costas1 Posted November 27, 2012 Share Posted November 27, 2012 hi mates. i have a question and i need some help. i have the pressure switch for my water-methanol injection system. i tested the switch and it is always closed circuit(have volts on the meter). as soon as hits the pressure i have set to it the circuit opens(no volts)..the system also has a relay. is it possible that the relay's job is to reverse the function and when i have no volts on the meter it actually works on the car and make the pump work? i hope you understood what i am trying to say..thank you Quote Link to comment Share on other sites More sharing options...
Calorus Posted November 27, 2012 Share Posted November 27, 2012 Hi Mate, Can't give you much help on the problem, but you might find more people to help if you put the actual problem you're trying to solve in the title. Best of Luck! Quote Link to comment Share on other sites More sharing options...
costas1 Posted November 27, 2012 Author Share Posted November 27, 2012 thx mate but how do i change the title? Quote Link to comment Share on other sites More sharing options...
Graham1984 Posted November 27, 2012 Share Posted November 27, 2012 Edit your first post in this thread and click go advanced and you can do it in there. Quote Link to comment Share on other sites More sharing options...
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