Author	Subject: Is my thermostat the issue?
cornish_pug Regular Location: Marazion Registered: 18 Dec 2009 Posts: 368 Status: Offline	Post #1 Over the last couple weeks I've noticed my coolant temperature gets high at high speeds or when traveling up hill (when the engine is working hard). I've read that this could be due to a thermostat not opening fully. My coolant level is not critically low but could do with a top up. What are your thoughts? ________________________________________ Team Diesel
Posted 18th Apr 2015 at 21:58 Profile

Mossy1985 Senior User Location: Darlington Registered: 04 Nov 2014 Posts: 545 Status: Offline	Post #2 Have you had any work done on the cooling system lately? No chance of an air lock? Could be a blocked radiator? When its up to temp are both bottom and top pipes hot?
Posted 18th Apr 2015 at 22:04 Profile

cornish_pug Regular Location: Marazion Registered: 18 Dec 2009 Posts: 368 Status: Offline	Post #3 No work has been done on cooling system. Haven't checked the pipes yet. ________________________________________ Team Diesel
Posted 18th Apr 2015 at 22:08 Profile

cornish_pug Regular Location: Marazion Registered: 18 Dec 2009 Posts: 368 Status: Offline	Post #4 When cap is off there does seem to be water flow. Not sure how much there normally is. ________________________________________ Team Diesel
Posted 18th Apr 2015 at 22:10 Profile

cornish_pug Regular Location: Marazion Registered: 18 Dec 2009 Posts: 368 Status: Offline	Post #5 Topped up with antifreeze used about 50ml not much so there's not leak on the system. Fan did come on last night when the temperature just nudged 100°C ________________________________________ Team Diesel
Posted 19th Apr 2015 at 10:24 Profile

barrym Senior User Location: Westcliff-on-sea Registered: 26 Jun 2014 Posts: 502 Status: Offline	Post #6 For what it cost and the effort involved change the thermostat and go from there mate ________________________________________ China D Turbo HDi daily charger Black Rallye occassional toy
Posted 19th Apr 2015 at 18:05 Profile

cornish_pug Regular Location: Marazion Registered: 18 Dec 2009 Posts: 368 Status: Offline	Post #7 all sorted it was a closed thermostat after all. ________________________________________ Team Diesel
Posted 20th Apr 2015 at 20:24 Profile

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