Question about 1999 Chevrolet Lumina

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I have a 99 chevy lumina 3.1 engine it starts up great but it smell of fumes from exhaust pipes after a while it cuts off

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The problem you describe is almost certainly a bad/stopped-up catalytic converter. Not fuel line, not trunk seals, not head gasket or anything else. The fuel line answer is just wrong. If your catalytic converter is bad or stopped up, you will also almost certainly need to replace the Oxygen sensor as well.

You didn't say it smells like rotten eggs or sulfur, but that is the most commonly-stated description...it isn't accurate; a bad converter smells like a bad converter. Most people find the odor similar to rotten eggs or sulfur. A clogged exhaust system will shut an engine off after a short time due to backpressure and excessive temperature buildup.

Your check engine light should also be on. Read any diagnostic codes the PCM has set. I'm fairly sure your problem is the catalytic converter...

Steve Johnson,
Wrenching GM Cars/Trucks For 40 Years

Posted on Apr 02, 2015

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Posted on Jan 02, 2017

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Bloomingidoi
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SOURCE: engine misfiring/fuel coming out exhaust

Sounds like you may need to inspect and replace your fuel line from front to rear. no other reason for your problem.

Posted on Nov 29, 2008

  • 104 Answers

SOURCE: 99 chevy lumina 94k mi transmission stopped working. Fluid good.

check fluid level, make sure proper fluid is in transmission otherwise take to trans shop to diagnse if level and type is correct(check at idle normal operating temp)

Posted on Oct 21, 2009

  • 416 Answers

SOURCE: engine light on and white exhaust coming out

white smoke out off exhaust is coolant getting into cyl like a bad head gasket to much fuel would be black smoke

Posted on Feb 19, 2010

  • 1 Answer

SOURCE: troubleshooting check engine light 1992 chevy G20

replace your oxygen sensor

Posted on Mar 24, 2010

  • 122 Answers

SOURCE: ford focus 1.6 zitec petrol, engine warning light

try the air filter first and the intake.the spark plugs then and after all go to a garage for checking compression timing and the head gasket.

Posted on May 28, 2010

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On the dash there is a switch/lever that allows you to select fresh outside air or recirculate the air in the cab. Any smell may be coming in the freash air position which would allow smelly air from the engine to come into the car. Check for broken flexible exhaust piece or leaking gaskets around the cat converter to start with or a hole in the exhaust pipe inself

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My 05 ford taurus smells of exhaust type fumes inside car. it used to be only at idle stops, but now i can smell it when i dive also. is this a muffler problem or what?


You need someone to check all of the Exhaust parts under the hood, then the pipes from the engine bay to the tailpipe. This is a dangerous condition.

Also look at a part called a PCV valve which is on top of the valve cover. The people at Autozone, Oreillys, and Advance will scan your car for defects for free and they can show you where the pcv valve goes. This valve is cheap, and makes crankcase fumes stay in the engine. It may be what you are smelling.

Ford has one of the better exhaust systems, using Stainless steel on much of the system. There are some smaller Pollution tubes going to the EGR valve and the plastic Solenoids have electric connections and Vacuum lines on them. Sometimes these metal lines can rust and will leave a smell of sulfur with a telltale rust deposit on them. Check those metal tubes out.

There are also metal parts referred to as "donuts" because of their shape and they fit on the joints between the bigger exhaust pipes and the Catalytic converter. You can have a leaking muffler as you suspect, but the exhaust fumes have to go through all of the rest of the parts I mentioned, just to get to the muffler.

I hope my Solution is very helpful to you. Anything less than a complete Inspection is an unfinished job.

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Engine fumes leaking into car compartment through the ventilation system - how can I fix this problem ?


The main thing you will need to do is to minimise the amount of 'excessive' engine fumes being generated in your engine compartment which in turn will 'leak' into your car compartment: 1) Degrease your engine and check for leaking oil gaskets especially around the oil refill area: oil leaks at the back of the engine falling on your hot exhaust pipes and on your engine block will generate lots and lots of 'nasty' smelling fumes! 2) Check that your exhaust pipes joints are well sealed especially the one contained within the engine compartment: taking great precautions, check for the obvious leaks from smoke emitted but you could use soapy water to assist. 3) Check that the lining in your engine compartment are in good condition taking particular attention to the 'Firewall' ones (e.g. the one between the engine compartment and the passenger side compartment). 4) Check for broken heating/cooling air hoses leading into the passenger compartment.
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I have a 2000 volvo S70 i smell fumes in side car when driving went to get exhaust checked no problem there what can the problem be?


What type of fumes are they exhaust or oil burning.
Exhaust ..Idle engine and put glove on hand put hand over the tail pipe and if engine stops in 20 seconds then the exhaust is good if it keeps running then its the exhaust is your problem..
2 if ex ok then its due to the breather pipe on the engine and it should go back into the inlet manifold to be reburnt but if its not fitted or rubber hose split or broken then thats what you can smell.
So check out under the bonnet and see if you can smell or see any smokey fumes or sucking noise.
Can you see smoke when you start engine.
Let me know ASAP Ron

Nov 23, 2009 | 2000 Volvo S70

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as for the engine lights , it con=mes on from reports from the engine and the transmission so have the fault codes read to find which sensor is reporting a fault
could be that same sensor that reports on the exhaust problem
hard to start is an electronic reporting fault and that will be in the codes as well

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