720_KID Posted February 28, 2013 Report Share Posted February 28, 2013 So all I need to know is where the idle switch is located, since my Sensor light came on so i checked the code and that was it. Also would that have anything to do with my horrible gas mileage? I'm getting about 9.8 MPG!! :/ Thanks. Quote Link to comment
datzenmike Posted March 1, 2013 Report Share Posted March 1, 2013 1/ Do you have one wing nut holding the air filter on... means you have the electronic controlled (feedback) carburetor or ECC. 1/ The round plug at the back of the ECC carb has a known habit of wires breaking inside the insulation. Nissan was too cheap and should have made them longer so they would flex from engine movement and when taking the air filter off. The throttle valve switch is on the carb near the throttle lever and has contacts that should close at idle and open above idle. (about 1,300 rpm) If the wire is broken for this then the ECU is fooled into thinking the throttle is open when it's really idling. The air fuel ratio is adjusted many times a second by a solenoid... if the wire to this or some of the other sensors is broken the system defaults to an over rich 'limp home' mode that won't hurt the motor but ruins the gas mileage. OR 2/ Do you have two wing nuts holding the air filter on... means you have throttle body electronic fuel injection. EFI 2/ The 'electro injection' system does not suffer the same problems as the ECC carb above but sensors or bad adjustments will cause problems. The throttle position and idle switch are on the firewall side of the throttle body opposite side to the throttle cable. It's a small flat black rectangular unit. Quote Link to comment
720_KID Posted March 1, 2013 Author Report Share Posted March 1, 2013 alright cool thanks. this really helped, so you think that this might be causing my bad fuel economy then? Quote Link to comment
datzenmike Posted March 2, 2013 Report Share Posted March 2, 2013 First of all, one wing nut or two. Quote Link to comment
720_KID Posted March 5, 2013 Author Report Share Posted March 5, 2013 It's a 2 wing nut... Quote Link to comment
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.
Note: Your post will require moderator approval before it will be visible.