dneufeld Posted May 14, 2005 Share Posted May 14, 2005 hey guys just wondering if it is allright to wire the fuel injectors right up to the ecu. so on the injector one wire is direct or switched? 12v and the other would run straight to the ecu. im having some big issues with a transplant and am going crazy. thanks in advance! Quote Link to comment Share on other sites More sharing options...
Skip Posted May 14, 2005 Share Posted May 14, 2005 i don't think the injector coils would like you by passing the dropping resistors Quote Link to comment Share on other sites More sharing options...
dneufeld Posted May 15, 2005 Author Share Posted May 15, 2005 any idea on the value of those resistors? Quote Link to comment Share on other sites More sharing options...
Skip Posted May 15, 2005 Share Posted May 15, 2005 5.8 - 6.5 ohms each Quote Link to comment Share on other sites More sharing options...
dneufeld Posted May 15, 2005 Author Share Posted May 15, 2005 thanks again skip, so if i put these inline with the injectors it will be a-ok? Quote Link to comment Share on other sites More sharing options...
Cougar Posted May 15, 2005 Share Posted May 15, 2005 Putting them in line will not hurt anything but it may without them. I wonder what the power rating is on the resistors? Quote Link to comment Share on other sites More sharing options...
Skip Posted May 15, 2005 Share Posted May 15, 2005 well lets do the math this is DC 'trisity although the impedance of the injectors is quoted by sources as they are fed an alternating voltage pulse and they are coils aka inductors the resistor is 6 ohm the injector is 3 ohm = 9 ohm wattage (i.e. power DC) = V x I and I= V / R ala ohm law so W = V to the two / R = 14 x 14 / 9 = ~ 22 watts where does that take us ? To the Rat Shack? Quote Link to comment Share on other sites More sharing options...
NorthWet Posted May 15, 2005 Share Posted May 15, 2005 I'm thinking that that last calculation is a little off. The 22 watts is the total power dissipation for injector and dropping resistor. The dropping resistor itself would dissipate approx 14.75W. Still same conclusion, just slightly lower requirements. Mouser Electronics, Jameco, and a few other electronics houses are also good places to look. Or just grab a resistor pack off of another vehicle... I think Nissan used a similar rating. Quote Link to comment Share on other sites More sharing options...
Cougar Posted May 15, 2005 Share Posted May 15, 2005 Good point NorthWet. Also with the duty cycle as it is I would guess that they may be less than 5 watts but I have never looked into this. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.