if your IACV is messed up does your idle keep going from 1000 to 1500? or if not, then what could this be, i thought at first it might be a leak, but when i changed throttle bodies it finally let me go past 3500 rpms like it had not let me in the beginning, if anyone has any good advice or already knows the problem please help me out! thanks!!!!!

 

bump for confusion.

 

morning bump, doesnt anyone know anything about the IAC valve?

 

To diagnose the IACV, unplug it and see what happens.

More than likely it's your FITV, located under the throttle body. Do a search for 'FITV' or 'Fast Idle Thermo Valve'

 

i agree, sounds like the problem i had, i just replaced it with the one i had off my old motor and my revs went to normal.

 

When Check Engine light is on. With the service connector jumped, CODE 14 is indicated. It is highly likely a fault relating with the IACV.

The IACV is a component whereby when faulty is the most probable cause to most idle-linked problems. The problem can be symptomatic and may not even trigger the Check Engine light. The list goes:

1. When cold fast idle out of spec (1,000 - 2,000 rpm)
2. Rough idle
3. When warm RPM too high
4. Idle speed is below specified rpm (no load)
5. Idle speed does not increase after initial start up
6. On models with automatic transmission, the idle speed drops in gear
7. Idle speed drops when air conditioner is ON
8. Idle speed drops when steering wheel is turning
9. Idle speed fluctuates with electrical load
10. Frequent stalling while warming up
11. Frequent stalling after warming up

When the two terminals on the IACV are measured with an Ohm-meter, it must vary between 8-15Ω. If not, the IACV must be replaced.

 

Very rarely does an IACV fail though...I'd be willing to say 95% of the time it's the FITV.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DaX &raquo;</TD></TR><TR><TD CLASS="quote">Very rarely does an IACV fail though...I'd be willing to say 95% of the time it's the FITV.</TD></TR></TABLE>
i guess i am part of that 5% because it was my IACV...but i need the right one..i just got and LS/B16/D16 IACV...JUST MY ******* LUCK!!!