block your throttle body coolant
09-03-2006, 06:44 AM
#121
I've always felt that the idle should be artificially high since the IAC doesn't see warm coolant and thinks it needs to keep idle speed elevated.
The IAC is not a sensor,it only does what the ECU tells it to do, the ECU receives data from the all the sensors,ECT,IAT and such and and then tells the IAC what to do, i think they call the IAC a actuator,this is my understanding of it all anyway.....Pete
09-03-2006, 07:38 AM
#122
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I will be doing this mod also once I have time to collect the parts...I did this to my boosted civic and ran it for about 4 years with no problems at all..It also gets cold here in North Georgia and I never encountered a problem with stuck idle and such
09-03-2006, 08:06 AM
#123
Originally Posted by Hondassport,Sep 3 2006, 08:44 AM
The IAC is not a sensor,it only does what the ECU tells it to do, the ECU receives data from the all the sensors,ECT,IAT and such and and then tells the IAC what to do, i think they call the IAC a actuator,this is my understanding of it all anyway.....Pete
09-03-2006, 10:19 AM
#125
You know, the S2000 IAC is unlike any other honda I'm familiar with. The ECU controls it using variable current. All other honda's (I've looked at) use stepper motors (D16's) and a pulse width modulated solenoid that changes duty cycle to change average airflow (B series engines).
The S2000 one looks like a spring loaded valve that opens a set amount for set amounts of current.
Why they warm the IAC is what we've mentioned before. To prevent icing in wet 30-40 degree conditions.
The S2000 one looks like a spring loaded valve that opens a set amount for set amounts of current.
Why they warm the IAC is what we've mentioned before. To prevent icing in wet 30-40 degree conditions.
09-03-2006, 10:41 AM
#126
You know, the S2000 IAC is unlike any other honda I'm familiar with. The ECU controls it using variable current. All other honda's (I've looked at) use stepper motors (D16's) and a pulse width modulated solenoid that changes duty cycle to change average airflow (B series engines).
The S2000 one looks like a spring loaded valve that opens a set amount for set amounts of current.
Why they warm the IAC is what we've mentioned before. To prevent icing in wet 30-40 degree conditions.
The S2000 one looks like a spring loaded valve that opens a set amount for set amounts of current.
Why they warm the IAC is what we've mentioned before. To prevent icing in wet 30-40 degree conditions.
09-03-2006, 02:40 PM
#127
That's interesting...I learned something new today. Guess this sort of confirms it's OK to leave the IAC/TB/IM bypassed throughout the winter, unlike other Honda's.
09-03-2006, 03:43 PM
#128
Former Moderator
The S2k's IAC is a rotary valve IAC. It's the same type used on the 3-3.5L V6's. A rotating valve varies the air volume bypassed to adjust for additional engine loads (such as AC, and alternator output) and cold start idle RPM.
09-02-2007, 10:23 PM
#129
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Originally Posted by triumph87,Aug 20 2005, 11:26 AM
Where can i find the ball berings??? i went to home depot and they didnt have them
