Removing and Cleaning the OCV Valve is a 30-minute process requiring an alen wrench to take the dust cover off of the front/top of the timing housing, and a large 21mm(?) socket to remove the oil line going into the VVTi Cam houing on the top front drivers side of the valve cover.

The OCV filter is way inside there but come out easily. Its made of Aliminum housing and SS mesh.

Also check the OCV Valve itself...it also removes extremely easy with a single 10mm bolt on top/front of the VVTi cam cover.

 

Buy a used throttle body. Thats what I did, I stripped of the motor and used my orig TB. That was after I replaced the TPS on the old TB and of course...as any Non-Lexus Dealer mechanic knows...the TPS is rarely if ever the actual problem.

Sorry late reply.

 

This will fix it . i have read many posts and most have answer now

here is what the dealership said.
Pulled engine codes (P1120 Accelerator Pedal Position Sensor) Performed Lexus diagnosis procedure. Found when warm, accelerator sensor goes open. Suggest to replace Lever Assy, Throttle Part Number 22060-46010. $336.76.

I just ordered it and its coming tomorrow. Hope its easy to install. I was looking for a (how too) on line. but couldn't find one. if anyone has instructions can you post it please. otherwise ill give it a shot tomorrow...
Ill update tomorrow. thanks for the help again

 

thanks. i got it fixed. When the throttle lever assy came in yesterday, it looked real easy to put in. attached by for screws and a wire. took about 45 mins to switch it but when the new part was on, i started her up and ooooooooo ya,,,,,, she ran great. all of the error codes went,limp mode was gone and after a test drive , i found no problems. thanks to everyone who helped me figure this out. and thanks luxor for the call.

 

Glad you got her all fixed up. $~350 is kinda expensive, but if it solved the problem thats what matters.

Im now dealing with a "Bank 1 Lean" error...oh well, what can I expect for over 250K miles.

 

ya it was expensive. i know its because i got it from Lexus dealership. I just wanted to make sure it was the right one and the cool thing was that they shipped it to me in a day for free!!!!! so I guess it wasnt that bad. thanks again

 

Was driving along today in my 2000 Lexus GS 300, CEL and VSC lights pop on - then limp mode. Some sputtering, but after a couple miles seemed to drive better, lights still on of course. First thing I did was search club lexus. Next step will be pulling codes on my lunch at AutoZone. I will be back to share those codes and hopefully narrow this down quickly without spending too much $$$. It's always something.................

 

Just happened to me yesterday. Check engine light is blinking and the VSC light is on. I couldn't drive pass 40mph and at the light it's shaking like a stripper. I'm dropping it off to my Lexus mechanic tonight. This is great, first the hail storm and now this. It's always something.................

 

Well I'm back, just had my codes ran at my local AutoZone. Now I'm really confused. I pulled none of the codes mentioned here. Mine were P0300, P0301, P0303 and P0305 (all cylinder misfires) I'm going to search these codes in the forums, but would they cause the limp mode effect?

Thanks.....

 

Sounds like u got a compression problem. Check the OCV see if its clogged

 

My Lexus mechanic told me it might be cylinder 1 is misfiring, might be coil or something to that nature. He's taking my car to dealership to work on it.

 

the spark plugs was flooded, it cause the misfiring. car is running back to normal.

 

Spark plug flooded in a lexus ??? Did he say how/why?

Its very difficult to flood a lexus fuel-injected engine unless something else is not working properly....

did he give you any better info?

 

He noticed water inside. Sunday I was driving on bad rain day. Drivers splashing baby pool of water on both sides of the streets on each other.When I got splashed twice, the rough idling happened. I'll text my mechanic to get a full detail explanation.

Update: He says water in spark plugs, cracked porcelain on the plug.

 

The water issue may make sense. My initial limp mode came after my car was sitting in two heavy days of crazy rain here in NJ. Very excessive flooding. First time driving after the rain, I experienced limp mode. Had my codes ran and misfiring came up, I was frustrated so I unhooked my battery and opened up the valve cover and some other parts to take a peek. Didn't see anything...but I've been driving about 150 miles and the CEL has not popped back up and the car is running normal (cross fingers)....The codes should have reappeared by now if there was something wrong, right??