Question about 2002 Buick Park Avenue

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Poor fuel mileage on my Park Ave 2002, my '97 got 5-7 mpg better. What do you think- I do not have a check engine light on.

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  • 68 Answers

When was the last time you did a basic tune up. plugs, air filter etc

Posted on Mar 25, 2011


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Can I use 88octane-15% ethanol in my 2011 ram hemi

The owners manual probably says no. Most say 89 octane is the lowest. Look in manual if you have one or they are typically on-line. With that said, test your vehicle with that fuel. Next time it is very close to empty put 2-3 gallons in the tank and drive. If the octane is too low the engine will "spark knock" or "diesel" (a rattling sound from the engine upon acceleration caused by fuel pre-ignition/detonation). If that happens put an equal amount of premium fuel in the tank and the spark knock will go away. Short-term a spark knock won't damage an engine, but longer term can by causing over heating, vibrations, abnormal stresses ... hesitation on acceleration - poor mileage and poor engine performance. If you are able to use 88 octane-15%, without getting a spark knock, make sure you check your mileage and see if, or how much, it drops. Lower octane and higher ethanol both reduce mileage. What I always told my gas customers was to check your mileage with different octanes and see what octane gives the highest mileage (and then do the math and see if its cost effective). Say you use regular normally and you get 30 MPG. Then you try the mid-grade and get 33 MPG, so you try premium fuel but you still get 33 MPG. In that case the mid-grade is your best option, assuming that your 10% increase in mileage cost you less than a 10% increase in cost! But you do always stay away from fuel that causes a spark knock.
The rule of thumb is: The higher the octane the cooler the combustion, therefore the lower the octane the hotter the combustion. Higher ethanol means that the engine is running a little leaner and a little hotter.

Mar 09, 2018 | Cars & Trucks

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Poor fuel economy on hiway 22 or 23 mpg 2002 Park Ave My 1997 consistently got 28-32 mpg

have you tired changing air filter, spark plugs and wires that may help

Mar 04, 2011 | 2002 Buick Park Avenue

2 Answers

How can i get better gas milage i'm only getting 13.5 mpg

You need to put the car in good conditions like:
-engine oil
-air filter
-Tires pressure
also aling the front wheels
Can be many factors.

Oct 29, 2010 | 1995 Buick LeSabre

2 Answers

Buick regal 92 3.8L Horrible fuel mileage

Sounds like you might have an oxygen sensor problem. Your catalytic converter(s) maybe defective or dirty. That in turn can dirty up the oxygen sensor. A defective oxygen sensor will send faulty info to the computer, interpreting the fumes as cold (even when the engine warms up). That causes the computer to adjust the fuel mixture to very rich, giving you poor gas mileage and the fuel smell. Hope it helps.

Mar 16, 2010 | 1992 Buick Regal

2 Answers

1998 buick park ave ultra service engine soon light will come on the go off in 2 weeks then returns about 1 month later took it to serval mechanics shows no problems fuel average goes down to 16 mpg

you have a paracitic load on the engine, even if the light has gone off the code will still be stored in the computer until someone clears it, get it read out and it will give you a pretty good idea of what set it off

Feb 25, 2010 | 1998 Buick Park Avenue

2 Answers

High fuel consumption, what is its normal consumption per 10 litres

hello Fuel Type Regular MPG (city) 25 MPG (highway) 34 MPG (combined) 28

Feb 22, 2010 | 2000 Toyota Camry

2 Answers

I get very poor gas mlieage. i used to get 300 miles per tank, now it dropped its way down to 250. replace O2 sensors maybe?

anytime a complaint is poor fuel milage and all diagnostics prove to be ok and the 02 sensor(s) have over 70th on them we replace them.

Do not replace the one (s) after the catalytic converter. They have very little to do with fuel control.

Also if you have a MAF in the intake near the air filter these become dirty and sometimes can be cleaned.
When they get dirty the computer will not see the air and in return will not add enough fuel.

Feb 11, 2010 | 1999 Isuzu Rodeo

1 Answer

Poor Gas Mileage

its on the fire wall yes it will help some i wouldnt expect a drastic change in fuel economy because acura dosent have a replacement schedule for fuel filters like most car companies. id check your air filter and if your check engine light is on it will seriously kill your mpg. hope this helps

Oct 01, 2009 | 1998 Acura CL

1 Answer

Tuck misses when decelerating, Poor mileage.

to much fuel pressure or bad vacume line

Mar 23, 2009 | 2007 Mazda B4000

1 Answer

Poor Fuel Mileage 2006 Hyundai Sonata 2.4 motor

I don't know from where you bought the car but do you feel certain that typical causes such as fouled plugs or clogged air filters are not at fault?
Most dealers, even the shlocks don't normally skimp on the simple stuff but who knows about a private source?
That does seem low, especially the city numbers. I don't think Hyundai is any leader in gas mileage but they are better than what you are getting.  

Dec 24, 2008 | 2006 Hyundai Sonata

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