82 280zx intial start issue
Thread Starter
Registered User
Joined: Nov 2013
Posts: 5
82 280zx intial start issue
my 82ZX N/T idles rough for the first minute then clears up with throttle. The FSM is kind of vague on checking the air control valve, can someone at least point me in the right direction? 136K miles, new fuel filter, plugs, injectors. The air flow meter checked okay.
Thanks,
Scott in S.Carolina
Thanks,
Scott in S.Carolina
Registered User
Joined: May 2012
Posts: 63
From: YUMA, AZ
Pull out your cold start Injector and clean It along with both sides of the electrical connectors for It and The Air Control Valve. That worked for me. Also check your Afm To TB Boot for Unmetered air or any where else for that matter.
Last edited by silverzxbullet; Nov 17, 2013 at 06:42 AM.
The Good Twin
Joined: Aug 2005
Posts: 20,639
From: Wild Wild West, UTAH!
^^^ This.
An n/a rough cold start is either a faulty thermotime sensor / cold start valve, or faulty / leaking air regulator.
So:
#1: After cold starting, pinch hose between throttle body and air regulator. The idle rpm should drop. If not, the air regulator is not functioning (stuck closed). If it does, move to following step:
#2: Pull cold start valve & clean. Start car, no change: test thermotime sensor (Heat / Ohm test).
FSM screen prints:
An n/a rough cold start is either a faulty thermotime sensor / cold start valve, or faulty / leaking air regulator.
So:
#1: After cold starting, pinch hose between throttle body and air regulator. The idle rpm should drop. If not, the air regulator is not functioning (stuck closed). If it does, move to following step:
#2: Pull cold start valve & clean. Start car, no change: test thermotime sensor (Heat / Ohm test).
FSM screen prints:
Thread
Thread Starter
Forum
Replies
Last Post
isoulride
300ZX (Z31) Performance / Technical
10
Jan 3, 2014 11:55 AM
moorebl
280ZX (S130) Forums
2
Apr 14, 2011 03:28 PM
Sixer
280ZX Performance / Technical
4
Apr 15, 2010 03:59 PM
Bookmarks
