Question about 2003 Chevrolet Cavalier

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Fix leaking gas tank 2000

Why my 2003 Cavalier has gasoline smell in the cabin and also an Oxygen Sensor code?

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  • 22 Answers

Fuel pump , line leaking near tank.

Posted on May 06, 2014

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Posted on Jan 02, 2017

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SOURCE: 1988 Ford F250, 4.9L engine. Runs sluggish

EGR is maybe stuck open. disconnect the vac hose at the EGR valve and see if the idle smoothes out. If the EGR is sitcking open, thats a vac leak. If that fixes it, replace the EGR solenoid valve.

Posted on Jan 28, 2010

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it might be you fuel regulator it will be leaking very little but enough to get that gas smell in the cab.  Becarful not to misjudge it for the 4 injector leaking cause gas will run down right on top of it.  It sits on top of your fuel rail and it has a vacum line and a fuel line going to it. It it is leaking it will more than likly be from the rolled metal round piece buy the vacum side.  Its an easy fix but it cost aroun $60.

Posted on Dec 22, 2009

  • 55 Answers

SOURCE: gasoline odor

You'll need to inspect every inch of the fuel system for leaks. I would start in the engine compartment. Chech injectors, fuel rail, lines to rail,etc. Check under car for leaks in lines, around tank. Use you nose to give you an idea where to start. Since it fills the passanger compartment I'm betting on the engine compartment in which the fumes could get in through the heater intake which is close.Look for wet spots. It could also be a leak in the evaporative emissions system which includes charcoal canister, purge system and lines but you'd probably have a check engine light with a problem in those systems. The hotter the vehicle and climate will make the leak harder to find due to evaporation.

Posted on Oct 18, 2008

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SOURCE: 2004 Chevy Cavalier 2.2 eco Automatic 94,000 miles

in my experience the usual culprit is the evap cannister. the problem is it gets moisture in it and freezes during winter thus cracking the plastic. if you lay under the car and look at the evap box it black plastic and if you see a loose or cracked hose or the box itself is cracked that is most likely it. as a side note you can check the gas cap and buy a new one to see if that rectifies the situation. lastly i don't think the gas tank should be suspect as you would probably notice if gas was leaking out of the tank. if you take the car to a dealer or shop they can do a smoke test and determine where the leak is.

Posted on Oct 19, 2010

  • 18 Answers

SOURCE: Help with gas fumes smell

Was fuel smell present before you had fuel pump replaced? If yes I would sugest you drop tank and see if fuel vent hose is plugged forcing fuel back pressure line to vent through cap. If fuel smell was not present before you replaced fuel pump and seal. I would suggest you drop tank back out and check all fittings and hose conections. also if you still have old sending unit you could check to make sure they are exactly the same. As Sometimes you have to pull relief valve from old sending unit and install it in the new one, as some sending units wont have one in it. and some will have one that is regulated at a different fuel pressure. hope this helps Vic

Posted on Mar 01, 2012

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What would cause a gasoline odor when I'm driving? No visible leaks and not overfilling the tank.

Could be anything. Bad gas cap, evaporation canister bad, bad hose, engine running rich etc. No way to give you an accurate diagnosis simply too many possibilities.

Jul 27, 2016 | 2002 Isuzu Rodeo

1 Answer

I have a 2001 Kia Sportage Limited with a trouble code p0171 plus I can smell gas if I have a 1/2 tank or fuller. Any idea what it could be?

P0171 HYUNDAI - System Too Lean Bank 1

Possible causes- Intake air leaks
- Faulty front heated oxygen sensor
- Ignition misfiring
- Faulty fuel injectors
- Exhaust gas leaks
- Incorrect fuel pressure
- Lack of fuel
- Faulty Mass Air Flow (MAF) sensor
- Incorrect Positive Crankcase Ventilation (PCV) hose connection

Sep 20, 2012 | 2001 Kia Sportage

1 Answer

Ford focus 2001 a smell of petrol sometimes weak sometimes strong i have had it checked by mechanic and no leaks could it be a oxygen sensor but no lights on the dash

Be sure you have inspected the gas tank for any small leaks...the smell and drip will vary by the tanks fill level...Hope this helps.

Aug 06, 2012 | 1996 BMW 318

1 Answer

My 99 cadi has a gas smell comming into the cabin

You might check for leaks starting from the tank to the injectors. If you do have a leak then your more likely to find it while its running. Injectors need pressure to run. With pressure, gas will come from the leak if u have one. If you dont have a leak then your car could be burning a little rich causing a gas smell. An o2 sensor could also be the problem.

Aug 30, 2011 | Cadillac Seville Cars & Trucks

1 Answer

My 05 sebring has the engine code p2098 the car has a 2.7 engine ,has had all 4 oxygen sensors replaced. the car will not stay running unless you keep your foot on the gas until it warms up. the engine cod...

The code p2098 is for a "lean" condition... Hold on a minute. An oxygen sensor cannot know if an engine is running lean it can only know there is oxygen remaining in the exhaust. The PERSON who wrote the code description assumes the engine does not have a mis-fire condition and that the exhaust system is intact.
Does the car run smooth? The fact that you have to keep the throttle open until it warms up makes me think not.
The car MUST run on all cylinders ALL THE TIME, and the exhaust system can have NO LEAKS upstream from the O2 sensor before the O2 sensor codes have any meaning.
These problems will cause the ECU to go full rich PRIOR to setting the code. Fouled spark plugs are a likely result. Also check the engine oil for the smell of gasoline. Full rich causes fuel to pass the piston rings and end up in the oil. If there is even the slightest hint of gas smell in the oil then change it.
If all of the above are true then act on the lean condition code by finding the culprit from this list:
  1. Vacuum leaks
  2. Low fuel pressure
  3. Bad injector
  4. Bad MAP and/or MAF
  5. Bad IAT

Mar 04, 2011 | Chrysler Sebring Cars & Trucks

1 Answer

Smell of gas in cabin, check engine light is on.

u need to find out what code the computer is logged. some parts stores like advanced auto i think still reeds codes for free. find out the code. its more then likely an oxygen sensor or somthing in the injection if your smelling gas. although it can be a spark problem causeing the gas smell. dont drive like that u can pass out from the smell. get it to b checked at a shop or check the code at a parts store that does it. hope this helps.

Nov 17, 2010 | 1998 Chevrolet Blazer

1 Answer

I have a fuel problem with my 91 240sx. It's burning gas like if it was leaking but there is no leak. It hasn't gone 200 miles and it's already on empty. This car use to go over 300 miles on a tank full....

You may want to check the oxygen sensor if it is still working. It tells the ECU if the engine is not burning the gasoline efficiently. You may also want to have the injectors checked if the O2 is ok.

Aug 01, 2009 | 1991 Nissan 240SX

1 Answer

1994 ford explorer exhaust smell in cabin

Sounds like an exhaust leak either at manifold or collector pipe. Exhaust is being sucked in through fresh air intake for hvac system. Must scan to determine what code is setting check engine light.

Mar 22, 2009 | 1994 Ford Explorer Limited

3 Answers

Excessive smell of gasoline, odor of fuel

Is the service engine light ON in this vehicle?

Dec 09, 2008 | 1994 Oldsmobile 88

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2000 Audi s4 has strong smell of gasoline

Pop the hood and check all the fueling lines, then check your gas tank and see if you just spilled some. Then check your exhaust pipes because you are probably running rich. You may need to change your spark plugs, or possibly a mass air flow sensor, or oxygen sensors. you should get either a vagcom to scan it or an OBD-II scanner.

Nov 16, 2008 | 2000 Audi S4

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