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2
votes
1answer
13 views

How can I estimate CO2 emissions for a vehicle travel distance

How can I properly estimate CO2 emissions for a given travel distance (of a private vehicle)? I found the following formula, but I'm not sure that it's correct: kgCO2 = Average fuel consumption per ...
4
votes
1answer
33 views

Evaporator canister purge system advice needed

1995 Blazer - 4.3 L Vortec V6 CMFI (vin W w/ PCM) 230,000 miles There are no trouble codes. This is a OBD-I or 1.5 system from a GM transitional year (I have the OBD-II style connector). I have ...
2
votes
1answer
26 views

Are CO2 emissions proportional to MPG figures?

I was looking at the car tax (VED) system in the UK, as I'm considering buying a new car. I was just wondering, are CO2 emissions always proportional to the MPG figure of a car, both in theory - ...
1
vote
0answers
25 views

1993 Ford Taurus LX 3.0 Catalytic Converter

I've failed my smog test 3 times in a row within a week. They told me it was the EGR. So I changed my EGR Valve, EGR Solenoid, and my EGR Pressure sensor. The vacuum lines running from the EGR Valve ...
1
vote
1answer
70 views

Check Engine Light for bad gas cap [duplicate]

I am just wondering... a friend told me that a faulty gas cap can cause air in the tank.. is that true? also, can that cause the check engine light to come on?
1
vote
0answers
25 views

Vehicle Technology Controls [closed]

Could anyone tell me what "cars Petrol <1,4L Euro-1" means? I really appreciate if anyone can tell me reliable sites to get information about the all the types of vehicle technology controls i.e ...
4
votes
1answer
156 views

How to determine if P0430 is O2 or catalytic converter

2009 CTS4 3.6L P0430 catalyst below efficiency bank 2 comes on periodically. (There are no other codes being thrown.) I put a data logger on it today on my drive to work and the rear sensor is ...
3
votes
3answers
118 views

Failed inspection on because of OBD2 readiness

My 2008 Hyundai failed inspection because the OBD-II system is in a "not ready" state. The mechanic asked if my battery had died recently. It had, after getting an alignment. He suggested driving on ...
5
votes
1answer
101 views

2003 Toyota Rav4 ECT Too Low for Readiness Monitor Drive Pattern

I recently failed an emissions test because my CAT and EVAP readiness monitors were "Not Ready" following a reset check engine light a few weeks back, which told me that the engine coolant wasn't ...
1
vote
1answer
265 views

Replaced 02 sensors, engine light still on

I recently bought a second hand VW Golf. It was 'serviced' and MOTed before the guy sold it to me. He said three 02 sensors were replaced during the servicing. The day I drove it away, the engine ...
2
votes
1answer
84 views

Replacement Interval for Carbon or Charcoal Canister

How often should the Carbon or Charcoal Canister for most vehicles be replaced?
3
votes
1answer
151 views

Is a secondary air injection pump motor necessary?

My check engine light came on and the mechanic said the problem is that the secondary air injection pump motor broke. It's a used car (2004 VW new beetle) with about 150,000 miles on it and the parts ...
4
votes
1answer
66 views

Exhaust on a replaced motor

I recently had to change the motor in my 2004 Hyundai Sonata. I bought a used one from the junkyard, and it fired right up after I got it put in, and all the wires, hoses, etc. connected. The only ...
0
votes
1answer
436 views

Persisting 1998 Malibu Exhaust Problem

I am having a problem with a 1998 Malibu. I keep getting several codes but primarily P0420. I have replace the Catalytic Converter twice. Both oxygen sensors have been replaced. I have checked the ...
1
vote
1answer
405 views

How to install a California oxygen sensor into a federal catalytic converter assembly?

I have a 2000 Mitsubishi Galant ES 2.4L Engine with California emissions. Installed is a new federal catalytic converter assembly. The problem is that I do not know what kind of oxygen sensor to ...
2
votes
2answers
4k views

Failed emissions - high lambda, low HC and CO

My 2007 Daihatsu has failed the national car test on emissions. The readings at 3500rpm are: Lambda: 1.10 (normal range 0.97 - 1.03) CO: 0.02% volume (normal range below 0.20%) HC: 11ppm (normal ...
5
votes
1answer
214 views

Ibiza Mk2 MOT emissions test failure

I've had my SEAT Ibiza Mk2 for about three years and it's just failed its MOT on the emissions test - there's fuel in the exhaust on idle, and only on idle. It's in the garage at the moment and ...
7
votes
2answers
5k views

Should I replace my own oxygen sensor if i have a Check Engine Light and Code P2195?

