Need help O2 sensors
#1
Need help O2 sensors
I just bought a 1998 honda civic dx coupe with a early model 1.6 L engine. It isnt passing smog and saying senor 2 is failing. i have looked under the car and only find one o2 sensor in front of the exhaust manifold, please help i have no idea were the other sensor is. i have looked at the cat convertor and no luck, i know this is a new swap engine with d16y8 engine. so is it safe to say there is only one o2 sensor?
attaching my diagram pics of the engine
attaching my diagram pics of the engine
#2
Re: Need help O2 sensors
Obd2 needs 2 sensors, one before and one after the cat, maybe they removed the second one while doing the swap but the plug on the car should still b there. The plug will b (standing at the front of car looking to the back) left side of the head under the distributor slightly to the front. Both sensors need to b a 4 wire sensor. It looks like the pic of the d16 shows a single wire sensor which will not work.
#3
Cool Cool Island Breezes. BOY-EE
iTrader: (1)
Join Date: Sep 2006
Location: TRILLINOIS....WAY downtown, jerky.
Posts: 11,953
Likes: 0
Received 4 Likes
on
4 Posts
Re: Need help O2 sensors
Your original D16Y7 engine has a manifold/cat combination. One O2 sensor pre cat to determine fuel curve. The other is post cat to monitor emissions.
If someone removed the manifold/cat combo and installed a regular exhaust manifold/downpipe combo, they probably opted out of installing a cat, and hence opted out of installing a secondary O2 sensor.
There's probably an empty 4 pin plug dangling with nothing plugged in near the exhaust manifold.
If someone removed the manifold/cat combo and installed a regular exhaust manifold/downpipe combo, they probably opted out of installing a cat, and hence opted out of installing a secondary O2 sensor.
There's probably an empty 4 pin plug dangling with nothing plugged in near the exhaust manifold.
Thread
Thread Starter
Forum
Replies
Last Post
'96typeR
Honda Civic / Del Sol (1992 - 2000)
15
05-17-2008 11:13 AM
mustang5.slow
Honda Civic / Del Sol (1992 - 2000)
7
07-18-2007 09:32 AM
djnikko
Forced Induction
4
03-03-2004 01:08 AM