Temp. gauge

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micktheshed

Well-known member
Joined
Feb 6, 2011
Messages
313
Advice required from those that have passed this way before me.... 2004my 3L Terrano Auto……

What's the best place to tap into the coolant to fit a temperature gauge?
Reason being that the standard one is a waste of time as I need something that actually tells the temperature rather than just pacifies the driver LOL.
I get the impression that my gauge shows 'normal' between about 50C & anything too hot for my liking!. What good is that?

What brought this on? Kenlowe fan 'thermostatic unit' has gone tits-up so fan is on all the time unless I pull the fuse. 2y & 1m old (8.5K) so not impressed, except by Kenlowe's response: a replacement unit in in the post FOC. Nice one Kenlowe! Restores my faith somewhat.

I also intend fitting an oil pressure gauge so also need advice on that.

Over to you……
 
Temp gauge I can't help with i'm afraid bud :nenau

But oil pressure gauge! :thumb2

Easiest place to fit it is where the low oil pressure switch is located, passenger side of engine, top half, underneath the turbo and behind the oil filter holder.

To unscrew the oil pressure switch you'll need either a 26mm long socket or a 26mm ring spanner with the handle cut down to about 100mm. I believe you need to have the oil pressure switch plugged in to stop the ECU having a fit (I know she'll still start with the high pressure unplugged but apparently the low pressure switch is different) so best idea is to get a T-piece adaptor. You need one with a 1/8 BSP male end to go where the switch currently is and then a 1/8 BSP female end for the switch and a female end of the required thread for the oil pressure sender. Last item on the list apart from the gauge and sendor is a tube of high temp thread sealant or high temp pipe thread etc. Obviously you need spare wire for wiring up the gauge but I'll just deal with the engine bit just now...

Drain and remove the oil filter and filter housing before you start as it'll give you more space to work with. Don't worry about WD40 etc on the threads as it'll do stuff all since the switch will be loctited into the turbo banjo bolt.

When you unscrew the oil sensor it's likely that the turbo banjo bolt will unscrew instead so be careful as there's a special metal gasket on the banjo bolt that will disappear into the bowels of the engine compartment if you don't catch it when you're unscrewing things. Just feel under and along the pressure switch and banjo bolt, towards the engine, and you should feel it there. If the banjo bolt comes out with the pressure switch just stick the banjo bolt in a vice and whack a spanner on the switch.

Refitting is pretty easy, just refit the banjo bolt (and gasket) if it came out and tighten to the correct torque. Once the banjo bolt is in then fit the t-adaptor, sendor and pressure switch using the pipe thread or liquid thread sealant on the threads, then refit the oil filter.

Find a rubber cable grommet in the firewall to pass the sendor wire through, if it's anything like the Trol you'll need to pierce a hole in the rubber, just mind the cables!

Any queries let me know bud!
 
Temp gauge I can't help with i'm afraid bud :nenau

But oil pressure gauge! :thumb2

Easiest place to fit it is where the low oil pressure switch is located, passenger side of engine, top half, underneath the turbo and behind the oil filter holder.

To unscrew the oil pressure switch you'll need either a 26mm long socket or a 26mm ring spanner with the handle cut down to about 100mm. I believe you need to have the oil pressure switch plugged in to stop the ECU having a fit (I know she'll still start with the high pressure unplugged but apparently the low pressure switch is different) so best idea is to get a T-piece adaptor. You need one with a 1/8 BSP male end to go where the switch currently is and then a 1/8 BSP female end for the switch and a female end of the required thread for the oil pressure sender. Last item on the list apart from the gauge and sendor is a tube of high temp thread sealant or high temp pipe thread etc. Obviously you need spare wire for wiring up the gauge but I'll just deal with the engine bit just now...

Drain and remove the oil filter and filter housing before you start as it'll give you more space to work with. Don't worry about WD40 etc on the threads as it'll do stuff all since the switch will be loctited into the turbo banjo bolt.

When you unscrew the oil sensor it's likely that the turbo banjo bolt will unscrew instead so be careful as there's a special metal gasket on the banjo bolt that will disappear into the bowels of the engine compartment if you don't catch it when you're unscrewing things. Just feel under and along the pressure switch and banjo bolt, towards the engine, and you should feel it there. If the banjo bolt comes out with the pressure switch just stick the banjo bolt in a vice and whack a spanner on the switch.

Refitting is pretty easy, just refit the banjo bolt (and gasket) if it came out and tighten to the correct torque. Once the banjo bolt is in then fit the t-adaptor, sendor and pressure switch using the pipe thread or liquid thread sealant on the threads, then refit the oil filter.

Find a rubber cable grommet in the firewall to pass the sendor wire through, if it's anything like the Trol you'll need to pierce a hole in the rubber, just mind the cables!

Any queries let me know bud!

Thanks for the blow-by-blow instructions Barrbeast, all I need now is the nerve to get stuck-in & do it LOL.
 

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