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Feb 5, 2009 | 10:00 PM

#16

GS4_Fiend

Lexus Test Driver

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Joined: Aug 2008

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Quote:

Originally Posted by jcat_GS3

check the fuel filter. If you've cleaned injectors, replaced plugs, had an oil change recently, my money is on the fuel filter. If you're getting a CEL get the codes pulled at autozone and post them here. this should tell us better where to look. That mechanic of yours seems like a real piece of trash. Take the car elsewhere.

So you can see where i'm getting this from, your hierarchy of missing/shaking/pinging problems:

-air filter
-spark plugs
-fuel filter
-clean maf
-clean throttle body
-fuel injectors
-fuel pump
-vacuum leak
-head gasket

IIRC, the fuel filters on the GS is in the fuel tank. Not changeable.

Feb 6, 2009 | 09:27 AM

#17

sakataj

Lexus Fanatic

iTrader: (182)

Joined: Jun 2008

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From: tenn

Quote:

Originally Posted by GS4_Fiend

IIRC, the fuel filters on the GS is in the fuel tank. Not changeable.

correction. they are changeable but its a PITA BECAUSE they in the fuel tank and its supposed to be a lifetime part neways so u shouldnt need to change it

Feb 6, 2009 | 09:58 AM

#18

jcat_350

Lexus Champion

Joined: May 2008

Posts: 3,347

Likes: 6

From: RI

however, with a car that has over 100k miles the fuel filter can very easily need changing, especially if the car was not run with premium gas for it's whole life.

Feb 6, 2009 | 11:22 AM

#19

sakataj

Lexus Fanatic

iTrader: (182)

Joined: Jun 2008

Posts: 17,247

Likes: 77

From: tenn

Quote:

Originally Posted by jcat_GS3

however, with a car that has over 100k miles the fuel filter can very easily need changing, especially if the car was not run with premium gas for it's whole life.

true true....i never understand y dealers say some parts are lifetime when nothing will function forever