C4wrx

sounds like the o2 sensor

slvrcivic97

yeah, i have that same problem with my 97 dx except I don't have the swap, I only have the mini-me swap. Anyways, when I first start my car up for the day, it runs really great and vtec xover is very noticeable and pulls, but after the car is warm, vtec is harder to feel and it is alot harder to sound...It doesn't have a crisp engagement like when it's cold. I'm lost too.

Blazin Si

i get a hesitation/stumble/whatever like that also...

only when in low RPM's and accelerating.

i haven't been able to figure it out.

SpyderZEX

I pm'd Tom in hopes that he will be able to help us diagnose the problem.

tvrsir

i i would think that you have injector problems are all cylinders missing. take the cap out and see if that's a problem. also check the headgasket do a compression test .

SpyderZEX

Already changed my injectors.

djay86

it was the spark plugs.. thank god.. finally..

thanks guys!

tour de france turbo

i just want to say thank you to the HT poster who helped me through this problem, i would have been lost if not for you.

hondamagic98

i have a obd1 gsr swap and i have no problems at all.....

thehatchninja

i'm having the same problem as you guys... 94 JDM GSR swap

SpyderZEX

Changed the plugs, and still having the problem.

so..... Bump

slowdx

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hatch22 &raquo;</TD></TR><TR><TD CLASS="quote">note to self dont buy a obd1 gsr engine</TD></TR></TABLE>

note to self my obd1 gsr will own your h22 hatch

AMG

Ok just to remind everyone:

Its not very smart to run your car hard or even to hit vtec when your engine is

cold. Let it warm up first before you cross-over , then again what do I

know, treat your motor how you like.

Now as for the problem.....Thats very odd, heat soak wouldnt be able to make

your car go from running good to misfiring/running like ****.

* However for the kid who said "note to self, dont buy a B18C......you might want to research a little more before you make a comment like that. Also to the person who said that they couldnt here vtec as well and it didnt pull as well when it wrmed up, its only natural for the car to run faster when it cold and loose a couple hp's when it warms up, due to the heat generated by the engine into the intake.
just my 0.2

jensen

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hatch22 &raquo;</TD></TR><TR><TD CLASS="quote">note to self dont buy a obd1 gsr engine</TD></TR></TABLE>

Note to self, tune your obd1 gsr engine for best results.

daniel_traj

biggg bump.
engine is b18c7 in AUDM dc2r
how were the problems resolved guys? getting this problem now..

will be fine when COLD then in operating temperature it will bog/splutter/misfire.. ONLY when its cold and between 2-3krpm... fine above 3 all the way to 9k

really frustrates me!!! plugs are also white, but car is drinking too much? how does that work!!! NO engine lights of any sought. still pulls in vtec.

at the traffic lights id be waiting, then i take off and it just completly bogs down and the revs drop to around 600rpm but does not stall.. then i got to pump the gas to revive the revs up to above 3k..

any help PLEASEEEEEE

Former User

You won't get replies in this old thread. Make your own and check the O2 sensor. \thread