Question about 1994 BMW 3 Series

Open Question

My 1995 740Il just failed the smog check hc maximum 55 and mine measured 122. The Co maximum is 31and mine measured 71.

Posted by Anonymous on

Ad

4 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
  • 316 Answers

SOURCE: The ?check engine? light came on, what does this

You will never pass a smog test if a check engine light is on. The light being on says you failed before they did anything to your vehicle. Take the vehicle to your local autozone. Autozone will scan the vehicles computer and get the codes that are causing the issue, and they will do it for free. After you make the repairs, you will need to get the computer reset. Autozone will also reset it for you for free.

Posted on Jun 26, 2009

Ad
johnjnail
  • 1702 Answers

SOURCE: My 1990 chevy astro van

the smog test looks like the engine is miss firing, that could cause the timing to be out of whack also, try a old fashioned tune up, new spark plugs, wires, and filters also replace the PCV valve. any time you see the NO that high suspect a miss fire.

Posted on Feb 24, 2011

  • 192 Answers

SOURCE: has codes 14 52 and 55 will not pass smog car

14 = MAP sensor voltage below .16V or over 4.96V
52 = Oxygen sensor stuck at rich position
55 = End of codes (not a fault code in itself)

Would appear that you have either a bad MAP sensor, or a leaking vacuum line somewhere.

The bad readings from the MAP sensor will cause the trouble code with the oxygen sensor (and the reason why you failed the test,) but this is not to say that the oxygen sensor can't be bad also.

Start with the cheapest thing, tracing vacuum hoses and lines for cracks and/or leaks. There should be a diagram somewhere under the hood that shows you the routing of the lines, attached to the underside of the hood or possibly on the front area near the radiator. With the age of the vehicle, I wouldn't doubt that this is the problem.

If everything checks fine with the lines, then try replacing the MAP sensor. These do have a tendency to fail.

Good luck, line tracing is bot a fun job, I've been there many times.

List of Codes

Posted on Apr 08, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Why does my car **** and hesitate and has failed smog 2X is now a gross polluter ?


Because you failed to have a shop look at the data
& make the required repairs & get caught up on preventative
maintenance BEFORE you went to inspection

If you were in fact at a shop, for any reason,then they have no idea
how to test vehicle

Have you considered the motor is shot & you have leaking valves?

May 20, 2014 | 2000 Toyota ECHO

1 Answer

I rebuilt the TBI, Changed every sensor in the truck and replaced the heads. I still cannot pass the CA smog test


Check everything that is connected to a vacuum line, check the CAT and the injectors and last run a compression test.

Mar 13, 2014 | 1988 Chevrolet K2500

1 Answer

I failed Emissions Test: 15mph: HC - (max 66) 150


go to autozone and have them look and the check engine light and that will help you figure it out. they should also give you a piece of paper that will tell you what is wrong take that to an auto mechanic and ask his opinion

Oct 28, 2013 | 1997 Honda Civic

1 Answer

My 1993 honda civic lx failed smog check the HC and CO were hig HC=MAX was 79 and MEAS 98 and 25 mph MAX was 44 it meas 65 and lastly the CO MAx was 0.41 and MEAS 0.51


Its running rich and the most likely cause is the lamba sensors ,check them out with a multimeter to check the heater circuits are functioning and the reading coming out is correct

Mar 04, 2013 | Cars & Trucks

1 Answer

I'm barely failing smog due to high hydrocarbons.


Hi Larry, I your position I believe I would take the vehicle for a diagnostic scan and then check the read outs. There could be a problem with any one of a number of sensors but I believe you'll end up with all odds pointing at the cat. Regards John

Aug 25, 2012 | Cars & Trucks

1 Answer

My 1990 chevy astro van didn't pass smog. Paperwork says it failed the following; Ignition timing: 99 ATDC. Also, ASM Emission Test Results; 15mph HC (PPM) max is 122 measured 127, 25mph max is 102...


the smog test looks like the engine is miss firing, that could cause the timing to be out of whack also, try a old fashioned tune up, new spark plugs, wires, and filters also replace the PCV valve. any time you see the NO that high suspect a miss fire.

Feb 24, 2011 | Chevrolet Astro Cars & Trucks

2 Answers

Need 92 toyota paseo to pass CA smog test ! What causes too high HC in smog test????


High HC means moisture in the system. Try driving it longer then take it to the smog shop. Otherwise it could be hard like a head gasket or easy such as a PCV not functioning. Any ways you should always drive it about 20 miles before smog check, longer when the weather is cold.

Nov 30, 2010 | Toyota Paseo Cars & Trucks

1 Answer

1991 Honda Accord LX failed emission test on smog test. High CO and HC on 25mph


not enough info. Typically, CO and HC together can be the result of poor fuel control or misfire, or worn components such as O2 sensor or catalytic converter, but without more data, repair recommendations are likely to waste money and not achieve success.

Mar 07, 2009 | 1991 Honda Accord

2 Answers

1988 Ranger failed CA smog test (badly)


pull head off and grind the valves in,this should help reduce the levels ,also check the pistons and bores if ok or look it then rebuild and try it again

Jan 07, 2009 | 1988 Ford Ranger

1 Answer

Failed Smog Test Close to CA-HC Limits


You can try some over the counter solutions per say. Some of the mechanics in a bottle. They sell some products This will probably be the cheapest router. If this doesn't work then you need repairs.

Pass your emissions test.

Jan 03, 2009 | 1992 Honda Accord

Not finding what you are looking for?
1994 BMW 3 Series Logo

Related Topics:

126 people viewed this question

Ask a Question

Usually answered in minutes!

Top BMW Experts

Frankie B

Level 2 Expert

65 Answers

Fred Sops

Level 2 Expert

272 Answers

Doberman

Level 2 Expert

254 Answers

Are you a BMW Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...