quickchris

ok,,,,i have done alot of h22 swaps in civics,accords,ludes.Does anybody know why there is a surging problem at low rpm at light throttle?It gets bad sometimes mostly when hot or humid outside.To top it off it is only on 90-93accords(that i have done)and 92-95 civics(that i have done)but not on the 4 92-96ludes with h23s (that i have done)that problem does not happen?Is it because the h23s have a factory shielded wraped knock sensor wire?I have always used shielded wire for the swaps and put the shielded part of the wire on the thermostat housing is this not correct?I use factory honda wire from, of course other engine harnesses. Any help would help thanks.

poison

Nah, none of that has to do with that. Mainly the cause of it is the idle screw on top of the throttle body, the fast idle valve (under the throttle body).

Make sure the white diaphram on the fast idle valve is all the way tight, and that should correct your problem.

quickchris

what if u have a str t/b?my car is a 91lx accord coupe h22 and it does it bad.There is no fast idle valve on those.just my .02

Newman

Most likely vacuum leak (replace throttle body gasket) or it's a bad throttle body. I've now seen quite a few "bad" H22A throttle bodies that have gaps where the throttle plate meets the walls on the throttle body, causing a bad vacuum leak and making the idle surge. But most likely, if you've cleaned your IACV and unplugged it and reset it, a gasket needs to be replaced.

hondaZvic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by poison &raquo;</TD></TR><TR><TD CLASS="quote">Nah, none of that has to do with that. Mainly the cause of it is the idle screw on top of the throttle body, the fast idle valve (under the throttle body).

Make sure the white diaphram on the fast idle valve is all the way tight, and that should correct your problem.</TD></TR></TABLE>
ahhaha
i have this same problem sorta.... but mine tends to be at nite when its cold ro rainy, lights and rear defroster on.
thanks brandon, i believe this will help me too. lemme go try tomorrow.

poison

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hondaZvic &raquo;</TD></TR><TR><TD CLASS="quote">
ahhaha
i have this same problem sorta.... but mine tends to be at nite when its cold ro rainy, lights and rear defroster on.
thanks brandon, i believe this will help me too. lemme go try tomorrow. </TD></TR></TABLE>

haha, yeah I know how that is. I used to have the same problem as well.

H22EK

you have a manual ecu?AT ecu will cause this also, i had one in mine for a while and it would do it in the cold for a while then when warmit would stop

hondaZvic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by H22EK &raquo;</TD></TR><TR><TD CLASS="quote">you have a manual ecu?AT ecu will cause this also, i had one in mine for a while and it would do it in the cold for a while then when warmit would stop</TD></TR></TABLE>

i dunno if ur referring to me or the other guy, but mine is manual...
im glad to see other people had the same problem as me, and fixed it.. i was beginning to think my car was cursed.. ahhahaha..

quickchris

problem has been with m/t ecu's,,,jdm and usdm.Does anyone know if a hks grounding kit might help?

htchbak

I HAD THAT PROBLEM WITH MY H22. except it would start surging after 3000rpm
i checked and cheked everything for 3 months with no luck
finally i put a new ecu in and it worked awsome

....might be ur ecu dude..... if u got access to another one plug it in and take it for a run..