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Failed smog at idle...(UPDATED...PASSED)
I went to get the car smogged and it passed at 2500 rpms but was running too rich at idle.
Since then I replaced: -spark plugs -air filter -coolant temp sensor I want it to pass next time so I'm wondering what else I should replace.
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2002 E46 BMW ///M3 (Daily) 1987 Porsche 944S (Project) 1985.5 Porsche 944 (Sold) Last edited by Mike_944; 11-07-2013 at 10:02 PM.. Reason: Update the title |
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11-02-2013, 03:06 PM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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O2 sensor, new cat, move to AZ ??
A few CA "failed emissions" posts may help. My car needs major CA smog help - Rennlist Discussion Forums New Cat Options to pass CA emissions? Failed CA smog... - Rennlist Discussion Forums Failed CA smog--high CO/HC - Rennlist Discussion Forums NO problem (emissions fail) ..just a few of many. You might see a pattern. Sorry, not much help. GL J_AZ
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1988 924S, 85,750K ..+ 1987 924S, 154K DD (+15K est. bad odo) |
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11-02-2013, 03:37 PM
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More than anything, the new air filter is likely to help.
You might dump in a can of octane raiser stuff next time. That supposedly makes it burn cleaner. Also make sure it's well warmed up (20-30 minutes of freeway driving immediately before testing). I always red-line it in 2nd and 3rd a couple times as well, to clean all the crap out. I don't know if it actually helps, but still it's a lot of fun...
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83 944 NA - Black on black 86 951 - Red - SOLD 7/21 16 Ford Expedition He who hesitates is lost. |
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11-02-2013, 03:38 PM
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Location: Orange County, CA
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Post up your numbers / results as they could mean different things.
Still have the stock cat?
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'87 944 Turbo |
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11-02-2013, 04:33 PM
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AFM #725
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CA sucks huh
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11-02-2013, 06:38 PM
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 I also replaced the AOS seals and some various hoses under the intake.
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2002 E46 BMW ///M3 (Daily) 1987 Porsche 944S (Project) 1985.5 Porsche 944 (Sold) |
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11-03-2013, 08:54 PM
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And yes I believe it's still the stock cat
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2002 E46 BMW ///M3 (Daily) 1987 Porsche 944S (Project) 1985.5 Porsche 944 (Sold) |
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11-03-2013, 08:56 PM
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What is the deal on this ethanol thing?
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2002 E46 BMW ///M3 (Daily) 1987 Porsche 944S (Project) 1985.5 Porsche 944 (Sold) |
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11-03-2013, 09:17 PM
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bumpppppp
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2002 E46 BMW ///M3 (Daily) 1987 Porsche 944S (Project) 1985.5 Porsche 944 (Sold) |
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11-04-2013, 03:22 PM
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Quote:
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83 944 NA - Black on black 86 951 - Red - SOLD 7/21 16 Ford Expedition He who hesitates is lost. Last edited by mikepellegrini; 11-04-2013 at 07:55 PM.. |
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11-04-2013, 07:52 PM
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Join Date: Aug 2012
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Looks like they failed you on the fuel cap integrity test?
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11-04-2013, 10:34 PM
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AFM #725
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Do you have an aftermarket cap? Get an OEM one.. you failed both tests pretty badly lol. Cat could be suspect
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11-05-2013, 02:05 PM
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Location: Orange County, CA
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I passed a month or so ago but failed the first time on HC. Here is what I did to pass (and barely pass...).
1st Test - HC Max-132 Meas-164 Swapped in stock chips (in place of Weltmeister DME KLR chips), replaced O2 Sensor, drove around for 20 minutes before test and let the car idle while waiting for test. 2nd Test - HC Max-132 Meas-132 Just passed... barely! Spoke to the smog tech at length who believes to get any better results on HC will most likely mean a new Cat for my car. So, my advice to you is to swap the O2 sensor and/or new Catalytic Converter.
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'87 944 Turbo |
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11-05-2013, 03:00 PM
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Yea the fuel cap was OEM but didn't pass. I bought another one from pelican.
The HC wasn't too far off so I'm hoping it will pass with all the stuff I changed and the help of some denatured alcohol. Anyone have any good links for cheap cats/02 sensors in case things don't go as planned?
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2002 E46 BMW ///M3 (Daily) 1987 Porsche 944S (Project) 1985.5 Porsche 944 (Sold) |
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11-05-2013, 07:45 PM
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AFM #725
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I got the universal heated Bosch O2 for like $40 off eBay...
A cat is going to be at least a few hundred dollars plus installation
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Watchdog Armory Racing AFM #725 Thanks to my 2017 Sponsors: JPH Suspension | AXO | Armour Bodies | BELL Helmets | Braven | EVLUTION Nutrition | Forcefield Armor | FunTrackDayz | Galfer | Motion Pro | MOTUL | Matrix Racing Concepts | ODI Grips | OGIO | Shorai Inc. | SPEEDMOB | Vortex | Woodcraft | Wicked Audio http://www.gawerracing.com |
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11-05-2013, 09:46 PM
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Join Date: Aug 2012
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A new cat can really hide a lot.
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11-05-2013, 11:32 PM
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I don't know what did it. All the parts I changed or the gallon of denatured alcohol I put in my gas tank but she passed!!!
 
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2002 E46 BMW ///M3 (Daily) 1987 Porsche 944S (Project) 1985.5 Porsche 944 (Sold) |
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11-07-2013, 10:01 PM
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Congrats, when I lived in CA it seemed I was always on the edge of my seat when it was time for smog testing.
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1981 924 Turbo 1987 N/A Auto Black w/Can-Can Red Interior |
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11-08-2013, 01:41 AM
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Location: Orange County, CA
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Wow... and passed very easily. Can you list the items you changed for documentation purposes? Also where did you get the alcohol? And did you add that to a full tank of gas or less?
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'87 944 Turbo |
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11-08-2013, 06:36 AM
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Quote:
As far as the denatured alcohol... -Run gas tank down to where the gas light comes on -Pour in a gallon of denatured alcohol (bought it from home depot $15) -Drive it hard for about 15 mins or so to mix the denatured alcohol with the other gas -If it idles weird, add a little more 87 octane gas till its back to normal -Time it so you can just drive straight into the shop and start the test
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2002 E46 BMW ///M3 (Daily) 1987 Porsche 944S (Project) 1985.5 Porsche 944 (Sold) |
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11-08-2013, 01:46 PM
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Lone Ranger
My 951
My 83 NA
1983 Porsche 944
John Paul Jones
