d15b vtec runs like crap on cold startups.? please help.
Thread Starter
Joined: Mar 2007
Posts: 10
Likes: 0
From: Hamilton, ON, Canada
d15b vtec runs like crap on cold startups.? please help.
I have a 93 civic lx, with d15b vtec, when its cold i have to give it some gas to start it up and it wants to die for the first 15 seconds or so, after it gets warmer, not even half a minute idles fine doesnt jump around. what would cause this?? iac? its on the intake mani right? and also when my car is running at normal temp the idle is 1400.... how do i lower this?
Honda-Tech Member
Joined: May 2002
Posts: 744
Likes: 0
From: 29909
Most likely your Fast Idle Thermal Valve located on the underside of the Throttle Body.
https://honda-tech.com/zerothread?id=1564019
Also see...
https://honda-tech.com/zerothread?id=1844067
To get the idle back down to normal you should fix these issues then reset your base idle. Basically, disconnect your EACV power plug and then use the Throttle Body Idle Screw to set to spec.... ~600-750 rpm I think. Turn motor off, reconnect EACV and reset ECU.
https://honda-tech.com/zerothread?id=1564019
Also see...
https://honda-tech.com/zerothread?id=1844067
To get the idle back down to normal you should fix these issues then reset your base idle. Basically, disconnect your EACV power plug and then use the Throttle Body Idle Screw to set to spec.... ~600-750 rpm I think. Turn motor off, reconnect EACV and reset ECU.
Thread
Thread Starter
Forum
Replies
Last Post
Iloveyourhonda92
Acura Integra
2
Apr 11, 2015 07:46 PM
ON Cold start-up, my idle is stays too low and wants to die, it use to be at 2000rpm until it warmed
Maxcapacity
Honda CRX / EF Civic (1988 - 1991)
1
Jun 10, 2008 06:11 PM
sohcVtec_1
Honda Accord (1990 - 2002)
4
Jun 3, 2004 07:37 PM
