We’re sorry you’re going through this problem. There are two types of manifolds in an engine; repairing an intake manifold can cost anywhere from $200 to $2,000, but average costs are closer to the $800 to $1,000 range. Replacing an exhaust manifold has roughly the same price, ranging from around $200 to $1,500 and averaging close to $800 to $1,100.
An intake manifold pumps air into the engine’s cylinders, mixing it with fuel before igniting. An exhaust manifold collects your engine’s exhaust gasses from each cylinder and then sends them through the exhaust system where they’re eventually expelled from the car’s tailpipe.
What you’re describing sounds like a potential intake manifold leak. Symptoms include:
Exhaust manifold issues involve:
You should consider shopping around and calling reputable mechanics in your area to gather more quotes. And be sure to read reviews online, too.