Why did my 1994 Toyota Corolla fail the emissions test?

Why did my 1994 Toyota Corolla fail the emissions test?

1994 Toyota Corolla failed the emissions test, they brought it into our school to see can we fix it. The fix was some basic items but one was pretty surprising. High emission due to the rear O2 sensor on a pre OBD II vehicle Loading…

When does a Toyota Corolla start having problems?

Starting at around 100,000 miles, the Toyota Corolla engine can begin having problems cranking over. This is most frequently an issue with the starter, which can begin to go out on higher mileage vehicles. In the best-case scenarios, it’s just a problem with the starter solenoid, but more frequently, the entire starter needs to be replaced.

What kind of fuel economy does Toyota Corolla have?

The claimed official fuel-economy and CO2 emissions figures for the Toyota Corolla hatchback vary considerably, depending on whether you go for the 1.8 or 2.0-litre hybrid powertrain, and exactly what size of alloy wheel you specify.

Why does the Check Engine light come on on my Toyota Corolla?

There are plenty of issues that can cause the check engine light to illuminate, but a common problem on the Toyota Corolla is this light coming on in response to problems with the evaporative emission (EVAP) system. This can be an incredibly frustrating issue for drivers as EVAP problems are frequently difficult for technicians to diagnose.

What does high HC mean on a car emissions test?

A high HC reading means the test found high HC (hydrocarbons) in your emissions. In other words, too much gas is left in the exhaust after combustion. High HC can be caused by improper combustion, where:

What causes a car to have a high HC reading?

High HC can be caused by improper combustion, where: • Faulty fuel injectors are introducing too much fuel during intake, or clogged fuel injectors are injecting too little fuel into the combustion chamber. • A worn engine is causing too much oil to enter the combustion chamber and the excess oil enters the exhaust.

What to do if your car fails the HC test?

Check cracks in the air duct from the air filter box to the throttle body. If you can’t find any, spray carburetor cleaner around the intake manifold while watching the O2 sensor readings on your scan tool. In many cases you can see the vacuum leak as it sucks in the liquid spray.

What causes a high HC reading on an emissions test?

Let’s start by understanding what things cause a high HC reading. A high HC reading means the test found high HC (hydrocarbons) in your emissions. In other words, too much gas is left in the exhaust after combustion.

What to do if your car fails the NOx test?

If you own a non-EGR equipped vehicle, and have failed the emissions test for high NOx, pay close attention to the Catalytic Converter. Read about Catalytic Converter

What should I do if my Toyota Corolla won’t start?

If the engine will not crank over, the most common problem is the starter. These will tend to go out at about 100,00-125,000 miles. Sometimes it is only the starter solenoid, but often the complete starter (including solenoid) needs to be replaced. The average cost for a Toyota Corolla Starter Replacement is between $381 -$396.

How much does it cost to replace a Toyota Corolla starter?

Sometimes it is only the starter solenoid, but often the complete starter (including solenoid) needs to be replaced. The average cost for a Toyota Corolla Starter Replacement is between $381 -$396. Learn More Battery popwer turns everything on, but car wont crank, it wont do anything mech.

What kind of engine does a Toyota Corolla have?

The 4 cylinder, double overhead camshaft naturally aspirated engine has 4 valves per cylinder and a displacement of 1.6 litres. For this model it develops power and torque figures of 112 bhp (114 PS/84 kW) at 6000 rpm and 145 Nm (107 lbft/14.8 kgm) at 4800-5400 rpm respectively.

How much does a Toyota Corolla 1.6i weigh?

A 5 speed manual ‘box delivers the power to the driven wheels. The Toyota Corolla 1.6i weighs a claimed 975 kg at the kerb. Maximum speed claimed is 195 km/h, which is 121 mph, officially quoted fuel consumption is 5.7/7.4/8.6 l/100km 90 km/h / 120 km/h / city. 1996 Toyota Corolla 1.6i specifications