Smellywelshman Posted May 11, 2008 Share Posted May 11, 2008 Hi guys, Been having some temp reading problems of late (see here http://www.mkivsupra.net/vbb/showthread.php?t=148556) and decided to fit a new temp sensor to see if that sorted it (start with the easiest thing and all that). Well, it didn't:rolleyes: So I've removed the thermostat to see what was what. It was fully closed when I took it off and I put it in water and heated that up to check its operating temp (meant to be 82degrees). At 82 it started to move very slightly, and at 88 there was a gap between the rubber and steel parts of approx 1mm. Normal? I turned off the heat and left it in for a few mins and it continued to open to a gap of 4-5mm. Is this normal behaviour? Or is it slow to open and close? And would this cause the symptoms in my previous thread?? Taaaaaa for your input in advance, as always! Rob... Quote Link to comment Share on other sites More sharing options...
Scooter Posted May 11, 2008 Share Posted May 11, 2008 I turned off the heat and left it in for a few mins and it continued to open to a gap of 4-5mm. Rob... manual says that at 95 degrees the stat should be open 8.5mm or more..............so leave it in a bit longer and see if it makes it!? Quote Link to comment Share on other sites More sharing options...
Smellywelshman Posted May 11, 2008 Author Share Posted May 11, 2008 Hmm, Didn't see that bit in the manual!! Doh!!! *runs back to the oven* Quote Link to comment Share on other sites More sharing options...
Smellywelshman Posted May 11, 2008 Author Share Posted May 11, 2008 Well, a set if Vernier calipers set to 8.5mm slide snugly into the gap at 95 degrees. I assume that this means the stats working correctly? Quote Link to comment Share on other sites More sharing options...
Smellywelshman Posted May 11, 2008 Author Share Posted May 11, 2008 aaaaa bump Quote Link to comment Share on other sites More sharing options...
tooquicktostop Posted May 11, 2008 Share Posted May 11, 2008 (edited) I never read the first thread properly !! Edited May 11, 2008 by tooquicktostop (see edit history) Quote Link to comment Share on other sites More sharing options...
and1c Posted May 12, 2008 Share Posted May 12, 2008 Well, a set if Vernier calipers set to 8.5mm slide snugly into the gap at 95 degrees. I assume that this means the stats working correctly? Yup. The stat sounds ok. Sounds more like a problem with the actual temp gauge or the wiring to it. You could wire in an independant temp gauge and see if its reading correctly If it does then get those wiring diagrams out and get the dash binnacle removed Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 12, 2008 Share Posted May 12, 2008 I'd fit a new stat anyway, they are notoriously fickle to check, as in real usage they are under pressure and may act differently to in a saucepan. Quote Link to comment Share on other sites More sharing options...
Smellywelshman Posted May 12, 2008 Author Share Posted May 12, 2008 Yup. The stat sounds ok. Sounds more like a problem with the actual temp gauge or the wiring to it. You could wire in an independant temp gauge and see if its reading correctly If it does then get those wiring diagrams out and get the dash binnacle removed Smelly(colourblind)welshman+wiring= I'd fit a new stat anyway, they are notoriously fickle to check, as in real usage they are under pressure and may act differently to in a saucepan. I was thinking this.... And for the price of them I might as well completely rule out the thermostat as the cause. Got to order a new gasket for it any way! Tricky little bugger to get out aren't they, my wrists just dont bend in the right places!! Had to take the alternator off in the end!! Quote Link to comment Share on other sites More sharing options...
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