Hard starting, loss of power, excess fuel consumption, check engine light, and a blowing sound under heavy acceleration.
yes and its illegal if your car goes through emissions
my guess would be a catalytic converter going bad. you can remove the front oxygen sensor and drive it. if the problem goes away then it is probably the catalytic converter. nth njth ///////???????????????????kldghavnivaetahdsngahe
The Oxygen (O2) sensors located in the catalytic converters help to keep the vehicle running cleaner. If an oxygen sensor goes bad, the vehicle might start to misfire occasionally. The catalytic converter can become plugged up if the oxygen sensor is not working properly. This could lead to the vehicle not running at all.
There are 2 oxygen sensors. The first is just after the exhaust manifold before it goes into the catalytic converter. The second is after the catalytic converter.
the shop I go to said that my 2000 Jetta would not pass the smog check when the catalytic converter went bad.
Hard starting, loss of power, poor fuel mileage are symptoms of a clogged converter.
Possible side effects include rattle noises, check engine light, different smell from exhaust, low power, low fuel economy,
Normally when a catalytic converter goes bad, it fills up with junk. It simply slows down the vehicle. You have the gas pedal to the floor and you are going a lot slower than you should be going. It does not make the vehicle buck. How long has it been since you cleaned out the fuel system? How is your electrical system? How are your plugs? Have they been checked in 8 years?
There is no way to fix a catalytic converter for a 1987 Mercury Cougar, since it is a sealed and unrepairable item. Once it goes bad, you must jack up the car, unbolt the old converter, then put a new one in its place and bolt it in.
Normally no, you will not hear any noise other than a blowing sound under full throttle. You will loose power, have poor fuel mileage, and the converter may become red hot.
Check heat shield on catalytic converter
Have it towed to a trusted garage for diagnoses and repair.