I'm only getting about 10 miles to the gal in my 87 blazer 2.8 fuel injection!! i have replaced air filter plugs wires rotor and the cap!! does anyone know what i can do to get better miles!! it's killing me in $$$$$
<font face="Comic Sans MS">The O2 sensor is located in the exhaust manifold typically down by the flange. Take a look it has a wire (or wires) coming out of it and it's the only thing that will be screwed into that part of the exhaust manifold so it'll be easy (i think) to find. I'm not sure how to test one, but if you have an Ohm meter and someone with a book to tell you what the readings need to be at certain temperatures I think you could test yours. Or maybe just try pulling it and replacing it. [img]/wwwthreads_images/icons/crazy.gif[/img] Whatever you do, let us know if you fix it and what it took to fix it.
<font face="Comic Sans MS">There are all kinds of sensors on an EFI vehicle that can make mileage poor or make the engine run like crap if they get disconnected or choose to stop working correctly [img]/wwwthreads_images/icons/frown.gif[/img]. That's why I don't think I'll ever get anything fuel injected. Too much crap to have to chase around when it goes bad. I mean when it works it's nice but when something goes bad then it's [img]/wwwthreads_images/icons/frown.gif[/img]...
Sorry I can't be of much more help than this, I'm not really the EFI guru...