3.8 V6 Fuel Economy Improvements Bang for Buck

[Hertz Donut]

Oh right, late night forum browsing ftl. My bad.

 

[NeddyBear]

There great on fuel just stock standard.

 

[VR 60]

I have a 2002 VY V6 and I am interested in how to improve the fuel economy. I don't want to do a Gas Conversion since I may not keep the car long enough to make back the investment. What about chips, exhausts etc ???

 

[VR 60]

Hi Guys, I have VR statesman with a 3.8 Buick v6 . My fuel economy is 18 l per 100km ,way too much . The motor has 296 on the odometer. Could the oxygen sensor be faulty and cause this spike in fuel consumption? Cheers

 

[losh1971]

Hi Guys, I have VR statesman with a 3.8 Buick v6 . My fuel economy is 18 l per 100km ,way too much . The motor has 296 on the odometer. Could the oxygen sensor be faulty and cause this spike in fuel consumption? Cheers

yep need new O2 sensor to start with. New plugs and air filter will help too if reasonably old.

 

[VR 60]

yep need new O2 sensor to start with. New plugs and air filter will help too if reasonably old.

Thank you, I did think the 02 sensor could be the issue ,can all the plugs be removed without removing everything like a Mitsubishi V6 ? I have looked after the car with non smelly fish oil everywhere and have oil changed and filter every 5k's .i use Moreys oil additive and Moreys fuel/injector treatment, using 91 fuel. It's a 94 VR. Do you know what would be a good sensor you'd reccomend ? Cheers

 

[losh1971]

They use Delphi from factory. Delphi will be plug and play no splicing. Plugs are easy enough. The rear most right needs a short ext to make it easier to remove.

 

[VR 60]

They use Delphi from factory. Delphi will be plug and play no splicing. Plugs are easy enough. The rear most right needs a short ext to make it easier to remove.

 

[VR 60]

Thanks so much Losh,havent checked out plugs yet. Are the oxygen sensors easy to change? I'm not sure how many pins mine has yet and I know they're all different.

 

[losh1971]

Yeah not sure if Stato uses a standard 4 wire like Exec? Regardless if you buy Delphi it won't matter as it will plug straight in, as Delphi come with the plug. Whereas some other brands do not.
Easy to replace but they can be seized in and the rust makes fitting the new one a pain at times. I had the Y pipe off and sandblasted inside the weld nut, so the new one went in no issues at all.