Q: 1999 Toyota camry le gets really loud when accelerating but muffler new

asked by on September 12, 2017

My vehicle gets really loud when hitting the gas but quiet when idling and the muffler is brand new so is the catalytic converter and tailpipe has been welded for leaks could it be exhaust manifold gasket or the manifold itself has cracks?

My car has 255000 miles.
My car has an automatic transmission.

Noise from engine or exhaust Inspection $79.99 - $99.99 Get a Quote

Hello. You are correct. The most likely cause is going to be a faulty gasket. Look at any joining sections of pipe from the exhaust manifold back. It is often hard to check certain parts, and that is where exhaust "sniffers" come into play. These are devices that detect exhaust fumes and can pinpoint a high concentration of them coming from a leak. There are other versions of these tests as well. You can also verify the work that was most recently done was done correctly. For more help, contact our service department to schedule an appointment.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing


Experienced Mechanic?

Earn up to $65/hr

What others are asking

What are the various Bluetooth controls and identifiers?

Your car supports Bluetooth connectivity, which allows you to do a number of things, from making calls without having to dial the phone to streaming audio. To use it effectively, though, you’ll need to know a few things. Here’s a...

Major coolant leak

It sounds like your truck overheated and caused it to turn off. One thing that could cause it to overheat would be a bad thermostat. I would recommend having the thermostat replaced and make sure there is coolant in the...

I have a 2014 nissan maxima. It smoking from the exhaust with a blueish gray look. There's no oil leaks on the ground.

Hi there. Check the engine oil level and see how low it is. If the oil is a little low, then the oil is burning in the exhaust system. This is caused by the valve guide seals leaking, the rings...

99 escort--smell gas inside car and trunk--dont see leaks--possible evap system problem?

Hi there. Typically when an EVAP system component fails or is damaged, it will cause performance problems, issues filling the fuel tank or other symptoms with the operation of the vehicle. If you are not having these problems, it's likely...

Truck doesn't like to go into gear while driving

Based on your description, I think one of two things is happening. Either your transmission fluid level is low causing the slipping or there is an internal transmission issue. I would start by checking the fluid level of your transmission....

Car makes a grinding noise when moving forward but nothing while you're moving backwards

There are a few things that could be causing your grinding noise. Typically this is a sign of worn out wheel bearings, but that can also happen in reverse as well. It's possible that you have a transmission issue or...

can a leaking manifold gasket cause an P0430 error code

Hi there. Unfortunately, the P0430 OBD-II trouble code is not something that would cause excessive coolant usage. The P0430 code is set when the ECU detects below threshold performance from the catalytic converter. The ECU monitors the catalytic converter closely...

when I turn left it makes a grinding scraping sound brakes are good but wheel wobbles up down

The problem is going to be in the hub bearings are worn out. This will cause the noise and tire wear on the inside. You should have the hub bearing replaced and also recommend having the other side replaced also...

What does the three way catalytic converter do?

Controlling engine emissions requires a lot of different components. Catalytic converters are part of your exhaust system, and are responsible for burning off harmful gases, or converting them into something harmless (like oxygen). Catalytic converters use precious metals like platinum,...

Related articles

Symptoms of a Bad or Failing EGR Cooler
Common signs include engine overheating, exhaust leaking, and the Check Engine Light coming on.
Symptoms of a Bad or Failing Exhaust Gas Recirculation (EGR) Valve
Common signs include engine performance issues like decreased power and acceleration, rough idle, and the Check Engine Light coming on.
Where Is the O2 Sensor Located?
Oxygen Oxygen sensors O2 sensors will always be located in the exhaust system. Their function is to sense how much oxygen remains in the exhaust that is flowing out of the engine, and report that information to the vehicle’s engine...