Whats up club lexus!
I have an 06 lexus gs300 and ive been having an acceleration problem. When im at a dead stop like at a red light and try to accelerate the car really hesitates in the acceleration part. I could have my foot pressed down to the floor and its hardly going. Has anyone else had this problem? And if so what could cause this?

 

Welcome to CL as a new poster.

A number of different things could cause flat-spot acceleration with EFI systems. Is the CHECK ENGINE light on?...that could indicate trouble with a number of underhood engine-sensors or the main computer. These include things like mass-air-flow-sensor, throttle-position sensor, crankshaft-position sensor, oxygen sensor (which sniffs the exhaust gas for the proper air/fuel mixture and sends a signal to the engine computer). Other possible culprits are a bad fuel pump, clogged fuel lines, clogged fuel injectors from using low-quality or cheap gas without cleaning detergents (a practice I do not recommend), water in the fuel, worn or fouled spark plugs, an excessively dirty or clogged air filter that will make the engine run too rich if the computer cannot compensate for it, and something (maybe) even as simple as having a too-thick layer of floor mat or mats bunched up under the gas pedal that prevents it from being pressed down far enough.

BTW, if a CHECK ENGINE malfuncunction or code is indeed found, some techs or shops simply knee-jerk replace the indicated part and hope that takes care of the problem (in other words, running up a possibly unneeded bill for nothing). That is NOT the correct way to do it (I did a whole thread in CAR CHAT about that). The CORRECT way to deal with a check-engine code is for the technician to get the Repair Manual for that car/engine and THEN do the required step-by-step procedure indicated FOR that code to effectively isolate the problem and (if applicable), THEN replace any needed parts.

Good Luck...let us know how it goes.