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post #1 of (permalink) Old 11-22-2000, 06:51 PM
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87 BLAZER MILEAGE

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 $$$$$
thanks HUNTER

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post #2 of (permalink) Old 11-22-2000, 10:54 PM
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Re: 87 BLAZER MILEAGE

When was the last time you changed the O2 sensor? what size are your tires? air pressure? jeff

jeff
86 4x4 2.8/3.4 jimmy
post #3 of (permalink) Old 11-23-2000, 11:48 AM
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Re: 87 BLAZER MILEAGE

THANKS FOR THE REPLY! TIRE SIZE IS 30X9.50 AIR PRESSURE IS ABOUT 30! WHAT IS THE O2 SENSOR? AND WHERE IS IT?
THANK YOU
HUNTER

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post #4 of (permalink) Old 11-23-2000, 11:53 AM
 
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Re: 87 BLAZER MILEAGE

<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.
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post #5 of (permalink) Old 11-23-2000, 12:30 PM
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Re: 87 BLAZER MILEAGE

OK I WELL REPLACE IT IF I CAN GET IT OUT! WELL THAT MAKE THE MILEAGE BE THAT BAD IF THE 02 SENSOR IS BAD?
THANKS FOR THE HELP
HUNTER

post #6 of (permalink) Old 11-23-2000, 01:58 PM
 
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Re: 87 BLAZER MILEAGE

<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...
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post #7 of (permalink) Old 11-27-2000, 01:44 PM
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Re: 87 BLAZER MILEAGE

Yes, the O2 senser can really F things up. That would be the first thing to change. Is the check engine light comming on at all?

Also, is the torque converter locking up? Mine is getting roughly 13 mpg 'cause the torque converter will not lock up.
BTW, I get 13 mpg with Country Fair gas and a little over 14 with Sheetz.

Please take the caps lock off, it's kinda annoying.

Hit? Them tires rub. Rubbin's off roadin.
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