Question about 1999 Lexus Gs 300
I have a 1999 Lexus GS300... Car is hesitating and can barely pick up speed no matter how hard I press the gas. Codes I am getting are P0300, P0304, P0305, P0171, P0172. When I first had it diagnosed I got a P0305 coed and one other I dont remember. They said it was either my ignition coil and/or my plugs. So I had the coil that they said was probably bad, all plugs, and the wires replaced. I used Bosch platinum plugs and NGK wires. Yet still my car is still doing the same thing and have only gotten worse. Now they tell me it must be the catalytic converter. Although I never got any codes that would suggest this (I dont think). Please help me. I am a college student that cannot afford anything as it is...
It sounds like it could either be a throttle positioning sensor failing, or possibly a fuel injector line could be loose which will cause air into the fuel system and cuase low power and hesitation,,
Posted on Nov 06, 2012
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Posted on Jan 02, 2017
The first and last code are your start and stop so you can ignore them the P1130 and P1150 are your two front oxygen sensors( pre cats ) bank one and two. Depending on your millage it sounds like it is time for a little maintence. Normally they should be changed at or around 60,000 kms
Posted on Dec 12, 2008
fuel pump presure needs checked as does the fuel filter. injectors fail commonly and theie easy to test with a scanner just turn them on and off one at a time
Posted on Jun 10, 2010
I looked it up on AutoZone.com and it looks like there is only one coil. You can verify that by giving them a call. However, to me it sounds like you might be having a problem with your idle air control valve. Since you are only having problems when the vehicle is at idle I would take a look at your IAC. It is located on the throttle body and is usually held on by two screws. When the IAC starts to go bad you will have problems with the vehicle when idling. Let me know if you have any other questions. Thanks for rating my response and for using FixYa!
Posted on May 25, 2009
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