Hey, i have a 1994 civic VTI (B16a2) and have noticed a problem over the last couple of days. Ive had the car for over a year and had no problems... untill now. Heres the problem, when driving (out of vtec before 5500rpm) at a steady pace, if you give it a slight bit more gas the car kinda bogs for a while then picks up normally, it bogs intermitantly and for differant amounts of time (like 1-10secs) if you give it full gas it seems to be fine everytime, and if it bogs and you give it full gas it overcomes it straight away. I changed the fuel filter, put fuel cleaner though it, cleaned the plugs and checked the dizzy and plugs, but its still doing it.
could it be the EGR valve ?
does mine have one and were is it?
or could it be the ICV? i have noticed sumtimes the revs drop to 500rpm then jump up to 800rpm again when you brake, and have been told the ICV are prone to go on the old hondas.

Thanks for any help
ste
175bhp @ 7900rpm 121.1 f/lb torque 7000rpm
(not too bad for filter and decat exhaust!)

 

I forgot to mention that my manifold gasket is leaking too, that couldnt cause it cud it?

 

uhh which manifold? intake or exhaust? if its intake yea that would cause a problem... go get new gasket and make sure its tight to torque specs then check for leaks again... btw how do you know it leaks? do you hear something? feel something?

 

Its the exhaust manifold thats leaking (standard manifold) i know coz its black on the heat sheild and round the manifold on the head. i have also checked the injectors, ther not leaking at all.

 

Its still doing it!! Has any1 got any other ideas? what about the air mass sensor or ICV?

 

Right i think ive got it sussed now, it gotta be one of the following,
1-Throttle Positioning sensor.
2-Air Map sensor.
3-Air mass sensor

I'm pretty sure it the first thing ive listed, question is now, because the TPS is on the thottle body and not removable from it (seems to be riveted to it) Is the thottle body off the 125bhp sohc 1.6 ESI EG civic D16**?? going to fit mine? i know the inlet manifolds are differant where they bolt to the head but they look similar with both being MPI, im just not sure if they're differant bores etc? I know the ITR T/B will fit and the standard or skunk2 etc B16a1/b16a2/b16b2 etc will fit but there not easy or cheap to get hold off!!
Is anyone selling one i can buy?

Thanks for any help!
STE

 

Right im seriously gettin a headache now! i had it plugged into a diagnostics machine and its not showing any faults!! what else could it be?

 

shit sucks.....iam having the same problem

 

i have the same prob and i was told to try a new fuel pump relay....i have not done it yet but thats what im going to be trying

 

Mine does it too, but not until the engine gets warm. I just replaced the fuel filter, plugs, wires, cap, and rotor, but it still does it.