctly too. I felt that I had stripped the thread in the housing at first! I took one of the plastic ones apart and all that holds them together are two small slots in the brass, no wonder they come apart.
Hope this may help.
Regards Chris.
I've had exactly the same problem with the coolant sensor. Bought two genuine Lucas parts and on both occasions the plastic "nut" part has ended up spinning with virtually no pressure.
If you look on ebay you will see that sensors are available that have a brass hexagon, I think they are "bearmach" parts. I have also seen these on a TVR parts website but can't remember which one, sorry.
These parts are MUCH better and you can tighten them correctly too. I felt that I had stripped the thread in the housing at first! I took one of the plastic ones apart and all that holds them together are two small slots in the brass, no wonder they come apart.
Hope this may help.
Regards Chris.
t plastic nut ones Have had similar problem with ECU temp sensor. One that came out was SAGEM 73355 8TT ( Google says its a 1998 LAND RANGE ROVER P38 SAGEM 73355 MANIFOLD TEMPATURE SENSOR). One that went in was Lucas SNB802, which is standard recommendation. Threads appear OK. However, that wouldn't tighten beyond figer tight and the plastic "nut" is not slipping. (tried it in the vice) so SAGEM sensor went back in. Still can't quite work out the thread issue...
However, I then spotted that the vacuum advance retard pipe had become dislodged. Refitting this cured all the rough running problems usually associated with dodgy ECU temp sensor.... Recommend you double check the vacuum pipe too.
However, I then spotted that the vacuum advance retard pipe had become dislodged. Refitting this cured all the rough running problems usually associated with dodgy ECU temp sensor.... Recommend you double check the vacuum pipe too.
Gassing Station | Chimaera | Top of Page | What's New | My Stuff