Question about 1994 BMW 3 Series

1 Answer

The ?check engine? light came on, what does this mean? Is it serious? i am having a problem passing my California smog test (the car failed the hc portion of the test), is this engine light related? a friend said it could possibly be the cat converter?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 316 Answers

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

1 Suggested Answer

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

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

I have a 1994 chevy silverado c1500 v/6 4.3 litre and failed smog for high hc levels st idle . what should i do before i take it back to try and smog? ive already done complete tune up.


as long as you have no check engine light on change oil, air filter. pep boys sells a product called guaranteed to pass add to fuel make sure car is hot when you go back for emission test cold car has high hc levels it also helps to post the hc level you tested at and the limit on your receipt hope this helps

Apr 08, 2016 | Cars & Trucks

1 Answer

1983 Ford Ecoline 150 /6cyl. Failed smog/ Egr numbers were too high How can i fix this to pass smog


Other than testing the EGR valve, not many options. You really need a 4 gas analyzer to know what is coming out of the tailpipe. Otherwise you won't know if repairs have helped the problem.
When you say EGR numbers I'm not sure what you mean. Most of the time the test is for CO and HC gases, along with oxygen and Nox also in some areas. The EGR valve allows some exhaust gas to be recycled thru the engine and reburned. CO or HC could be high if the EGR system is not working.

Feb 06, 2015 | Ford Cars & Trucks

1 Answer

1989 cheverolet s 10 pick up 4.3 litre v-6, failed smog hc too high


About the only thing you can do is take it to a qualified DEQ specialist and have them take a look at it. It might be something as simple as a hose, or not.

Nov 28, 2013 | Chevrolet S 10 Cars & Trucks

1 Answer

How do i replace a check engine light bulb in 1999 kia sportage


The instrument cluster would need to be removed, and yes the bulb test when you turn the key on is part of the smog check.

Jul 01, 2013 | 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

Failed smog check


How well does the vehicle run?

Assuming that the engine did pass the EGR function test on the emission test results, and the MIL (Malfunction Indicator Light) or check engine light is not on when the engine is running, and if you are not sure when the last time it was that the engine had a complete tune-up, with distributor cap, ignition rotor, spark plugs, spark plug wires, air and fuel filters, then a complete tune-up would certainly help, and if the engine oil and oil filter have not been changed in a while, then they should also be changed before an emission test because long used engine oil traps carbon and it will show up as higher CO on the emission test because the emission analyzer will be able detect the higher CO from the engine oil through the PCV valve.

However, it would seem from those HC readings that there is a vacuum leak, and carefully inspect all of the vacuum lines for any cracks or damage, (especially the vacuum line to the fuel pressure regulator) because cracks in the vacuum lines seem to like to hide underneath the lines.

The emission label under the hood should have the vacuum line routing diagram printed on it, and the vacuum lines should all be checked to be certain that they are all connected correctly.

Here is the firing order diagram for that vehicle to help assist you tune-up the vehicle.


e696e87.jpg

Jul 09, 2010 | 1997 Honda Civic

2 Answers

Failed CA smog test "MIL/Check Engine Light", computer data wiped


No this is not right. If you remove the battery everything resets anyways. If they are talking about relearn procedure, it should only require 50 miles. But if the light is on than either they did something wrong, created another problem, or there was already another one existing. Have the code read and let me know what it is. I'm in Ca too and used to prep european cars for smog, so I do know what I'm looking for. How did the rest do? What were the readings(if possible)?

May 20, 2010 | 2003 Chevrolet Suburban 1500

1 Answer

My car failed smog test c emissions to hi


ALOT OF OLDER CARS DO FAIL THAT SMOG TEST. BUT YOU CAN PURCHASE A SMALL BOTTLE OF RXP AT AUTO ZONE OR YOU LOCAL AUTOPARTS STORE AND IT WILL PASS.. THATS IF YOUR CHECK ENGINE LIGHT IS NOT ON.

Mar 05, 2010 | 1989 Mazda 323

1 Answer

Problem is a check engine light on with codes p0442 and p0446 and failed california smog test


those codes mean you have a problem with your evap there is a small leak in your evaporative system(fuel vapours)have the system checked

Jan 22, 2010 | 2003 Toyota Sienna

1 Answer

Failed smog


We had to have the calatic converter replaced. We did this after doing an oil change, air filter change, and new spark plugs and still hadn't passed smog. After changing the calatic converter it passed smog with scores of 25.

Mar 17, 2009 | 1992 Mazda Protege

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

317 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...