LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Fuel consumption problem

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Old 08-11-03, 06:38 AM
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Vik
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Unhappy Fuel consumption problem

I bought 95 LS recently (6 weeks ago) and car runs fine except 2 problems:

1) Fuel consumption. Average is 20-22 litres per 100 km (dunno how much in miles/gallon) in city driving.
1 fuel tank is enough for 420-480 kms (about 260 miles +/- 15 miles)
Guys, can you recomend something ? Maybe a problem to look at ? I still have dealer's warranty and hope I will be able to fix the problem if it's really serious.

2) A little bit noisy.
Car is noisier then I was expecting. It's not "tomb like" quiet Of course it's very silent comparing to Ford but I can hear all engine noises. Plus car vibrates on idle and when I'm driving.

If you have any ideas please let me know

TIA
Old 08-11-03, 08:10 PM
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SharpLS-96
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Try replacing your fuel filter and try some Chevron with Techron fuel injection cleaner. http://store.yahoo.com/rodi/ch65740t.html

Also sounds like you need a valve adjustment if your car has a slight tic.

Last edited by SharpLS-96; 08-11-03 at 08:10 PM.
Old 08-11-03, 09:03 PM
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LexLS
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Bad oxygen sensors can also cause poor fuel consumption, I am going to replace all 4 when I have some spare change. I don't think your fuel consumption is too far from normal range. I recently replaced my fuel filter and my MPG increased. It sounds like your car needs a tune-up though.

Hey, if you still have a dealer warranty just have them throughly check your car out and fix what needs to be done.
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