Failed CA Smog.....Need help please. Copy attached

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Feb 14, 2011 | 05:24 PM

#16

XJ_Libertad

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Joined: Jan 2011

Posts: 107

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From: So. Calif.

Year: 1990

Model: Cherokee

Engine: 4.0 IL6

Quote:

Originally Posted by ck1

I dont think you got it hot enough...you need to hop on the freeway (and not the 91 during traffic times

) dont know where you are here in marvelous so cal BUT you have to get it hot...drive it for 1/2 hour at 60+ or so beore you go in...I live in Murrieta and have a long hill here on the 15 and before I go in for smog on any of my junk I climb that hill and I have passed every time...GET THAT CAT HOT
hope this helps
Cameron
p.s. Calif smog is a rip off and is over rated...they are slowly and systematicaly trying to get all old cars off the road...I have a 47 Ford with a flat head and received a notice a couple of months ago saying my car was observed smoking heavliy and I need to remove it from the highway...funny it has a new motor in it and doesnt smoke at all AND I havent drivin it since my sons wedding in october..bunch of lyin thieves...brought to you by the same people who say that a Hybrid pollutes less in the carpool lane with one person then sitting in traffic runnin on batteries...go figure!...ok off rant

Cameron

I hear ya Cameron. I live in MoVal off the 60 and Perris. I jumped on the 60 freeway and drove like a mad man, pedal to the floor onto the 215 south and exited Alessandro where the station was. Next time i will need to drive like a mad man through the badlands to banning, turn around and then go to the inspection station.

I hate all this Government intrusion and living in Commifornia, it's the worst. Sorry to hear about that B.S. with your old bomb.

Feb 15, 2011 | 07:37 AM

#17

hercman

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Joined: Dec 2010

Posts: 141

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From: Fort Worth Texas

Year: 1985

Model: Cherokee

Engine: Chevy 350

A bad O2 will look to be ok but in reality it could be bad. If your gonna pull it you might as well change it.

Feb 15, 2011 | 08:44 AM

#18

je4reyk

Seasoned Member

Joined: Aug 2009

Posts: 300

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Year: 88 limited

Model: Cherokee

Engine: 4.0

Clean oil helps too

Feb 27, 2011 | 10:16 PM

#19

XJ_Libertad

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Joined: Jan 2011

Posts: 107

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From: So. Calif.

Year: 1990

Model: Cherokee

Engine: 4.0 IL6

Quote:

Originally Posted by dukie564

at least take it out and inspect the end. If it's really carboned up definitely replace it. If it's just white/black and the slots are not plugged up at all it's probably ok.

But seriously...it's a $30 part. I'd replace it anyways just to be certain.

I replaced the spark plugs, fuel filter, valve cover gasket, t-stat, tighten the manifold bolts and replaced the o2 sensor. I go in tomorrow for my second smog check. Keep your fingers crossed and wish me luck. I never thought I would look forward to standing in line at the DMV, but if I am tomorrow that means I passed.

Ok here is the old O2 sensor. How does it look to you guys??

Feb 27, 2011 | 11:13 PM

#20

The Rooster

CF Veteran

Joined: Feb 2011

Posts: 3,074

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From: Bergen County, New Jersey U.S.A.

Year: 1990 Laredo

Model: Cherokee

Engine: 4.0 Inline 6 Renix

change your pcv and change your oil.... clean oil and clean a clean pcv will = better emissions...

Feb 28, 2011 | 12:13 AM

#21

XJ_Libertad

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Joined: Jan 2011

Posts: 107

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From: So. Calif.

Year: 1990

Model: Cherokee

Engine: 4.0 IL6

Quote:

Originally Posted by The Rooster

change your pcv and change your oil.... clean oil and clean a clean pcv will = better emissions...

Forgot to mention that I also changed the pcv grommet (on the top of valve cover gasket and it was shot, probably the original). My oil was changed less than 500 miles ago and still looks light.

Feb 28, 2011 | 12:22 AM

#22

odgreen

CF Veteran

Joined: Nov 2010

Posts: 15,581

Likes: 8

From: some small town oregon

Year: 1989

Model: Cherokee

Engine: 4.0

that o2 sen doesn't look too new... but if it doesnt pass when you go tomorrow pm me i might have a "trick" for ya

Feb 28, 2011 | 01:33 AM

#23

JrRifleCoach

Member

Joined: Aug 2008

Posts: 231

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Year: 1992

Model: Cherokee

Engine: 6

Been sitting for a few years, 150K plus and just a bit over the top.

Fuel additives will not assist during the test. You may try adding a pint of alcohol to the fuel.

If your exhaust header is cracked it can cause a rich condition.

A fresh O2 sensor may also help, but a fresh Cat WILL get you under the limits.

Feb 28, 2011 | 08:01 AM

#24

dukie564

☠ CF Sheriff ☠

Joined: Nov 2009

Posts: 15,197

Likes: 18

From: Aberdeen, MD

Year: 1995

Model: Cherokee

Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts

Quote:

Originally Posted by XJ_Libertad

Ok here is the old O2 sensor. How does it look to you guys??

Doesn't look terrible, but doesn't look good either. I'd replace it.

Feb 28, 2011 | 09:07 AM

#25

XJ_Libertad

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Joined: Jan 2011

Posts: 107

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From: So. Calif.

Year: 1990

Model: Cherokee

Engine: 4.0 IL6

Yeah the o2 sensor wasn't new, It was the idle stepper motor that the PO had changed. I did replace the O2 with a new NTK/NGK

Will do odgreen89

Feb 28, 2011 | 03:16 PM

#26

XJ_Libertad

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Member

Joined: Jan 2011

Posts: 107

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From: So. Calif.

Year: 1990

Model: Cherokee

Engine: 4.0 IL6

Just an update for all of you that helped with advice. I passed my smog test today and the tech told me that it was running as clean as it could be for the miles it has (183,000).

Thanks again to all that helped!