Question about 1994 Buick LeSabre

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I just spent $1200.00 on a major tune up and I'm only getting 12 mpg

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1- did they change fuel filter?
2- check tire pressure
3 does car lack power at speed?- catalytic converter

Posted on May 27, 2011

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Posted on Jan 02, 2017

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1 Answer

Poor gas mileage-6 cyl-,.10-12 mpg -city


Get a complete tune up. Change the spark plugs, spark plug wires, oil change, electronic ignition starter, and points..if you have an older vehicle.

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2000 Ford Expedition- used to get 18 mpg now all of sudden down to 12 mpg - what gives?


replace your air filter and spark plugs. clean maf or map sensor

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2005 dodge stratus 2.7 l is choking out and dying when i put it in drive and reverse whats the problem


givit a major tune--chec egr valve--clean throttlebody and idle motor-----plug wires probly worn inside--bad thermostat causes warmup and mpg problems

Mar 30, 2012 | 2005 Dodge Stratus

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I just bought a 2005 expedition. It started chugging right from the start. I was told it had been sitting it would resolve. It only got worse. It's mostly when I take my foot off the gas a little. When...


Spark plugs would be a good place to start along with an oil change, put some fuel treatment in your tank and drive it a while it should come out of it.

Aug 24, 2011 | 1997 Ford Expedition

1 Answer

I have a FORD Econolinen 1993. When I drive he abuse 45 ltres of gaz on 100 miles . Is this normale ?


on normal that trk should be around 6-7 gallons used per one hundred miles drove. i based that at 15 mpg. now that is also based on a V8 engine. now 1 gallon of gas is 3.78541178 liters which totals 12 galons of gas to 45.42494136 liters. This would mean that it took 12 gallons of gas to travel 100 miles which totals 8.3333333333 mpg. not as good as i would have thought. 8 miles per gallon (mpg) hell that engine must be a big block 460. If it is that big cubic inch i could understand but any other motor should do better mpg than 8.3. so i agree that is not normal, tune up, or look for fuel leak in the fuel supply or( feed ) line. From the tank to the motor. This must be a canadian truck yes? well hope for the best or trade that guzzler in for a new breed. stay warm!

Jan 14, 2011 | 1993 Ford Econoline

1 Answer

Car runs fine but gas millage dropped to about 10 mpg this week


might have burnt piston rings. check if u are burning oil, if not then thats ur problem. (piston rings)

Jun 02, 2010 | 1995 Toyota Camry

1 Answer

1983 grand marquis mpg with the 302


If it is properly tuned, and the throttle body, choke setup is working properly, you should get 12-15 city and 18-20 hwy.

Jan 23, 2010 | 1983 Mercury Grand Marquis

1 Answer

My mpg's are way down I am only getting about 105 miles per full tank of gas. I put new spark plugs in and a new 02 and still mpg's are way down what do I do next?


Try a major tune up (spark plugs are only one part of it) fuel/air filter, PCV valve, cap, rotor, spark plug wires and adjust timing..

Dec 10, 2009 | 1993 GMC Jimmy

2 Answers

Im looking at a 1994 f350 dually with the 460..its a five sppeed..i need it to pull my cow trailer..can i get 12 mpg pulling?? also, what do you think about this motor and set up in general...any help or...


Price is not bad, the motor set up is a great motor. I have never heard of any major problems with it. You will not get 12 mpg unless you are pulling empty on a level surface or a downgrade. A more realistic number will be 8-10 mpg with a loaded trailer at normal speeds. If you travel around 55 on highways you may be able to average 12 depending on conditions. You may also look to make sure it has a transmission cooler and weather or not it has turbo. All of these things will effect your mileage.

Nov 06, 2009 | 1994 Ford F350 Crew Cab

1 Answer

Bad Gas mileage. I am getting around 12 - 13.5 mpg around town. 5.2 4spd auto. 90K miles. Thoughts?


Have a complete tune up performed , includes spark plugs , wires cap and rotor. Change air filter element and have a fuel induction service performed as well.

Aug 16, 2009 | 1997 Dodge Dakota

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