Skip the auto shop - Our mechanics make house calls

Q: Exhaust and radiator.

asked by on

Belief that the exhaust mounts are broken causing erratic vibration with the smell of fuel to go along with it. The radiator is brand new with to Brittany France and it suddenly overheating again after a week from installation.

My car has 260000 miles.
My car has a manual transmission.

A: This sounds like potentially a catalytic co...

This sounds like potentially a catalytic converter issue in addition to broken exhaust mounts. The smell of fuel along with the overheating suggests that the catalytic converter may be clogged. As you may know the catalytic converter converts toxic exhaust gases to cleaner exhaust. When the catalytic converter becomes clogged, this does not allow the car to expel the toxic combustion gases (think of a clogged sink) which then backs up into the exhaust system causing overheating and very rich fuel smells as you describe. I would suggest having an expert from YourMechanic come to your home to diagnose this overheating issue and make necessary repairs including replacing your catalytic converter.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Temperature spiking up after I changed my thermostat trying to get my heater to work.

The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you know, the heater core...

Q: Starter broken

If your car cranks you can check off battery and starter, they work. If on the other hand the starter clicks and wont turn the engine at all, I would suspect either starter or battery until they can be verified...

Q: My truck cranks but is slow to start. It idles rough and stalls out. I've already replaced my fuel pump - what could it be? 1997 Dodge Ram 1500

Hello - I believe your problem is low fuel pressure, at least during the cranking phase. If the fuel pump check valve is not maintaining pressure in the fuel system while the engine is turned off, cranking time is long...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...