GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

full tank of gas=240 city miles!!!

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Old 03-11-12 | 12:17 PM
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Originally Posted by kwags1023
i cleaned my maf sensor 2 weeks ago before was 220 miles now 260+ thanks for this thread and tips
hey could you please post the link on how you cleaned your mac sensor?
Old 03-11-12 | 03:22 PM
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Originally Posted by islexusred
hey could you please post the link on how you cleaned your mac sensor?
https://www.clublexus.com/forums/gs-...and-gs430.html
Old 03-16-12 | 07:59 PM
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Default FYI after new Spark Plug & Intake Cleaned

Ok Folks, I replaced the spark plug with OEM and cleaned the Throttle Intake. I got approx. 100 miles with 4.45 gallons of Mobile gas. 50/50 Highway/City driving in Socal. Yeahhh Filled and Divided method here folks. Was averaging 17-18 mpg combined. The computer was showing 24.8 mpg after 3 minutes of cruising on the freeway @ 76 MPH and above. The mechanic haven't touch the MAF yet. The throttle intake was dirty, not too bad but was dirty. I was there the whole time when the Technician was cleaning it. Also got the tranny flushed with new fluid.

Last edited by GS714; 03-16-12 at 10:26 PM. Reason: updated
Old 03-21-12 | 03:58 PM
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I have 20inch rims.. and I'm getting 300miles when the E light comes on. How much gas is left in tank when the E light comes on.
Old 03-21-12 | 04:19 PM
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Originally Posted by GS300noob
I have 20inch rims.. and I'm getting 300miles when the E light comes on. How much gas is left in tank when the E light comes on.
The gas tank capacity is about 19 gallons. Take your 300 miles/gallons you have pumped and get the difference.
Old 03-21-12 | 05:14 PM
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Originally Posted by GS4_Fiend
The gas tank capacity is about 19 gallons. Take your 300 miles/gallons you have pumped and get the difference.
ok thanks. i've read online that the gas tank is 19.8 gallons,, is that correct or is it closer to 19 gallons ?? http://www.vehix.com/car-reviews/199...specifications http://www.edmunds.com/lexus/gs-300/...res-specs.html i'm only concerned because i'm taking a bit of a road trip next week and want to know how much i've got left when my E light comes on.. so 19 or 19.8 ???
Old 03-22-12 | 01:45 AM
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I have a GS400 and I get around 15MPG. I drive mostly city. Am I really that bad of a driver?
Old 03-22-12 | 04:21 AM
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Originally Posted by GS300noob
ok thanks. i've read online that the gas tank is 19.8 gallons,, is that correct or is it closer to 19 gallons ?? http://www.vehix.com/car-reviews/199...specifications http://www.edmunds.com/lexus/gs-300/...res-specs.html i'm only concerned because i'm taking a bit of a road trip next week and want to know how much i've got left when my E light comes on.. so 19 or 19.8 ???
19.8 us gallons
Old 03-22-12 | 07:35 AM
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Originally Posted by sam12345
19.8 us gallons
i just filled up my tank 13.9 i ran 275 from quarter
Old 03-22-12 | 08:00 AM
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Originally Posted by kwags1023
i just filled up my tank 13.9 i ran 275 from quarter
So you have 5.9 gallons left

You got 19.78 mpg
Old 03-22-12 | 06:28 PM
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Originally Posted by sam12345
19.8 us gallons
. thanks for clearing that up SAM . seems that when my E light comes on i have about 3gallons left giv'n me about 360per tank driving 1/2 city/highway .
Old 03-23-12 | 12:14 AM
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Originally Posted by GS300noob
. thanks for clearing that up SAM . seems that when my E light comes on i have about 3gallons left giv'n me about 360per tank driving 1/2 city/highway .
Most manufactures aim for exactly this. 3 gallons left when the fuel light turns on. Due to the inaccuracies of most fuel gauges often they miss this mark
Old 03-23-12 | 01:47 AM
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i dont do anything special i get 19.5 mpg and around 300ish to the tank
Old 03-25-12 | 08:02 PM
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Originally Posted by FlockoGS4
I just filled up my gs400 right before I cleaned my k&n filter, I put 91 in it navi trip says 270 miles... 80-85% city. Is that decent for the v8?
what MPG does the navi say?

http://www.fueleconomy.gov/feg/noframes/15118.shtml
Old 03-25-12 | 08:13 PM
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I'm getting 20 mpg on my Gs 430 70% hwy 30% city. Avg 340 gas tank



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