My 2003 focus lx 2.0L L4 SOHC ~18,000 miles has had the engine light so i went to autozone to read the code. Autozone obd2 printout says "P2195 lack of heated oxygen sensor- Bank 1 Sensor 1 HO2S11 ...
2
votes
3answers
2k views

Will a universal catalytic converter set off the check engine light on an Infiniti G35?

I have a 2004 Infiniti G35 and the bank 2 catalytic converter has triggered the check engine light. If I replace it with a universal Magnaflow catalytic converter (approximately $100) will the check ...
0
votes
1answer
247 views

How to know if a '97 Ford Escort Engine is Federal Emissions or California Emissions

I did a search on the VIN and the engine type is listed as: 2.0L I4 SPI Can anyone tell if it is California or Federal Emissions? From what I've been told they have completely different intake ...
5
votes
1answer
187 views

How to know whether a Lexus rx450h qualifies for California Emissions standards?

I'm looking at a 2012 Lexus rx450h but will be moving to one of the states (Arizona, Connecticut, Maine, Maryland, Massachusetts, New Jersey, New Mexico, New York, Oregon, Pennsylvania, Rhode Island, ...
3
votes
2answers
1k views

Engine Revving/Misfiring - Formerly Running Lean - No Trouble Codes Now

For a few months now my 1999 Toyota Avalon XLS (California model - this apparently affects the emissions specs - I'm in NY however) with around 105k miles has been giving me these totally random ...
4
votes
2answers
7k views

What effect will removing my EGR have?

My 2003 Jetta TDI check engine light recently came on, and a scan by Advance Auto revealed code P0401 -- EGR insufficient flow. I took the vehicle to the local TDI guru, who gave me the option of ...
2
votes
2answers
297 views

Access to EVAP Canister Vent Valve

My TSX is coding P2422 - EVAP Canister Shut Valve close malfunction. I'm finding posts online that it is often a blockage (spider nest??) that can be blown out with air. I'd like to try that first ...
5
votes
1answer
2k views

Passing Emissions Test: Can't figure out how to fix code P0705 on a 1997 Nissan D21 / Hardbody / Pickup

So hello. I have had a lot of luck with my other vehicles on forums and a recently became the (hopefully-soon-to-be)-proud owner of a 1997 Nissan D21/Hardbody/Pickup XE. It has 156k miles on it and is ...
0
votes
1answer
1k views

Volkswagen Golf Mk4 - Failed emission test (UK)

I don't know if the emissions tests are different in other countries so I specified UK. A garage just failed my girlfriends 1.4 Golf MK4 and said it was smoking bad, they tried sparks, cat, lambda, ...
4
votes
5answers
4k views

2011 Chevrolet Cruze - Clicking Noise When Braking

So I leased a 2011 Chevrolet Cruze, brand new (only 2 miles on it), last November, 2010. It was running perfectly fine for a while. Brought it in for the standard tire rotation/oil change a few months ...
3
votes
1answer
660 views

Which O2 sensor is bad?

I'm getting codes p0031 and p1148 on my 2007 Altima 3.5 SE. From what I've read, p1148 is caused by p0031. P0031 relates to the voltage on the heater circuit of the 02 sensor on Bank 1, Sensor 1. I ...
3
votes
2answers
2k views

2000 Nissan Maxima Service engine light

The dealer diagnosed it and says it got tripped by catalytic converter and rear oxygen sensor. The total estimate was around $2000. The blue book value on his car is around that amount. Is there a way ...
1
vote
3answers
9k views

Best Ways to Pass Emissions?

I recently bought a 1989 Mercedes 300E that didn't run. Has a straight-six gas engine. Thanks to the miracle of Seafoam and a lot of luck, I was able to get fuel delivery happening again. I then ...