Failed Emissions on a 89 Civic DX
Thread Starter
Joined: Mar 2002
Posts: 850
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From: Portland, OR, USA
Failed Emissions on a 89 Civic DX
OK...i took it in....and got:
THC NOx CO
MAX: 2.00 3.70 32.0
Read: 2.79 4.46 30.2
I am thinking the cat. I advanced the timing and failoed even worse. Any suggestions? Thanks
THC NOx CO
MAX: 2.00 3.70 32.0
Read: 2.79 4.46 30.2
I am thinking the cat. I advanced the timing and failoed even worse. Any suggestions? Thanks
Honda-Tech Member
Joined: Jan 2000
Posts: 6,212
Likes: 2
From: Toronto, Canada
Re: Failed Emissions on a 89 Civic DX (CivicEK.PDX)
retard the timing as much as you can and have it re-tested...........make sure the engine/cat converter is good and hot before you go in for the re-test........
Honda-Tech Member
Joined: Jul 2001
Posts: 637
Likes: 1
From: Milford, Ma., USA
Re: Failed Emissions on a 89 Civic DX (CivicEK.PDX)
Yeah, rev that bitch out so the cat is nice and hot. If you let it sit for even a few minutes while idleing, the cat won't be as effective. Have you replaced your O2 sensor ever?
Thread Starter
Joined: Mar 2002
Posts: 850
Likes: 0
From: Portland, OR, USA
Re: Failed Emissions on a 89 Civic DX (Hondaaccordvtec)
This is one of my customers cars. I highly doubt it. I replaced the cap and rotor and the THC dropped much. Its was only .07 of the limit. I am gonna retard the timing and have her send it in.
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Honda CRX / EF Civic (1988 - 1991)
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