Need Help. Low idle after running the air
#1
Need Help. Low idle after running the air
I'm having a strange idle problem on my 93 4runner. After running the air then turing off the motor, on restart my idle will be very low and stall out. If I hold my foot on the gas for a few minutes then let off it will be fine. It only does this if i run the air, starts and idles fine if the air hasn't been on.
#2
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Join Date: Nov 2008
Location: CHICO, CA
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what is you idle with nothing on when the engine is fully warm?? if its below 900 you might want to bring it up to about there (I like more 990)via idle adj screw on the throttle body.
check you air filter too make sure its clean, and if its a k&n that it is not drenched in oil.
check you air filter too make sure its clean, and if its a k&n that it is not drenched in oil.
#5
Registered User
There is a VSV on the passenger fender that controls the idle up when AC is turned on. The vacuum hose routing is described here:
forward VSV (gray connector): This controls the idle up for the air conditioning and has a short vacuum hose that goes from the diaphragm to the fender side of the VSV, and a vacuum hose that goes from the engine side of the VSV to the T fitting in hose #2. There are two larger air hoses coming out of this VSV to provide extra air with the A/C on. Hose #2 goes to the black fitting on the plenum, lower right side of the 3 fittings arranged in a triangle.
https://www.yotatech.com/forums/f116.../#post51141054
The FSM procedure on how to test it is attached. Check the condition and tightness of the hoses and if nothing seems wrong, remove it and do the tests. Good luck,
Bugs
forward VSV (gray connector): This controls the idle up for the air conditioning and has a short vacuum hose that goes from the diaphragm to the fender side of the VSV, and a vacuum hose that goes from the engine side of the VSV to the T fitting in hose #2. There are two larger air hoses coming out of this VSV to provide extra air with the A/C on. Hose #2 goes to the black fitting on the plenum, lower right side of the 3 fittings arranged in a triangle.
https://www.yotatech.com/forums/f116.../#post51141054
The FSM procedure on how to test it is attached. Check the condition and tightness of the hoses and if nothing seems wrong, remove it and do the tests. Good luck,
Bugs
#7
Registered User
Bugs
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