Troubleshooting a Chevy 4.3 Engine


Common Problems

  • A common complaint with the Chevy 4.3 engine is that it doesn't idle well, it's loud and makes awkward noises. Examples of this are staling, lurching and poor acceleration. Poor idling and loud engines usually go hand-in-hand. Chevy 4.3 engine are known for making bad throttle control switches (TCS) and Idle air control valves (IAC), which would cause all these problems.

Idle Air Control Valve and Throttle Conrtol Switch

  • Open up the hood and look at all the wires, spark plugs, tubes, vacuum lines and valves. Look for corrosion, breaks, exposed wires and loose connections. Considering the Chevy 4.3's reputation, the broken wires and valves you find are probably related to the IAC and TCS. However, It's best to double-check your car's manual to pinpoint exactly what you are looking at.

Check Your Oil

  • Before you jump to the conclusion that your Chevy has a problem with the IAC and TCS, check the oil! As obvious as it may sound, many people may only get their oil checked once or twice a year. If you have an older car, you may need to check your oil every other week. Lack of oil will cause a knocking sound in the engine, stalling, poor acceleration and eventually engine break down.

Vehicle Fuilds

  • Lack of transmission fluid, battery fluids, radiator and cooling system fluids can all cause symptoms that mimic bad idle air control valves and throttle control switches. Checking your vehicle's fluid levels is always a good idea to maintain the overall longevity of the engine. Once you have ruled out all the basics, you can go back to what the Chevy 4.3 engine is known for: bad idle air control valves and throttle control switches.

Related Searches

  • Photo Credit
Promoted By Zergnet


You May Also Like

  • Chevrolet S10 Problems

    The Chevrolet S10 truck series was manufactured between 1982 and 2003, and included the S-15, GMC Jimmy and Blazer variants. Several engine...

  • Chevy 4.3 Information

    The Chevy 4.3-liter V-6 engine is a durable, compact motor used to power Chevrolet trucks, vans and some passenger cars. Although it...

  • Chevy Engine Troubleshooting

    Your Chevy engine is not much different from many other makes and models you see on the road. An internal combustion engine...

  • Chevy 4.3L V6 Specs

    The 4.3-liter Vortec Chevy V6 was the first Vortec engine ever made in 1986 and was used in GMC and Chevy trucks....

  • Problems With the 2001 Silverado Vortec 8100 V8 Engine

    The 2001 Chevrolet Silverado Vortec 8100 V8 is a big-block engine designed for the full-size pickup truck. The Vortec has more power...

  • Performance Tips for Chevy 4.3 Engine

    The Chevrolet 4.3L V6 is colloquially known as the "3/4 350" for good reason. This engine (which came stock in many top-line...

Related Searches

Check It Out

How To Travel For Free With Reward Points

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!