Chevrolet Chevelle Problems
Regarded as one of the most successful labels in the Chevrolet family, the Chevrolet Chevelle spawned three generations of high-performance vehicles from 1864 to 1977. Apart from the Super Sport variant, the Chevelle line produced several versions, which include the Laguna, El Camino, and Malibu. Although the Chevelle's performance on the streets and on the race tracks is backed by a long list of victories in NASCAR and other professional racing events, it is still important to note some of the most common flaws of this legendary Chevrolet vehicle.
Engine and cooling system
External and internal leaks are very common among Chevrolet Chevelle models. Internal leaks are characterized by the mixing of the engine oil with the coolant. External leaks, on the other hand, are signaled by the continuous spilling of engine coolant from the sides of the engine block. These leaks are due to the premature failure of the intake manifold or engine gasket, which eventually results to frequent overheating or total engine failure.
Most Chevrolet Chevelle models with the 454 cubic inches, 7.4-liter engines suffered from significant power loss and overheating due to a clogged air filter. Chevelle models are very prone to this particular problem because most of these vehicles are used in performance driving events where driving conditions are harsh. Constant exposure to extreme driving conditions is the number one cause of clogged intake tube.
Fuel and carburetor system
In 1976, a total of 811,180 Chevrolet and Buick vehicles, including numerous Chevelle models, were affected by a safety recall involving the vehicles' fuel inlet plugs. These inlet plugs, which were attached to the Rochester Quadrajet carburetor of the abovementioned vehicles, may fail and cause fire in the engine bay as well as loss of vehicle control.
Chevrolet issued a safety recall on several Chevelle and Monte Carlo models because their service brake systems were not in compliance with the brake performance standards of the Federal Motor Vehicle Safety Standard item number 105. The potential decrease in braking efficiency is caused by the incorrect brake combination valves that were installed on the recalled vehicles.
Almost 13,000 Chevrolet Chevelle models were recalled in 1970 because of the incorrect installation of the carburetor's throttle rod to the throttle lever retaining clip. If this problem is not corrected, there is a high probability that a Chevrolet Chevelle with poorly installed throttle rod will not slow down even if the driver already released the gas pedal.
Hi! So I have this Chevrolet Chevelle and it's been driving fine until recently. I know it's an old car and problems are to be expected but I just can't seem to pinpoint the issue with the transmission. It's been slipping in and out of gears—sometimes not going into any gears at all. Any help?
There are several reasons why your car's transmission is failing. Early signs of a problematic transmission include shifting into gear and having a hard time shifting to another. This means that there is a problem inside the transmission system that's interfering the shift timing. A transmission that is slipping in and out of gears means that it does not lock firmly into gear. What you should do is to first check the transmission fluid level. Sometimes, when the level is below the recommended amount, you will have a hard time shifting into gears or not be able to shift at all. The same thing will happen if the thickness of fluid in the transmission is not correct. So always make sure to use the recommended transmission fluid; you can check your owner's manual for this. Your car's computer system may also interrupt the shifting of the gears. Try resetting it by detaching the battery and letting it stand for about thirty minutes; then re-attach it and let the system reset itself.
Can somebody please help me with my Chevelle? It used to drive fine and the engine performance is actually great even for a used car. Recently, I can hear a loud clunking noise whenever I put the car into drive and also in reverse. What could be the problem?
This is another sign of a transmission problem. Loud noises are signs that something is up with your car's transmission system and you should have it checked immediately to avoid further problems. If you are driving a Chevelle with a stick or manual transmission, there is a high possibility that you will experience this after putting on higher mileage. You should check the fluid level and make sure that it is within the recommended level—not above or below it. A clogged fluid filter will also cause loud noises since the transmission fluid cannot flow properly. In some cases, the needle bearings in the catalytic converter become worn out. This can cause an excessive movement and misalignment—causing loud clanking noise when you put the car into drive and/or reverse.
My Chevrolet Chevelle is having a problem restarting due to heat soak—according to the mechanic. I don't quite understand it and why the car won't simple start after I turn it off. Any idea why?
Heat soak is an automotive term that simply refers to the raise in engine cooling system temperature and pressure after the engine has been turned off. Most common complaint about it is that the car won't restart immediately until the engine has completely cooled down. The problem is usually solved by replacing the starter. Sometimes, the engine can fail to fire the spark plug when it is hot. The solution is to replace the engine's points and condenser. You can confirm if this is the case by quickly removing the spark plug after it quits running and grounding the spark plug base securely to the engine.