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emissions

The check engine light comes on and stays on if the onboard computer sees a problem that could cause an increase in emissions or a problem with its systems. After looking at most of the possible codes or issues that...

The malfunction indicator Warning Light is located on the instrument panel. When this light illuminates and blinks, then the vehicle has detected that the engine is misfiring. When the light illuminates and is steady, then there is an issue with...

The malfunction indicator Warning Light is located on your instrument panel. When this light illuminates, your vehicle has detected an issue with the emissions system, and you should have your car serviced as soon as possible. Tip The malfunction indicator...

Hello. The catalytic converter acts as a filter (https://www.yourmechanic.com/article/what-does-a-catalytic-converter-do) for exhaust gasses emitted from the vehicle. This purpose of this is to reduce the pollutants that are expelled into the environment. The first thing you could try is adding a...

Hello. In order to know why the light is on (https://www.yourmechanic.com/article/the-check-engine-light-demystified), I would need to know the codes from the computer. It can be anything for a computer issue to a bad gas cap. I usually scan the computer first...

Can you pass emissions with a newly turbocharged car that has ODB-2 that does not come with a turbocharger from the factory? It is illegal to modify any factory installed emissions system on a motor vehicle. Adding a turbocharger...

Wow, I almost bought one of these new back in 1986. It is possible that due to age, any number of sensors can be bad, even without a Check Engine Light being set. The best way to determine that is...

The mechanic that checked your vehicle is giving you a possible fix by cleaning the throttle body (https://www.yourmechanic.com/services/clean-throttle-body) of built up carbon. This may help with the idle and P0505 code (https://www.yourmechanic.com/article/p0505-obd-ii-trouble-code-idle-control-system-malfunction-by-jay-safford), and for passing the emissions test (https://www.yourmechanic.com/article/how-to-pass-an-emissions-test-by-mark-vallet). The...

Hi there. The P0455 code (https://www.yourmechanic.com/article/p0455-obd-ii-trouble-code-system-gross-leak-evaporative-emission-by-john-nelson) that you are getting in the computer is a different issue than the transmission. Most of the time it is caused by a bad gas cap or a leak in the system. If the...

Hello, it sounds like you have quite a few things going on. I am going to do my best to break them down for you. First if the engine is very loud when idling and the belt has already been...

The malfunction indicator Warning Light is on your instrument cluster. It illuminates when the On-Board Diagnostics-Second Generation (OBD II) system detects an issue. The OBD II system monitors your vehicle’s emissions. When the malfunction indicator Warning Light is illuminated, it...

The malfunction indicator Warning Light is connected to the On-Board Diagnostics-Second Generation (OBD II) system, which gauges the vehicle’s emissions. When the malfunction indicator Warning Light illuminates, then the OBD II system has detected an issue with the emissions system,...

Hi. The transmission temperature message pops up on your control panel when the powertrain control module (PCM) has detected excessive transmission fluid temperature. This is a warning to the driver as extreme temperatures can damage the transmission. Transmission temperatures can...

Restriction in the EVAP vent or purge hoses can also cause this code. A restricted EVAP canister will also set P0446 (https://www.yourmechanic.com/article/p0446-obd-ii-trouble-code-evaporative-emission-control-system-vent-control-circuit-malfunction-by-spencer-clayton). A smoke test can find restricted canister. I suggest having a mechanic come out and diagnose your Check...

Hi, to fix this problem you will need to replace the intake manifold gaskets. That will take care of the Barometric Pressure Sensor. I would inspect the exhaust gas recirculation (EGR) valve, since it may have been left open causing...

Hi there - the most straightforward and least expensive approach to this problem is to simply take your vehicle in for testing 15-30 days prior to your "deadline" (birthday month?). Most states or metro areas allow a 30 day "repair...

Does the fluid smell like gasoline? If it has no smell it is probably just condensation coming from the exhaust. If is is just water from the exhaust there is nothing to worry about. The light is probably on for...

Hello. Since the vehicle sat for that long, you may have to drive it for about 500 miles before it resets. The key is varying your driving. You need to drive it at highway speeds, around town, stop-and-go driving, and...

The vehicle stability control (VSC) light and code P0420 (https://www.yourmechanic.com/article/p0420-obd-ii-trouble-code-catalyst-system-efficiency-below-threshold-bank-1-by-jamahl-walker) are for two different problems. The VSC system would need to be tested for codes for that system. The code P0420 is for the O2 sensor or problem with a...

Often it's a GDI because they carbon up the engines over time. Pay a mechanic to carbon clean the entire engine. Then you'd want to pray that the cat hasn't been ruined. It may already be ruined. It's a '98...