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Dipping Idle & Pickup Hesitation

Posted: Thu Nov 14, 2013 5:55 am
by Cutz
Word up boys,

got a real nagging problem with my H22 as it's ruining the drivability of my freshly converted EJ-H22 civic.

Basically the 2 main issues are:

1. Idle dipping on deceleration to 600rpm, IACV can't catch revs in time...feels a little slow to react but can't be sure. i've got poly mounts so I feel this soooo much more!
2. Minor hesitation as revs initially blipped, generally have to blip throttle everytime i pull off regardless.

I'm pretty sure both these issues are connected, I do get a little bit of an idle hunt but nothing major.

I've checked for the most common things (vacuum leak & coolant air pocket) and I'm 99% sure this isn't the case.
dizzy, plugs, arm, coil are all new
timing is spot on
idle has been increased slightly due to TSB regarding oil pressure @ low rpm's

going to do some more checks today but has anyone got any quick ideas??

Posted: Thu Nov 14, 2013 9:12 am
by ADS1
A leak in the mani or downpipe could cause this, especially if near o2 sensor(I had this).

Posted: Thu Nov 14, 2013 9:18 am
by Merlin
is it just a standard prelude H22? No ATR intake manifold or anything? Do this happen while cold or hot or both?
ADS1 wrote:A leak in the mani or downpipe could cause this, especially if near o2 sensor(I had this).
I had this too on a previous Lude. My flexi pipe had a hole in it.

Posted: Thu Nov 14, 2013 2:12 pm
by Cutz
Merlin its a standard h22a jdm at the mo,
Downpipe back solid fabrications 2.5" system
Ps delete
Light flywheel &:pulleys
Hondata intake gasket
Induction kit
Spoon chip & p13

Gonna borrow bucks420's hondata s300, hopefully ill be able to spot something in the graphs hmmm
Cutz

Posted: Thu Nov 14, 2013 9:28 pm
by Bri
CUTZ how the drokk are ya? I Have same thing but it is slight. it could be either IACV or the one that drokked my head for months which was ignitor coil in the dizzy, do a dizzy swap and if it goes then you know. Make sure you got a strobe honkey.

Posted: Thu Nov 14, 2013 9:38 pm
by mercutio
cutz welcome back you still got that 4g bonnet :lol: :lol:

Posted: Thu Nov 14, 2013 10:26 pm
by Cutz
the bonnets gone mercutio...it hung around for ages and we resprayed and fitted it to a mates 4g,

he scrapped the car but i did manage to grab the carbon vents before it got destoryed though ;-) still sitting in my garage...

dizzy's been sorted bri, new cap, rotor arm, leads, coil, timings perfect, no vacuum leaks, fitv works fine it;s bloody gay

i've replaced EVERYTHING in this build...i really need to do a build thread but i just cant be arsed!

Posted: Thu Nov 14, 2013 10:34 pm
by mercutio
oh you selling the vents then :lol:

Posted: Thu Nov 14, 2013 10:49 pm
by Cutz
mercutio wrote:oh you selling the vents then :lol:
perhaps....

Posted: Sun Nov 17, 2013 7:08 pm
by Bri
change the dizzy itself, honestly, I went through everything, even to the fuel pump. It took me months of searching and swearing and head scratching.