Thread #13740

UCF20/21 Engine Malfunction

5 archived posts · 564 historical views

shoezOctober 5, 2008
#193568

UCF20/21 Engine Malfunction

Hi guys. :) It's been a while since I've posted on here, but I need some advice from the experts.

About five days ago, my LS stopped idling. The engine will fire up under its own power, but I have to keep feathering the throttle just to keep the damn thing running. Whenever the car stalls out, the "Check Engine" and "Low Battery" indicator lights pop up even though all of the electricals are strong.

Any suggestions? In return, eye candy:

Forum image
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Hi guys. :) It's been a while since I've posted on here, but I need some advice from the experts.

About five days ago, my LS stopped idling. The engine will fire up under its own power, but I have to keep feathering the throttle just to keep the damn thing running. Whenever the car stalls out, the "Check Engine" and "Low Battery" indicator lights pop up even though all of the electricals are strong.

Any suggestions? In return, eye candy:

[IMG]http://i133.photobucket.com/albums/q68/HiAceKonnexion/x4061smileylei.jpg[/IMG]
BrandicusOctober 5, 2008
#193571
i never thought id say this.. but ask clublexus :biggthumpup:
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i never thought id say this.. but ask clublexus :biggthumpup:
LiCelsiorOctober 6, 2008
#193608
lol ^^. did u do anything engine wise prior to the problem?
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lol ^^. did u do anything engine wise prior to the problem?
MELLO*VIPOctober 6, 2008
#193629
Just guessing but it sounds like an issue with an idle air controller, or possibly a vac leak. Have the codes scanned might help you diagnose it... When you figure it out update your post
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Just guessing but it sounds like an issue with an idle air controller, or possibly a vac leak. Have the codes scanned might help you diagnose it... When you figure it out update your post
flexinsteelzOctober 7, 2008
#193989
try this, take off the intake hose and go clean ur throttle body...sould only take u lik 5-10 mins...
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try this, take off the intake hose and go clean ur throttle body...sould only take u lik 5-10 mins...