I have a toyota trueno 1992 its powered by a silvertop 4age engine, recently i have experienced idle problems! never happend before and just happend all of a sudden. One day (aka yesterday) i went to turn on the car, it was completely dead no power what so ever, lights wern't on engine didnt turn i thought this was weird kind seemed like battery was fully drained but the battery is still new! anyway jumped started the car then when i went to hit the accelerator it kinda lagged and revs droped before they went up! and sometimes idles at 500rpm i step on gas lightly and it goes back to normal then when i tap accelerator at normal idle it idle drops again before going up . anyone had any experience! =(
pge,
Nov 7, 9:33am
The dead engine sounds like the battery terminals may be loose.Get them re-tightened.
Re the idle, I thought maybe, stepper-motor!
Anybody else any idea!
Good luck.
lazz323,
Nov 7, 9:42am
im pretty damnsure the terminals were tight =/ but yeah thanks for the input will have stepper checked. maybe idle control air valve!
ola_bitchola1,
Nov 7, 10:08am
check the idle air control valve they get gummed up could also be blown caps in the ecu
plasticboys,
Nov 7, 7:07pm
my 4AGE did a simler thing but it was when l put power up in the engine
gadgit3,
Nov 7, 11:32pm
Idle speed contorl valve on the throttle body is a common fault and carbon is the issue. Simple enough to clean out. But make sure it's not a dead plate in the battery or heavy loads on the alternator causing the low idle and slow responce. Charge battery over night check it holds above 12.5v after sitting for a few hours. Rough idle and low idle faults with a bad battery are common also. And just because the battery is new dosn't mean it's not at fault.
lazz323,
Feb 12, 9:01pm
Thanks for the input have just brought some carbureter the t body cleaner ;)
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