a couple of days ago, I posted a question about a problem I am having with my 1998 GS 400. Please see my other post (from ky GS 400) the lead is (what the code of system too lean bank 1). I know the code but Lexus could not fix my car. PLEASE READ MY POST, the lead is (what is system too lean bank 1). I would really appreciate any help !!!!!!!!!!!!!

 

I'm not who you're looking for but it usually points to a vacuum leak...

 

again, not a mechanic but if you're having fuel trim problems it could be vacuum leak as stated or plugs/injectors/02 sensors.

bank one being too lean means the car is either dialing back fuel to bank one because it isn't burning right or is diverting to the other banks. are you having any missing, etc?

i've heard of this happening many times before, it should be easily fixable.

hey spawn, btw, you need a / in that close tag for your sig image (i.e. [sigpic][/sigpic])

 

i too have never seen a throttle body go bad in one of those...there may be 2 problems going on here...1st during a cold start...if you have to pump the gas to keep it running or it seems to stumble when cold...i would look at the IAC (idle air control valve) usually a good cleaning will fix this. now...the lean code could be from numerous things...dirty air filter, 0s sensors...(new ones can be bad too)...exhaust leak, it could also be a bad ECU. If the car is acting up, i cant understand why they cant fix it...bring it to me...i'll fix it.

 

yep check the vac lines first, then check your fuel system, check if ur fuel pump might be on its way out and clog in the fuel filter.