First Man Posted January 21, 2002 Share Posted January 21, 2002 I know that engine temperature can be a bit of a problem on Seven's and wondered whether I have such a problem: My 1.8 K SS heats up to an indicated 120 degrees - the line just before the dial turns red - especially when pressing on. It will from time to time then fall suddenly by about 20 degrees, only to rise again equally quickly. Is this normal? Is it a problem? It doesn't go into the red and there is no sign of steam, odd noises or anything else. Car has an ali rad and silicone hoses. No leaks etc, heater works fine. Could it be the sender or would a problem there show no temperature at all? First Man. Link to comment Share on other sites More sharing options...
WILL FLY Posted January 21, 2002 Share Posted January 21, 2002 Edited by - will fly on 21 Jan 2002 12:33:48 Link to comment Share on other sites More sharing options...
WILL FLY Posted January 21, 2002 Share Posted January 21, 2002 If you're talking water temp then it's way to high. Mine never gets above 80C. I'd suspect your thermostat especially with the cyclical temps, sounds like your thermostat is opening too high and then dumping cooler water into the system. See willfly.net for more info. If you don't spin you ain't trying smile.gif Link to comment Share on other sites More sharing options...
martinwhitcher Posted January 21, 2002 Share Posted January 21, 2002 i agree with the above, the only way to comfirm is to check with the kettle trick, or you may still have a slight airlock. best of luck Martin Link to comment Share on other sites More sharing options...
First Man Posted January 21, 2002 Author Share Posted January 21, 2002 Thanks guys, I'll check out the thermostat. First Man. Link to comment Share on other sites More sharing options...
Slarty Blat Fast Posted January 21, 2002 Share Posted January 21, 2002 Sounds like an airlock. Symptoms can be similar with a low water level, but I guess you've checked that. Slarty Blat Fasttongue.gif Link to comment Share on other sites More sharing options...
I.Mupferit Posted January 21, 2002 Share Posted January 21, 2002 I would be inclined to suspect the temperature sender unit as well. My first one had exactly these symptoms after 2 years of perfect operation. Changed it and no problem since! Brent Link to comment Share on other sites More sharing options...
Johnty Lyons Posted January 21, 2002 Share Posted January 21, 2002 You may actually be on the wrong track here the clue is the cycling of the temp guage the thermostat is seeing to much cold water from the rad and is not allowing the cooling water to circulate properly I bet if you blank off the bottom 1/3 of your rad you will find that at this time of yearthat the engine will run cooler and the temperature will stablize Its all really to do with the stupid way the K thermostat housing sees the different water tracts Trust me it works. jj Link to comment Share on other sites More sharing options...
Snapper Posted January 23, 2002 Share Posted January 23, 2002 Try the following Options Airlock? Temp Sender Rad Thermostate Bad earth for the temp gauge Header tank cap (at over 4000 revs my temp would go through the roof and it turned out to be this) Be carefull because I am told that the oil starts to break down at about 125" and thats when real damage starts. New Superlight Has Arrived teeth.gifteeth.gifteeth.gifteeth.gifteeth.gifteeth.gifteeth.gifteeth.gifteeth.gifteeth.gifteeth.gifteeth.gif The Smiles Just Gets Bigger wink.gif Link to comment Share on other sites More sharing options...
MJS Posted January 23, 2002 Share Posted January 23, 2002 Johnty, I agree 100% with you. First Man, reason for the above is because I had exactly the same problem over Christmas. Previously it never budged either side of 80°C, but during a particularly cold spell I started to get overheating problems the same as you describe. After much draining, re-filling, checking thermostat operation, draining, re-filling etc, etc I concluded that it could be due to over cooling in the radiator. Tie wrapped a sizeable piece of card as a temporary measure behind the grill and the problem was solved. I was very relieved. Have since restricted my driving due to excessive amounts of salt and s*it on the road. Matt. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now