hondabooster

hey i have a 1994 honda civic but i put a 1996 1.8 vetc in it and now it revefs up then back down and i tryed the map senser but it didt work or it was a back map. can any one help me out thanks shawn

Former User

There are several possible causes:

-Dirty IACV
-Intake air or vacuum leak
-Air trapped in the cooling system

Morasso

Is it doing it at idle?

If so clean your IACV and FITV. I had the exact same problem and cleaning those fixed it. Super easy to do.

roachsboosted16

i have had the iacv problem but it was a slow oscillation in the rpms, then my injector seal popped out and i had a hissing sound and the rpms were serging pretty fast like up and down between 1500-1000 twice per second. could be other problems tho

EKway2low

u always wana try the easy first so what i would try first is adjusting ur idle srew...its the one on the throttle bodymy car was doing that after i put a skunk2 mani and i turned it down a lil bit and it fixed the problem

ke98248

iTrader: (1)

Could also be a blown Alternator/Speed sensor fuse -- that will be the culprit for part of the problems you're having.. but your speedo would work either.

DOHC4banger

i am dealing with the same problem right now with my b16 but i just found out that i got a anti freeze leak from a cracked hose...could that cause the problem cause i have tried many things already

petelsb18

try opening the bleeder on the thermostat and por coolant in tell thers no air bubbles coming out

RaWrZie

Any one have a pic showing the throttle body with the iacv/fitv?
So I know exactly what I'm supposed to be touching/cleaning.
I have '94 Civic EX coupe.

TIA.

SPD DMN

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RaWrZie &raquo;</TD></TR><TR><TD CLASS="quote">Any one have a pic showing the throttle body with the iacv/fitv?
So I know exactly what I'm supposed to be touching/cleaning.
I have '94 Civic EX coupe.

TIA.
</TD></TR></TABLE>

Hey RaWrZie... didn't I already solve this problem for you when I was trying to solve my own problem?

Same pic I used in my thread:

Top hole = IACV
Bottom hole = FITV




Rear side of the throttle body... same thing top/bottom




Just take the TB off and give it a quick inspection, the holes should go through but you might have a build up of nice nastyness in there...

GL again!

RaWrZie

Probably.
Hard to keep up with threads here.
They get lost 2-3 pages back while at work.
Didn't see it.
= (

Cool though...
I'll have look-see.
Thanks again?
=P