The first thing to check for rough idle and weak acceleration of a 1991 Tercel is the vacuum system for leaks. Also check to make sure that the EGR valve is not clogged, and that the timing has not jumped.
compression you should check that first or faulty injectors maybe look me up on youtube THA REAPER 94 tercel
change the head gasket the oil pan and head gasket and check the fan fuse i had the same problem this helped everything.
it mounted on the throttle body
There are a number of reasons why a 1991 Toyota Corolla engine would stop running after startup. It could the idle control, an EGR leak, or low fuel pressure.Ê
The idle speed for a 1991 Toyota Land Cruiser with the 4.0 3FE engine should be set at 650+- 50 RPMs. This is adjusted by the screw just above the throttle position sensor on the middle of the intake plenum. I have a 1991 LC and this is where I adjust after the timing is set.
Check fuel delivery pressure Should be: at idle 13-20 psi with ignition on and motor off 23-31 psi
The location for the idle switch of a 1992 Toyota Previa mini van can be found in the Toyota Previa Auto Repair Manual 1991 thru 1995. This can be purchased from the Toyota dealership.
how do you adjust the idle on a 2002 toyota van
you can adjust it via the idle control valve.
Look and listen for a vacumn leak under the hood.
the RPM should idle 700 - 900
clean or replace your idle air control valve.
How high is your idle? idle should be 800rpm good oil pressure is obtained at this idle
check your vacuum hoses check your vacuum hoses
You dont adjust the Idle disconnect the battery for 10 mins and reconnect and the computer should relearn it idle .
The idle speed is set at the factory and is NOT adjustable.
smash it into the wall
the idle tensioner and or the distributor.
You don't. If the idle is not within factory spec there is a problem that needs to be diagnosed, such as the idle speed control unit for example.
look on the throttoe body and back the idle adjusting screw out the screw is a flat head some times it is good to take it out and cleane the end off carbon builds up on the scew hope this helps
It is on the throtle body.
It is nonadjustable. It is controlled by the computer.