Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

HELP: Fast Idle thermo Valve issues..search is down

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Old Oct 17, 2004 | 12:02 PM
  #1  
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Default HELP: Fast Idle thermo Valve issues..search is down

Alright..

Recently my idle has been at like 1400 rpms.

Motor: D16Z6
Mods: 6.5lb fidanza flywheel,ebay cai,dc header,dc catback, apexi vafc, act hdss clutch kit

I know everyone says a lightweight flywheel will mess up your idle,etc

Well my lightweight flywheel didn't effect my idleing issues at all.. started up it was ideling at 950 rpms.. right where it should be.

Recently..

When i start my car up in the mornings (cold start) it idles at like 1400 rpms and then when it warms up it idles at 950.

Ok so then i can rev my motor up and then it won't drop back down to normal idle.. it goes to like 1500 then 1400and then wants to stay at 1200.

I've took my IACV out and breakcleaned it good and also reset and re adjusted my idle to helms manual specs.

A few people have said it may be FITV but i know **** about it and h-t's search is down right now.

Does anyone know how i can test my FITV or possibly what it could be?

TIA

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Old Oct 17, 2004 | 12:22 PM
  #2  
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Default Re: HELP: Fast Idle thermo Valve issues..search is down (Jimmy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jimmy &raquo;</TD></TR><TR><TD CLASS="quote">Alright..

Recently my idle has been at like 1400 rpms.

Motor: D16Z6
Mods: 6.5lb fidanza flywheel,ebay cai,dc header,dc catback, apexi vafc, act hdss clutch kit

I know everyone says a lightweight flywheel will mess up your idle,etc

Well my lightweight flywheel didn't effect my idleing issues at all.. started up it was ideling at 950 rpms.. right where it should be.

Recently..

When i start my car up in the mornings (cold start) it idles at like 1400 rpms and then when it warms up it idles at 950.

Ok so then i can rev my motor up and then it won't drop back down to normal idle.. it goes to like 1500 then 1400and then wants to stay at 1200.

I've took my IACV out and breakcleaned it good and also reset and re adjusted my idle to helms manual specs.

A few people have said it may be FITV but i know **** about it and h-t's search is down right now.

Does anyone know how i can test my FITV or possibly what it could be?

TIA

</TD></TR></TABLE>

Simple. Start up the car, let it warm up. Remove the intake pipe just before the throttle body. Stick your finger over the LOWER hole on the left hand side of the throttle body. There should be NO suction. If there is any, then the FITV is leaking and messing things up. You can remove it and screw the plunger back in in most cases. In severe cases you will need to replace it with another unit.

EDIT: The lightweight flywheel should not effect idle at all. I have run them on 3 of my engines with no problems ever.
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Old Oct 17, 2004 | 03:47 PM
  #3  
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Default Re: HELP: Fast Idle thermo Valve issues..search is down (Hybrid93Eg)

let it warm up, is the most important part of the above test. Make sure you do that.
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Old Oct 17, 2004 | 04:45 PM
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Default Re: HELP: Fast Idle thermo Valve issues..search is down (Hybrid93Eg)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid93Eg &raquo;</TD></TR><TR><TD CLASS="quote">

Simple. Start up the car, let it warm up. Remove the intake pipe just before the throttle body. Stick your finger over the LOWER hole on the left hand side of the throttle body. There should be NO suction. If there is any, then the FITV is leaking and messing things up. You can remove it and screw the plunger back in in most cases. In severe cases you will need to replace it with another unit.

EDIT: The lightweight flywheel should not effect idle at all. I have run them on 3 of my engines with no problems ever.</TD></TR></TABLE>

Ok you lost me..

I'm not 100% sure what i done was right BUT

I took my intake off and stuck my hand under the throttle body on the left side and there was no suction..

Thanks for your help



Anyone else?
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Old Oct 17, 2004 | 04:48 PM
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Default Re: HELP: Fast Idle thermo Valve issues..search is down (Jimmy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jimmy &raquo;</TD></TR><TR><TD CLASS="quote">

Ok you lost me..

I'm not 100% sure what i done was right BUT

I took my intake off and stuck my hand under the throttle body on the left side and there was no suction..

Thanks for your help



Anyone else?</TD></TR></TABLE>

no no.. Not UNDER the throttle body, IN the throttle body. There are two holes on the left hand side of it. Put your finger over the lower one and check for suction.
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Old Oct 17, 2004 | 05:00 PM
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Default Re: HELP: Fast Idle thermo Valve issues..search is down (Hybrid93Eg)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid93Eg &raquo;</TD></TR><TR><TD CLASS="quote">

no no.. Not UNDER the throttle body, IN the throttle body. There are two holes on the left hand side of it. Put your finger over the lower one and check for suction.</TD></TR></TABLE>

alright..

i stuck my finger in the throttle body and felt the bottom hole..

It is sucking in air but not as hard as the one on the top is..

Now that we figured it out..

How do i fix it?

Oh and btw- i burnt the **** outta my finger.. you didn't give me a warning that is was going to be hot..

haha
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Old Oct 17, 2004 | 05:15 PM
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Default

TTT..

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Old Oct 17, 2004 | 05:20 PM
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Default

take the Fast idle thermo valve off (easier to just take the throttle body off) and screw it in all the way (itll make sense when you see it). If you hear anything flopping around inside it when youre moving it around, its broken (like mine was.)
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Old Oct 17, 2004 | 06:03 PM
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Default Re: HELP: Fast Idle thermo Valve issues..search is down (Jimmy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jimmy &raquo;</TD></TR><TR><TD CLASS="quote">

alright..

i stuck my finger in the throttle body and felt the bottom hole..

It is sucking in air but not as hard as the one on the top is..

Now that we figured it out..

How do i fix it?

Oh and btw- i burnt the **** outta my finger.. you didn't give me a warning that is was going to be hot..

haha </TD></TR></TABLE>

I figured common sense would tell you that it would be hot... seen as how you are supposed to bring the engine up to normal operating temp. You will need to either replace the FITV, or remove it, disassemble it, and tighten up plunger on the end of it.
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Old Oct 17, 2004 | 06:53 PM
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Default Re: HELP: Fast Idle thermo Valve issues..search is down (Hybrid93Eg)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid93Eg &raquo;</TD></TR><TR><TD CLASS="quote">

I figured common sense would tell you that it would be hot... seen as how you are supposed to bring the engine up to normal operating temp. You will need to either replace the FITV, or remove it, disassemble it, and tighten up plunger on the end of it.</TD></TR></TABLE>

alright..

I followed these directions.. reassembled it and put the coolant lines back on..

Started it up and it idled at 1200 perfect..

I turned the idler screw down a notch and then reset the idle by pulling the 7.5 amp backup fuse then started it up.. now it runs idles perfect at 750 rpms..

nice and smooth!

Thanks!!

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