cold starts suck....help
 

Whenever my car sits for say more then three hours it is slow to start, not from the battery side....it just takes a long time to crank up. If it sits for a few days on end it will take like one minute of cranking to start up. The battery is strong, new plugs wires cap rotor fuel filter and fuel pump.....still haveing issues. Anyone have any ideas what this could be. I have a ZC swapped into an 1988 si crx still running the stock ecu.....got a pg7 to swap in when i get the chance though. Is there a sensor or something that is causeing this starting issue?

Re:cold starts suck....help
 

nah just drop in the pg7.

Re:cold starts suck....help
 

ok you think that could be causing this issue....the car ran fine for 12k befor it started doing this.......Grrrrr i hate minor problems like this they are so hard to diagnos.....how do i get to the ECU anyway?

Re:cold starts suck....help
 

the ecu is right where the passenger's feet go.

so you had this EXACT setup fine for 12k then started starting badly.?

Re:cold starts suck....help
 

yup....so i started replacing stuff......which is everything on that list.....

Re:cold starts suck....help
 

you said the battery is "strong" meaning what? it's new? it turns the motor so it's ok, or it's been tested?

what about air filter?

Re:cold starts suck....help
 

been tested it is like new......airfilter is new!

Re:cold starts suck....help
 

Mine used to have a cold start problem. would have to crank for like 4 sec. Didnt notice exactly what fixed it but have replaced battery and fuel filter recently and it starts within 1 sec even after sitting for an entire week.

Maybe a dirty IACV ?

Re:cold starts suck....help
 

what is that and how do i fix that bitch!

Re:cold starts suck....help
 

dump the cat (if u haven't already). That will help the motor breathe a lot better on startup.

Re:cold starts suck....help
 

can i just punch it out? how much is a new cat.....i will need to take this car through emmisions....

Re:cold starts suck....help
 

Yeah just punch it out easy and cheap.

Re:cold starts suck....help
 

will do! I have wanted to do this anyway....maybe it will help! :)

Re:cold starts suck....help
 

IACV is on the back of the Intake Manifold.

http://www.we-todd-did-racing.com/we...MXk1NDE%3D.jpg

Red circle = IACV

Re:cold starts suck....help
 

i wouldn't just punch your cat out just yet. buy a spare one and punch IT out, keep yours for emissions.. or buy a test pipe.

The proper way to punch the cat out is to knock out all the ceramic ----, then weld an exhaust pipe so it's just a straight thru shot, and exhaust doesn't bow up in the chamber creating an echo/back pressure.

I should have done a writeup when I just did then a couple months ago.. good thing more cars need it done to them :P

Re:cold starts suck....help
 

i dont have that tube on my car.......the spot where the tube would be is capped off, probably because of the intake on the car, i dont know though becuas ei didint install it. where and how much is a test pipe?

Re:cold starts suck....help
 

what tube? on the IACV??

Re:cold starts suck....help
 

yea

Re:cold starts suck....help
 

by the way thanks everyone for trying to help me figure this out