Throttle body cleaning

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Jun 23, 2004 | 12:36 PM

LeXuSrAcIn

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Lexus Test Driver

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From: Texas

Throttle body cleaning

I posted this in the SC section and no one responded to it so I'll just ask the question here. Can I use the instructions on how to clean the throttle body for the SC400/LS400 on the SC300?? My throttle is completely clogged up and I'm wasting gas like crazy trying to get the engine to speed up. I got the cleaner... now all I need to know is if its the same procedure to clean the I6 as it is the V8s. If not, is there another DIY throttle body cleaning for the SC300?

Jun 23, 2004 | 12:56 PM

vedro

Driver

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From: New York

Lextreme provides very good instructions on how to do it yourself. The directions on throttle body cleaning are for LS400. They shouldn't be that much different for an SC. I hope this helps.

http://www.lextreme.com/tb.htm

Jun 23, 2004 | 01:09 PM

LeXuSrAcIn

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Lexus Test Driver

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From: Texas

Quote:

Originally posted by vedro
Lextreme provides very good instructions on how to do it yourself. The directions on throttle body cleaning are for LS400. They shouldn't be that much different for an SC. I hope this helps.

http://www.lextreme.com/tb.htm

Yes, I know of that article. It was the one I was referring to. But in it are instructions for a V8 and my SC is a Inline 6 so I want to know if all the components are the same.

Jun 23, 2004 | 01:21 PM

vedro

Driver

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From: New York

Sorry man, i wouldn't know. You can get the repair manual on a CD for your SC300 of Ebay for around $10 bucks. Compare the instructions from Lextreme to the manual and work from there.

Jun 23, 2004 | 04:24 PM

$/Aerostar\'s Avatar$

/Aerostar\

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From: Florida

Well, the actual cleaning isnt too hard. But you will have to remove the throttle body. If you need help on that, check out this thread:

https://www.clublexus.com/forums/sho...hreadid=103316

Just do steps #1 - 6

Have fun, its not too hard, its actually kinda fun. Also, while you've got the TB off, id recommend doing your plugs/wires

Last edited by /Aerostar\; Jun 23, 2004 at 04:25 PM.

Jun 23, 2004 | 08:45 PM

LeXuSrAcIn

Thread Starter

Lexus Test Driver

Joined: Apr 2004

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From: Texas

Thanks. The reason I want to clean the throttle body is 1). The car feels sluggish and 2). The accelerator jams up on stops sometimes. I've searched this problem and found out the accelerator jams up when the throttle body is gummed up. The car had a tune-up done just before I bought it (3 days ago). The only thing needed to be done to the engine is the throttle body. Other than that it seems perfect. My driver seat is #%%# up though. It makes it look like I got the car from a junkyard and the sucky thing is that the dealer didnt even reduce any money because the car was very good engine wise/mechanically.

Jun 23, 2004 | 11:37 PM

nthach

Lexus Champion

Joined: Oct 2003

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From: California

I cleaned mine, you don't need to pull the throttle body off, just block the throttle open with something, and spray carb cleaner on the plate.

Jun 24, 2004 | 10:08 AM

nthach

Lexus Champion

Joined: Oct 2003

Posts: 3,350

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From: California

Re: BG44K

Quote:

Originally posted by mmarshall
Try using BG44K fuel system cleaner, too, to help KEEP it clean. Comes in a red-and-black can. You can't get this stuff in drug stores or regular auto parts shops...usually only at repair shops. For some reason ( I don't know why ) it's not sold over-the-counter to the general public....but it is GOOD stuff.

It's too powerful to be sold to everyday people. I use Red Line SI-1 at the maintenance dose.