11-23-2015, 08:49 AM
Vitara JLK or Sidekick with G16A engine 8 valves
seems like all along its and air leak and more issues....
but running rich is not the TB bad ! not ever !, all air leaks cause fast idle but the fuel mix is perfect (hot) with all air leaks (vacuum leaks) the MAP sensor does that magic, it measure plenum vacuum, the ECU then Calculates the correct fuel , matching the vacaum (baro readings)
or plenum baro or as many say , plenum baro pressures, 0 pressure is max vacuum.
the 02 sensor then kicks in and sets air fuel ratios, even more perfectly no matter the air leaks, see why?
this is no MPI engine where leaks cause lean, this NOT MPI, and not MAF engines. at all. (a world of difference)
unless the old IAC is bad (stuck open or closed), or the throttle bore damaged, then all 3 of those TSBs were good, every one.!
sorry but that is a fact. (dash pot device too must work. retracts is what it does and very easy to see that action. and hear it drop. )
running rich has many causes..
o2 reading wrong hot. only, and only at idle and only at light cruse, and is disabled accelerating and at wide open throttle.
exhaust leaks near that 02 make it read max 0xygen (reads 0v all the time) and the engine goes to , MAX RICH. (seeing 02 stuck max lean)
fuel pressure too high
a bad ecu, in limphome or backup mode, or crashing (bad cap's)
leaking injector
ECT reads cold all the time ,
IAT reads cold all the time.
(assumes spark is good and timed right and cam timed right and 150psi or more on all cylinders.
end rich,
and besides all that, you have an air leak.
the air leak and fast idle is ONLY a distraction, to rich symptoms.
where the leak is? is below that throttle plate some where.
if all hoses do do not leak end to end (that means the diaphrams on the end too or VSV or what ever.... is there.)
the the intake is cracked or has a bad intake manifold to head gasket there. (seem them missing too,....)
there is a leak there
the proof.
you had zero air supply and it ran. end story. you have a leak,. for sure.
and is only ONE problem.
seems not the WORST.
seems like all along its and air leak and more issues....
but running rich is not the TB bad ! not ever !, all air leaks cause fast idle but the fuel mix is perfect (hot) with all air leaks (vacuum leaks) the MAP sensor does that magic, it measure plenum vacuum, the ECU then Calculates the correct fuel , matching the vacaum (baro readings)
or plenum baro or as many say , plenum baro pressures, 0 pressure is max vacuum.
the 02 sensor then kicks in and sets air fuel ratios, even more perfectly no matter the air leaks, see why?
this is no MPI engine where leaks cause lean, this NOT MPI, and not MAF engines. at all. (a world of difference)
unless the old IAC is bad (stuck open or closed), or the throttle bore damaged, then all 3 of those TSBs were good, every one.!
sorry but that is a fact. (dash pot device too must work. retracts is what it does and very easy to see that action. and hear it drop. )
running rich has many causes..
o2 reading wrong hot. only, and only at idle and only at light cruse, and is disabled accelerating and at wide open throttle.
exhaust leaks near that 02 make it read max 0xygen (reads 0v all the time) and the engine goes to , MAX RICH. (seeing 02 stuck max lean)
fuel pressure too high
a bad ecu, in limphome or backup mode, or crashing (bad cap's)
leaking injector
ECT reads cold all the time ,
IAT reads cold all the time.
(assumes spark is good and timed right and cam timed right and 150psi or more on all cylinders.
end rich,
and besides all that, you have an air leak.
the air leak and fast idle is ONLY a distraction, to rich symptoms.
where the leak is? is below that throttle plate some where.
if all hoses do do not leak end to end (that means the diaphrams on the end too or VSV or what ever.... is there.)
the the intake is cracked or has a bad intake manifold to head gasket there. (seem them missing too,....)
there is a leak there
the proof.
you had zero air supply and it ran. end story. you have a leak,. for sure.
and is only ONE problem.
seems not the WORST.
http://www.fixkick.com