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GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Throttle Control/Idle Control Valve Motor Replacement

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Old Jan 27, 2017 | 08:43 AM
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sjpitts
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Originally Posted by lexo98
Are you sure the throttle position sensor is properly installed? It doesn't just slide straight in. The tabs on the inside need to be angled so that it will control the throttle. It's hard to explain but when I cleaned my throtttle body I had removed it and didn't reinstall the tabs so they were lined up and felt spring loaded and my car didn't run. I freaked out until I figured that out. If it doesn't feel spring loaded, when you measure with the ohm reader and move the tps the ohms will not change
Well, I haven't touched the throttle position sensor yet, so I assume it is still installed corrected.

To recap- we just started experiencing the limp mode with codes P1120 and P1121 and the VSC lights on. I read the threads, and ordered a new Throttle Control Motor. But I haven't even tried to install it yet, because Mr Jokster pointed out that it may not be the motor, and was in fact probably the APPS instead. So I have been testing the APPS trying figure out if that was the problem instead, and based on what Mr Jokster said and the tests I did, it probably was. So that is where I am now. I haven't touched the car except to test the APPS. Now I am looking to buy an APPS as I mentioned in my last post.

I have some hope that I may be able to return or sell the throttle motor if I don't end up installing it.

Jared
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