throttle body coolant bypass pic

Raise your hand if you still stab the gas pedal to the ground to set the choke before starting on cold mornings

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Not currently, but not too far in the past I had an old Chebby work truck, it had the knob on the dash that you manually pulled out after stepping on the gas pedal. Once you were moving and the engine started to sputter, you'd push the knob back into the dash.
 
living in a year round warm climate I bypassed mine also....im a firm believer in less is more and now I have two less coolant connections to fail.
I'll admit I hate coolant leaks on and inside the engine bay, but I frequent cold parts of CA and NV often enough that I wouldn't bypass the IAC just to spare myself a potential leak.

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Ive been handed another rough old RZN185 (JDM 3rd gen 4 runner with the 2.7 4cyl).

It was 'overheating and coolant loss'. Turned out to be throttle body gasket for the coolant bypass was blown, dropping coolant into the inlet manifold, so eliminated mine too for an easy fix (I live in the Caribbean)

However, mine is still idling way too high also over 2k. Adjusting the throttle stop brought it back to 1.2k, but still not right. I saw another thread about the throttle butterfly shaft moving and not closing properly, but mine seems ok. Any other ideas?
 
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I would start with pulling off the IAC and cleaning it as well as the basic tuneup, plugs, wires, air filter and clean the maf sensor. After that baseline reset the computer and you will have a better idea of what the idle is. Should be 600 rpm
 
thanks - just found the IAC gasket on Amazon so grabbing that and will strip throttle as soon as it arrives, and replace pipes as they are meant to be as well.
 

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