Excessive fuel consumption what can I do at home to fix this problem

change fuel filter + clean egr valve

Hello, There are several causes for excessive fuel consumption . Dirty or clogged air filter, leaking gas hose or fuel lines, under inflated tires, wrong sized tires, excessive weight in the trunk, a heavy foot on the gas pedal are only a few.

Buy CRC MAF Sensor Cleaner -instructions are on the can

If your in some remote part of the world,braklean will work,
if you got nothing else that is recommended

When you say excessive--I doubt that cleaning the maf will
fix excessive,you may have other issues

You lost fuel control-- possibly

So check for leaking injectors
Fuel Trim Data -on professional scanner
O2 Sensor Data
Cylinder Misfires

There is You Tube Video on the maf

How to open

Don't sound like a fuel pump,replace fuel filter and see if it fixes.

HAVE VECHICLE SCANNED FOR FAULTY EVAP CANISTER PURGE VALVE IT NOT CONTROLLING EXCESS FUEL VAPORS..THAT WILL CAUSE LOT OF FUEL CONSUMPTION.

Sounds like the Oxygen sensor in the exhaust may not be working effectively. Check the connections and wiring running to it. The Oxygen sensor only starts to work when hot so be careful. The sensor outputs a pulse of voltage when the engine is running. If the voltage output is steady then it needs replacing.

o2 sensor bad or ,dirty or clogged injectors hope this helps

this could be an air intake problem, check the air filter but what ive seen before is the flexible intake pipe collopse only when the engine was under pressure as you describe.Try removing this pipe & driving again but not for long as dust would enter the engine .it might confirm or elimiate this.

Brakes could be binding or hand bake cable holding on but you think youd smell burning brakes if that was the case!What condition is the oxy sensor in ,maybe carboned up and contaminated which can tell the engine management to supply more fuel than required.is the air filter air box in good condition and air box lid securely fastened.Should be sealed from air box to throttle body If the air filter is clogged and dirty that can lead to excess fuel consumption.Have you installed any injector cleaner in the fuel tank.cleans up dirty injectors thst can cause excess fuel consumption.