my daughter says car has a oder of rotten eggs or eggs what could this be?

Answer 1

Defintely the catalytic converter ( am I the only mechanic that knows how to spell? ). Also, it may NOT need to be replaced, but it must be checked out by a mechanic you can trust. They are very expensive to replace and shops love to get all the money 'book' ( what the ASE book says they can charge for replacement ) they can so make sure it is checked by someone you know. If you have from 70,000 ( on some older Nissan Z's with turbo ) to 100,000 miles you may need a new one. If you have 100,000 miles and the car is American, again, you may need a new one. Most foreign cars get over 150,000 before the catalytic converter starts smelling. I have a 1979 Toyota SR5 truck with 300,000 and the catalytic converter is still good, so go figure . . . . .

Answer 2

Ok, everyone here agrees that the catalytic converter is going bad. But what made it go bad? Usually if the engine is running in a continually rich condition, this will tend to overheat the pellets in the converter, melt them and then plug it. The rotten egg smell is the converter getting very hot and melting the pellets. You need to replace the converter, then you need to repair the cause of the rich condition. At most auto parts stores they sell cleaners to help remove the rotten egg smell, but i believe that this is just a temporary fix at best. Is the check engine lite on? How long was it on for if it is? Address the problems and repair as necessary.
good luck...

Answer 3

i hate to say this but all the people that have answered u are wrong the catalytic converter is like an oven what it does is heats up really hot from the temps of the exhaust gas any raw unburned fuel or emissions that the engine produces are reburned in the catalytic converter the cat is doing its job the car is overloading on fuel take it to a shop have them check the O2 sensor or oxygen sensors also have them check the fuel trim and the coolant temp sensor the car is probably not goin into what they call closed loop meaning stoikeometric fuel consumption or ur not getting optimum gas mileage ask ur daughter if she has had to fill up more than regularly lately and if the check engine light is on

Answer 4

it is probally the catalitic converter. when it gets clogged it starts to smell really bad. it is part of the exaust system. it is a a cylinder shaper canister under the car. it is the smaller of the two. the larger one is the muffler and the muffler is located more toward the rear of the car. depending on the year and make of the car, they run around a $100. good luck.

Answer 5

catalytic converter is going bad. i had this probelm with a 1986 Buick regal. it will cost normally around 100 - 150 but it depends on the car

Answer 6

like everyone else the converter is probably getting bad you can check this at night run the car long enough so it gets the converter hot look under the car and if its glowing red you know it needs to be replaced..good luck they can get pretty expensive

Answer 7

Most likely the cat, but if the voltage regulator is bad the battery could overcharge and make that smell too. You can take it to any parts house like Advance and they can check the voltage.

Answer 8

in the passenger section or coming out the tailpipe?

if its in passenger could be residual exhaust leak ofsulfur dioxide gas. could be something rotting in vents, or carpet stinch. could also be fresh air vent full of rotting debris.

if its coming out of tailpipe, either catalytic converter usually ruined by running too rich or by having burnt leaded gas in unleaded system. this is also sulfur dioxide gas or "rotten egg" gas.

need more info.

Answer 9

A sure sign that the catalytic converter has gone bad.

Answer 10

could be somethingh rolled under the seat and then got distributed when you turned on the a/c or heat i know it's lame but it's all i could come up with