ben_harmer32 Posted May 24, 2021 Share Posted May 24, 2021 My friends Supra is behaving oddly. The temp gauge keeps.going up and down. Any ideas please? Thank you! VID-20210524-WA0024.mp4 Quote Link to comment Share on other sites More sharing options...
Hamilton Posted May 24, 2021 Share Posted May 24, 2021 Has he checked for coolant leaks? Same thing happened to me and it was a leak that I hadn’t picked up on- radiator core was failing. 1 Quote Link to comment Share on other sites More sharing options...
ben_harmer32 Posted May 24, 2021 Author Share Posted May 24, 2021 18 minutes ago, Hamilton said: Has he checked for coolant leaks? Same thing happened to me and it was a leak that I hadn’t picked up on- radiator core was failing. Cant see any leaks. He was driving back from having it MOT'd Quote Link to comment Share on other sites More sharing options...
jim_supra Posted May 24, 2021 Share Posted May 24, 2021 I'd say it's electrical given how fast the needle is moving up and down whilst revs seem to stay relatively stable. Perhaps coolant temp sensor? 1 Quote Link to comment Share on other sites More sharing options...
Tyson Posted June 16, 2021 Share Posted June 16, 2021 On 5/24/2021 at 10:29 PM, jim_supra said: I'd say it's electrical given how fast the needle is moving up and down whilst revs seem to stay relatively stable. Perhaps coolant temp sensor? If the temp is flying up that high the system would be over pressuring and coming out of the filler cap wouldn't it? If it isn't I agree that it is probably sensor related, unless there is a serious blockage somewhere. Quote Link to comment Share on other sites More sharing options...
Ric Posted June 16, 2021 Share Posted June 16, 2021 serious air lock or failing radiator. Quote Link to comment Share on other sites More sharing options...
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