beqa16v

did a coolant bypass mod a while ago and my idle is awfull when the engine is hot. i think its because of different information from different sensors. as the coolant is not heating the IM, ECU gets different info from different temperature sensors and rises revs, thinks the engine is cold. when i stop my car with hot engine for a whle, like 15mins and then turn it on again the idle is good. i guess when standing still with hot engine, the air is not going through IM cooling it down an it gets hot by engine temperature and the sensor on IM tells ECU its heated up. If i start driving after some time IM gets cool and the idle starts fluctuating again. i searched and read here that you can adjust the idle by turning something on TB with a screwdriver. anybody has pics? or can tell exactly where is that thing?

esedulerp5tenin

i also had a horrible idle problem w/ the coolant bypass trick.
i put everything back to normal the next day... haven't had a problem since.

lude98SH

I actually threw a code after i did mine Changed it all back and everything has been fine since.

h22aBB4

when i first did the mod, the rpm would rev up to 1500, drop to 1k, rev up, and drop and keep on goin- but it hasnt done that since. Maybe ya just gotta wait it out

lude98SH

haha well it wasnt just a code the car idled horrible and the the rpms would rise and fall while trying to catch the clutch and slams each gear ..... it made no sense

championshipwhite93si

sounds like the fitv

i completely gutted mine out and stuck a plate between it and the throttle body and solved that problem... FITV FTL

lude98SH

Why dont u just take the FITV out..isnt that basicly the same idea ?

hondaccord

blocking it off and bypassing the lines is the best way to do it. you could just fab a plate and a gasket, but I couldn't get mying to stop leaking.(vacume) the reason why you dont want to just take it off with out some sort of blocking plate, is be cause it has two large holes for air to by pass the throtal plate when the engien is still cold. of corse after the temp rises it expands the pistion, and blocks the hole.

beqa16v

thanks to all
when i did the mod i closed the holes on TB with a small silicone hose, put one side on the inlet side and the other on the outlet side. but the idle is stil jumping. so where is that thing, by which i can adjust the idle with a screwdriver?

hondaccord

one side of the fitv has a flat plate held on by two, or three screws-bolts, pull that off, then you should see the adjustment right there. if that doesn't work, you might just have to replace it. also a iac can cause this prob. try takeing off you intake , and plugging each of the two holes on you throttal body, one at a time. don't cover it completly, it will stall out your car, but cover it enough, with your finger, and it should leavel out your idle, on one or another that is.

8_6 luder

This should fix the problem for sure . I did the mod myself , got the crappy idle and followed up with the second mod , lol .
http://<a href="http://web.archive.o...00...d.htm</a>


Modified by 8_6 luder at 5:52 AM 1/2/2007

GoldLudeRay

sweet i am going too try this, i have the same prolem with mine when i bypass it

8_6 luder

You're supposed to gain an extra 8 on this mod alone , to keep it is a good bonus.

Hawkze_2.3

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 8_6 luder &raquo;</TD></TR><TR><TD CLASS="quote">You're supposed to gain an extra 8 on this mod alone , to keep it is a good bonus.</TD></TR></TABLE>

An extra 8 seconds before the reaches operating temp?

I know it's damn sure not 8hp from a little thing like this...

kornerk12

What exactly is that doing?

8_6 luder

8hp

prelude1897

when you did the mod, did you crack open the coolant bleeder valve? If not, you have to do that and then your idle problem should go away. When I did the mod, my idle would go up and down cause I had forgotten to crack open the coolant bleeder valve. I did that, and I haven't had the idleing problem since.

98vtec

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 8_6 luder &raquo;</TD></TR><TR><TD CLASS="quote">8hp </TD></TR></TABLE>

on an v12 maybe......

where did you get this info about 8hp from?

anyway, i dont see how so many people have problems with this. You guys are plugging the FITV ends right? I have my IACV looped as well, dont know if that has anything to do with it

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kornerk12 &raquo;</TD></TR><TR><TD CLASS="quote">What exactly is that doing? </TD></TR></TABLE>

its blocking the hot coolant from entering the FITV and heating the throttle body. Cooler air induction = more power.

Hawkze_2.3

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 8_6 luder &raquo;</TD></TR><TR><TD CLASS="quote">8hp </TD></TR></TABLE>

Ahahahaha........No.

beqa16v

I'll take the picture of my mod and post it here so you can tell me wether its right or not

and guys if somebody has pics of it in stock form please post so i could put it back as it was

8_6 luder

Its been said that people have seen 8 additional hp by dramasticly ruducing the intake temperture by using this coolant bypass mod ( the cooler the air the more power you will recieve ) hencing the reason cold air intakes are such a big deal. When I completed the mod my car felt alot stronger . Im not saying that I felt 8 more horses as I dont know for sure but it was definatly a noticable difference . The 8hp increase was a quote from this link , not because I did it and dynoed my car .http://web.archive.org/web/200...s.htm

ninja 6

what is the point of bypassing the fitv?

i never understood. so that the car doesn't warm up more efficiently? I don't get it...

Hawkze_2.3

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 8_6 luder &raquo;</TD></TR><TR><TD CLASS="quote"> The 8hp increase was a quote from this link , not because I did it and dynoed my car .http://web.archive.org/web/200...s.htm</TD></TR></TABLE>

Sadly, that guy also says you get more power from removing the filter in the injectors

I would think you might get 8hp from a CAI, heat shield IM gasket, coolant bypass and tuning at the top of the rpm range...just my opinion though.

Can't hurt to keep the TB cooler that's for sure.

hondaccord

it will give you some more power from the cleaner, burning, with the cooler air, but I don't think 8 hp. also it will be more then 8 seconds longer to warm up. at least I thought so when I did it. It is a free mod though, and my friend with a mazda speed protages did it too, and he said it is rather commen for mazda owners to do.