Big drop in fuel mileage-help

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Re: Big drop in fuel mileage-help [Re: Michelle] #410399 03/11/04 12:11 AM

Joined: Apr 2002

Posts: 2,529

Bluefield, Virginia

Bigpoppax2 Offline

Roll Me Over

Like I said before the rear two RARELY go bad. Did you do a reset of the computer, ie unhook the battery for a while and then give it a few days to relearn.

I would really doubt it's the rear o2 sensors unless someone had used some intake/carb cleaner that wasn't o2 sensor safe, or a gas additive that wasn't safe for o2 sensors.

A gun in the hand is better than a cop on the phone.

98 Passport 33's, Supercharged, Calmini Bumper, rockbars, diff drops, Teralows, 4.77's, Aussie and ARB lockers, Safari snorkel, Optima red top.

Re: Big drop in fuel mileage-help [Re: holger] #410400 03/11/04 02:08 AM

Anonymous

Unregistered

Before Canada went metric, we used Imperial gallons (5 quarts to gallon instead of the 4 quarts in a US gallon).

I average about 24 mpg (CDN) with my 91 V6 trooper or 20 mpg (US). Of course I could also say I get 12.0 L/100km but that takes a bit of getting used to. <img src="/forums/images/graemlins/confused.gif" alt="" /> <img src="/forums/images/graemlins/confused.gif" alt="" />

Quote

I wonder what kind of gas, what kind of 'miles' and
what kind of 'gallons' you guys in Canada have
to get 27 (!!!) miles per gallon ! Here in USA we can
get 27 MPG only in cars.

Oleg

Quote

Just an update - Well it turns out i had 2 totally dead 02 sensors. I have replaced them and a fuel filter but not sure if it has totally fixed the mileage problem. I could only get 2 of the 4 and am waiting for the other 2 to come in so i can replace them as well. So far CEL is staying off. Best mileage i had with my truck is 27 mpg on long hwy trip. Right now is is getting 19 mpg for shorter trips and cant find a leak anywhere. Hopefully replacing the other 2 will make it just like a new truck. <img src="/forums/images/graemlins/cheers.gif" alt="" />

Re: Big drop in fuel mileage-help [Re: Bigpoppax2] #410401 03/11/04 04:49 PM

Joined: Feb 2004

Posts: 28

Alberta Canada

Michelle

Getting the Wheeling Fever

Both rear 02 sensors were bad. They were worse than the front ones and almost seized in there. Took a bit of work to get them out. I have only owned the truck for 40,000 km's so i dont know what other problems someone had with it but I was told it looks like the rears had been changed before. Fired up the truck this morning and the engine sounds like it is running stronger so i hope this fixes the problem. Also did an oil change and put in an additive to help boost the compression. One was down a bit and noticed the truck was using a bit of oil. Cross your fingers everyone that I have no more problems.<img src="/forums/images/graemlins/kewl.gif" alt="" /> <img src="/forums/images/graemlins/cheers.gif" alt="" />

Re: Big drop in fuel mileage-help [Re: Michelle] #410402 03/13/04 05:09 AM

Joined: Oct 2003

Posts: 1,318

Monson, MA

chasespeed Offline

Body Damage is Cool

Oleg, I get about 24- 25 on the highway with mine(5th gear and CC only) anyway, KEEP AN EYE ON THAT OIL!!!! If you start going through it quick... They are becoming well known for using alot of oil, then burning up..MAY NOT be you case, just keep an eye on it...
Good luck..
Chase

Chase

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