Exhaust system

ANSWER : Hi There,
Adding any kind of performance exhaust system to your vehicle should increase your fuel economy slightly. Some things to consider are also having the computer remapped to account for the change in exhaust flow. This will allow the motor to run smoothly as the change in exhaust flow will impact the way the engine runs and how the oxygen sensors read the fuel and oxygen content coming from the exhaust. As to the warranty, you will need to refer to your local Chevrolet dealer to find out if this will impact the warranty.

ANSWER : Hello – most likely, this is an exhaust leak between the exhaust manifold, and the cross-over pipe. Removing the cross-over pipe will be the required process to replace the leaking gasket if this is the source. i recommend a engine noise inspection performed by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, confirm this diagnosis, and give you an accurate assessment of damage and cost estimate for repairs.

ANSWER : Hi there, thanks for writing in.

It sounds like you are having a serious electrical malfunction, which is very hard to diagnose without being able to look at the car first hand. The first step to diagnosing your electrical issue would be to scan all the relevant control modules in the vehicle, to see if there are any faults relating to any of these issues. It sounds like somebody at the dealer has been trying to fix this problem, so it may be a more involved one. I have personally seen failed control modules cause things like this, but that is no guarantee that it’s the problem in your case. It would be best to have a qualified independent technician, such as one from YourMechanic, look at your car to diagnose your electrical problem.

ANSWER : Hello. When it comes to power issues while driving, it is typically related to the charging system in some way. A miscommunication with the battery would effect the performance. Before getting too technical, start with the simple stuff. Check the alternator output with a voltmeter, or have it tested at your local automotive store. If both the battery and the alternator are in good working condition, then you can turn your attention to a control module or a programming issue. The warning codes that are being triggered should be read and used to help in the diagnosis. If several different systems are failing, you will likely have a charging system error, or a malfunctioning control module. Further testing is needed.

ANSWER : Hello. These systems are interconnected, since both of them can control individual wheel brake functions when operating. It is likely that one of the speed sensors are failing. To have this verified, have a qualified professional, like one from YourMechanic, diagnose the warning lights, pinpoint the fault(s), and make necessary repairs.

ANSWER : Your car’s anti-lock brake system is designed to help prevent you from locking up the wheels during hard stops, as that can cause you to go into an uncontrolled skid. The system activates during certain hard stops and pulses the brakes on any wheel that is turning faster than the others. However, there are some precautions that should be followed, as well as several important things that you should know:

The ABS system doesn’t work well when you’re driving on any surface other than pavement (dirt, gravel, etc.).
ABS doesn’t prevent you from hydroplaning.
ABS doesn’t reduce the stopping distance. In some instances, it can increase the required stopping distance. Drive cautiously.
Driving over potholes, uneven roads, driving with tire chains or cables and driving on snowy or icy roads can lead to less functionality from the ABS.

ANSWER : If you have an Accord with an in-dash navigation system, there’s good news. Most of your audio system functionality still comes from the standard buttons on the interface. However, there are some things you can only do by using the “interface dial”. This is the large knob on the lower center portion of your system. It combines three different elements:

The enter button
The rotating knob
The selector direction pad (up, down, left and right)

The selector pad is what lets you access the menu system, and scroll through lists, menus and other items.

To access a menu item, use the arrows or knob to highlight it, and then press enter.

ANSWER : The trouble with small exhaust leaks is that they always turn into large exhaust leaks. The hot gas leaking past the gasket will eventually burn up the gasket making the leak worse. If not corrected, it will also burn the surface of the exhaust manifold. It rarely goes so far as to burn the cylinder head, but that can happen in extreme cases. To make matters even more complicated. having an exhaust leak also allows air to enter the exhaust stream and messes with the oxygen sensor reading. Mixture too lean trouble codes will follow as the system shifts rich to try to correct. So, if you want to keep this truck, you need to get this fixed. I’m not sure I buy the line about the head being warped enough to prevent the manifold from fitting, maybe you should get a second opinion on this. You can have this done by contacting Your Mechanic. They will send a technician to your home or office to check out your exhaust leak and let you know what can be done about it.