Common questions

What happens if the MAF sensor on a corvette goes bad?

What happens if the MAF sensor on a corvette goes bad?

The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. A bad mass airflow sensor can leave your Chevy Corvette’s engine running rough, or even inoperable. A MAF sensor measures the density of the air entering the intake manifold.

Where are the sensor locations on a corvette?

185 Ohms @ 210 F, 3400 Ohms @ 70 F, 15,000 Ohms @ 40 F. Underside of manifold air plenum at rear. 4400 Ohms @ 60 F, 2200 Ohms @ 85 F. Right side of engine, top right corner of radiator

Where is the air temperature sensor located on a car?

The Manifold Air Temperature (MAT) sensor is responsible for sending air temperature information to the ECM. It’s located directly underneath the intake plenum. Due to this location the sensor picks up engine heat and the air temp readings are incorrect, or at the least “not optimal.”

How do you change the air temperature sensor on a C4?

This means that the ignition won’t be retarded quite so often. All you need to do is drill a 7/8” hole in the area around the air filter. Then install the rubber grommet in the housing. Next attach the new wiring harness and push the sensor through the rubber grommet. It’s that simple. You’ll get slightly more power and better throttle response.

The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. A bad mass airflow sensor can leave your Chevy Corvette’s engine running rough, or even inoperable. A MAF sensor measures the density of the air entering the intake manifold.

The Manifold Air Temperature (MAT) sensor is responsible for sending air temperature information to the ECM. It’s located directly underneath the intake plenum. Due to this location the sensor picks up engine heat and the air temp readings are incorrect, or at the least “not optimal.”

This means that the ignition won’t be retarded quite so often. All you need to do is drill a 7/8” hole in the area around the air filter. Then install the rubber grommet in the housing. Next attach the new wiring harness and push the sensor through the rubber grommet. It’s that simple. You’ll get slightly more power and better throttle response.

When to move Mat sensor to cold air duct?

Due to this location the sensor picks up engine heat and the air temp readings are incorrect, or at the least “not optimal.” A sensor relocation kit (available for 1985-1991 (PN 304292) and 1992-2000 (PN 304710)) moves the MAT sensor to a cold air duct where the air temp is correct (cooler) and drivability is improved.

What causes a Chevy Corvette to run rich?

Idle Issues – Your Corvette may run rich or lean when idling, or it may also idle erratically. A rich condition is when there is not enough air relative to the fuel in the air/fuel mixture. The exhaust color is usually darker when running rich.

Why did the C4 Corvette go back to MAF?

With the 1994 model C4, they went back to the MAF system. Note that MAF based systems are far more accurate since they measure air flow directly whereas the MAP system calculates air flow indirectly. Errors and vacuum leaks can throw the calculation off and Corvette returned to the MAF system beginning with the 1994 C4 (with a MAP backup).

What should the idle speed be on a corvette?

Initial engine idle speed of should be around 900-1100 RPM and then slowly decay to around 600-700 RPM unless the air conditioner is on at which case it will run at around 800-1000 RPM depending on pressure altitude. If this does not happen, the Idle Air Mixture Valve or IAC may be plugged or faulty.

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Ruth Doyle