Question about 1999 Suzuki Vitara
My 1993 vitara jlx wont idle wat can be the cause of this thanx alan.
Check your air idle control valve, check for the wires to be fretted or broke, and also check the vacuum lines to it.
The air idle control valve mey be dirty and a good cleaning with throttle body clean through the throttle body may help clean the carbon build up.
If there is a Auto Zone, have the Vitara scanned for a DTC code.
Here is a few things you can do.
Checking the IAC (it's called the ISC on Single Point TBI)
It is screwed to the throttle body, and has a 2 pin electrical connector) with an Ohmmeter - the solenoid should be 11 to 14 ohm. If not, replace.
To test the IAC / ISC
Use a Duty Meter, and adjust the air adjust screw to get 50%. If the revs are not right at that point, adjust some more to try to get them correct, but if the duty goes below 28%, a vacuum leak is highly likely.
Air Adjust screw for TBI / Single point look on the Throttle Body, just below the fuel line and maybe an inch to the left of the Fuel Pressure Regulator - it looks like a cross head screw into the TB.
The 8v (Single Point / TBI) uses a throttle opener device to open the throttle extra during starting. When the engine starts to run, a vacuum line is applied to the device through a vacuum servo valve, controlled by the ECM. The vacuum closes the throttle opener, to bring the revs down to normal. The ECM will operate the VSV after about 10 sec from engine start (less if the coolant is warm).
Try these things for now and keep me posted. good luck.
Posted on Jun 01, 2009
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Posted on Jan 02, 2017
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