Coolant dump

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Post by scimjim » Mon Apr 16, 2018 7:00 pm

I would expect a standard setup to put the fan on a bit before it got to 3/4. The fan sensor is in the stat housing so I’d check it hasn’t come loose first, then check the fan fuse and finally test the circuit by shorting the plug on the sensor.

Another thought, is the pressure cap sealing properly (seal and mating surfaces okay)?


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Post by philhoward » Mon Apr 16, 2018 7:23 pm

That sounds about the point the fan should have kicked in? Just over half way from memory.


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Post by Stoddy » Mon Apr 16, 2018 7:52 pm

Thanks Jim and Phil. I've been out to check and there is no fuse fitted so I'll get one in tomorrow. That would explain why the fan didn't come on There are two sensors in that area. I replaced the one in the thermostat housing when it was off as a precaution as I don't want to take the housing off again anytime soon! The electrical connection seemed tight when I put it back on. What is the sensor just ahead of the thermostat housing on the left nearside rear, the wire on this looks a bit ify.

Re the cap I was wondering about that too. The header tank looks to be original and the top is a little worn where the cap has been off and on over the years. I was also reading in a landrover magazine last week that a chap bought three caps before the last one did the job it was intended to do, so I'll get a new cap too just in case the one that was fitted during the rebuild was a dud.

Thanks again for the advice and fingers crossed.



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Post by Roger Pennington » Mon Apr 16, 2018 8:26 pm

Stoddy wrote:
Mon Apr 16, 2018 7:52 pm
What is the sensor just ahead of the thermostat housing on the left nearside rear, the wire on this looks a bit ify.
That's the sender for the temp. gauge, so it wouldn't do any harm to replace the connector, if looks a bit the worse for wear.


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Post by Stoddy » Mon Apr 16, 2018 9:04 pm

Will do thanks Roger. Is the header tank an obsolete part? Graham walkers didn't stock it and I don't see it listed in QEG or Reliant Parts World. If obsolete is there a comarable replacement that can be used?



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Post by scimjim » Mon Apr 16, 2018 9:18 pm

It’s a Ford item and as well as being quite rare, they’re now very expensive!


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Post by Stoddy » Mon Apr 16, 2018 9:51 pm

Yes I the one's for sale on ebay look no better than mine and the wanted what I was expecting to pay for a new one had they been available. Are there any alternatives or do I need to seek out a good second hand one?



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Post by scimjim » Mon Apr 16, 2018 10:11 pm

They rarely actually need replacing IME - chuck them in the dishwasher while the wife’s out and flatten the pressure cap face with some wet & dry on a flat surface.

I’m sure there’s alloy ones available and I expect others might fit but I’ve never bothered looking very hard I’m afraid.


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Post by reliant-reviver » Tue Apr 17, 2018 6:44 am

Reliant sold them all off about 10 years ago. Advertised at £350 each in eBay.

Pressure cap was going to be by next suggestion also.


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Post by Stoddy » Tue Apr 17, 2018 8:38 pm

£350!!!! I've ordered a replacement cap and I've also ordered some 16mm coolant hose to replace the bottom hose from the header tank where I'm not getting a good seal. I hope to get these by Thursday and will check the fan then too. Just in case these don't work I have my mechanic booked for Friday for a pressure test. It's such good fun to drive I'd be gutted if I couldn't use it for the NC500 next week.

Thanks again for the advice provided.

Alan



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Post by philhoward » Tue Apr 17, 2018 9:24 pm

reliant-reviver wrote:
Tue Apr 17, 2018 6:44 am
Reliant sold them all off about 10 years ago. Advertised at £350 each in eBay.

Pressure cap was going to be by next suggestion also.
Their use in the donor Ford was the Mk3 Ghia and RS Turbo, so they’ve been subject to retro/old Ford tax with the RS multiplier on top..


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Post by reliant-reviver » Wed Apr 18, 2018 8:23 am

Only the top spec Fords got the coolant level switch. We take it for granted in SS1s


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Post by Stoddy » Wed Apr 18, 2018 9:24 pm

It's definately the cap and possibly the neck of the header tank. I took the header tank off today and decided to blow into it with the cap on and my fingers over the other holes. My lungfuls of air came straight out the overflow but also round the neck where it should be sealing with the cap. New cap should arrive tomorrow, so fingers crossed.



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Post by Stoddy » Thu Apr 19, 2018 10:50 pm

Final update. New cap and 16mm hose arrived today. New cap is easier to go on and seals the header tank. I've had the car good and hot. On the drive running for about 15 minutes the car warmed up and a little above half way the fan came on. It did this three times with no blow back through the bottle, so that's a result. On the test drive the temperature guage settled about a third of the way up the guage. The car has since cooled and the level in the header tank has gone down about 10mm which is much less than it was doing before. My mechanic is popping over tomorrow and can hopefully trace the remaining small leak with a pressure test. Thank you all again for your comments and suggestions and role on Monday for the journey up to inverness to start the tour on Tuesday.

Cheers Alan



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Post by scimjim » Thu Apr 19, 2018 10:54 pm

Excellent :D


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Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), Sabre/MX5 auto (The Flying Broomstick),
1300 SS1 (Number One) & Sarah's coupe.
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