Why does my Chevy Silverado idle rough?

The most common reasons a Chevrolet Silverado 1500 has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.

What year Chevy trucks had TBI?

The short answer is that Chevy officially used throttle body injection from 1987 to 1995.

What should my Silverado idle at?

Typically, the idle speed will be set at a value in the range of 600 to 800 RPM, but the exact value will depend on the number of engine cylinders and whether the vehicle is equipped with a manual or automatic transmission.

What is a rough idle?

If your car is idling rough, though, it won’t feel smooth. The RPMs will jump up and down, for example, or they’ll fall below 600 RPM (or whatever is typical for your vehicle). Rough idle is easy to detect when you start your vehicle, and it may be dependent on the engine temperature when you start your car.

What is the difference between a Chevrolet c1500 and K1500?

The primary difference between a “C” and “K” truck is that C-models are two-wheel drive and K-models are four-wheel drive. In most other ways, the chassis are similar, with the same basic options, engines, transmissions and amenities over most of the range.

What year did Chevy switch from TBI to vortec?

in 1996 they started with the Vortec name on the engines. 1995 had TBI.

When did the 350 TBI come out?

For trucks the first year was 1987. If you want to get technical the 1982 and 1984 Corvette had a version of TBI called Cross-fire injection on a 350.

What RPM should I idle my semi truck?

900 RPM to 1200 RPM
Idle the engine at 900 RPM to 1200 RPM. This ensures the oil has sufficient pressure to reach the top of the heads in the engine.

What can causes a rough idle at low RPM?

The most common cause of rough idle is a vacuum leak or a failed PCV valve. It could also be caused by other air-fuel mixture-related issues like bad fuel injectors, EGR valves, or low compression. In rare cases, it is caused by misfires from a bad spark plug or coil.