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[BazaJT]

I now have a radiator fan temperature switch[the one immediately below top hose]this has come with a sealing washer on it which is fair enough.I also have the ecu sender that fits in the coolant bridge,this has come with a metal[?]washer which again is fair enough.To complete the set I also have the sender unit that also fits in the coolant bridge,this has come with no washer/seal at all.Should it have one?According to St.Haynes you should recover the seal[where fitted]so do all cars not have them?Could do with knowing whether I need one or not before I get it all apart to fit these new bits.Also according to St.Haynes the sender unit should be torqued up to18nm,is this critical[like the cam cover bolts]?Or is it a case of just making sure it's tight?

[Andy B]

... Also according to St.Haynes the sender unit should be torqued up to18nm,is this critical[like the cam cover bolts]?Or is it a case of just making sure it's tight?

bear in mind the coolant bridge is ally ...... so go easy 

[05omegav6]

iirc the coolant sensor doesn't have a seal...

[tidla]

Most old styley temp senders area tapered thread so a nip is good.

[BazaJT]

Ah,so would seem no seal needed then?Oh,and not going bonkers on the tightening.Cheers guys just need the weather to play ball either tomorrow or Sunday and we're good to go then

[Webby the Bear]

Are we talking about the ECT Sensir here?

If so a new washer can clearly be seen on my new ECT in the following guide . . .

http://www.omegaowners.com/forum/index.php?topic=113765.0

[polilara]

I now have a radiator fan temperature switch[the one immediately below top hose]this has come with a sealing washer on it which is fair enough.I also have the ecu sender that fits in the coolant bridge,this has come with a metal[?]washer which again is fair enough.To complete the set I also have the sender unit that also fits in the coolant bridge,this has come with no washer/seal at all.Should it have one?According to St.Haynes you should recover the seal[where fitted]so do all cars not have them?Could do with knowing whether I need one or not before I get it all apart to fit these new bits.Also according to St.Haynes the sender unit should be torqued up to18nm,is this critical[like the cam cover bolts]?Or is it a case of just making sure it's tight?

I think we talk about the dash meter sensor.

[Andy H]

Most old styley temp senders area tapered thread so a nip is good.

I would put a smear of sealant on the threads to be sure of getting a leak tight seal. Don't give it more than a 'nip' else the tapered sender will happily apply enough force to split the ally casting.

[BazaJT]

Just had a look at your guide Webby,while I've got one of those to go on[it's been too damn cold here for me to be stood at roadside fixing things today]It was the other one with the single wire that feeds dash gauge that I wasn't sure should have a washer/seal on it.As you say Haynes don't seem to state a torque figure for the one in your guide,but they do for the other one and I just wondered if this was a "critical"as with the cam cover bolts.

[Webby the Bear]

Just had a look at your guide Webby,while I've got one of those to go on[it's been too damn cold here for me to be stood at roadside fixing things today]It was the other one with the single wire that feeds dash gauge that I wasn't sure should have a washer/seal on it.As you say Haynes don't seem to state a torque figure for the one in your guide,but they do for the other one and I just wondered if this was a "critical"as with the cam cover bolts.

Ah ok mate

I should go with snug and leave it