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So I put in aftermarket radio into my 02 Bonneville last Saturday and got it all wired up correctly. Later during the day it stopped working.
Hi there, well lucky for you I have a lot of experience with aftermarket radios. It sounds like you have whats called a remote wire that is supposed to be connected to the ignition so when you turn the key...
My car turns over but it has no spark and won't start
I would recommend starting with checking the ignition coils for spark as well as the spark plug wires. Oftentimes ignition coils are a problem when it comes to producing a spark, especially on a vehicle of this age. Also, try...
Excessive brake pedal travel , 2006 Town & Country
Hi there. From the description you have provided, your vehicle's brake problem is not something to live with. The brake system needs to be inspected and repaired, before you continue driving your vehicle. The brake pedal going 90% of its...
I can't get the car to turn over
To start, computers, aka PCM (powertrain control modules) rarely fail. They are complex units that require many different inputs to initiate the desired response. Having replaced your PCM already, you may have already traded in your old PCM as a...
All the dashboard lights came on. Car seems to be running fine
Hi there. All the dash lights coming on and staying on when you started your vehicle, leads me to believe, there is a problem with your vehicle's charging system. It could be caused by a faulty alternator. This would not...
My low oil light comes on but, when I start the car the second time, it goes out and the dipstick reads full
Hi. The most likely cause of this problem is the oil level sensor has an intermittent problem and is about to fail. There is electrical circuitry inside the oil level sensor that sends info to PCM. Sometimes this electrical circuitry...
Need a reliable brand for the belt tensioner.
Hello and thank you for contacting YourMechanic. Shopping around for parts can be frustrating when it comes to specific brands. Some brands are not as good as other brands, however, a low quality belt and a high quality belt should...
This may be a sign of a failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected into the...
My car is overheating and coolant is leaking
This may suggest a blown head gasket. When this happens, the cylinder head gasket fails which can cause coolant to leak into the combustion chamber causing it to be ignited with the fuel. This is what causes the light colored...
Charcoal can gas leak
All modern cars are equipped with an Evaporative Emission Control (EVAP) system. The EVAP system prevents fuel vapors from the fuel tank from escaping into the atmosphere. The EVAP system collects and temporarily stores the fuel vapors in the charcoal...
Car won't start - 1998 Pontiac Bonneville
Hi there. Disconnecting and re-connecting the battery, although the right thing to do while working on the fuel system, has tripped the security system and is not allowing a "start" sequence. (You don't mention it, but the security light in...
Car will stall while on a red light or at a stop randomly
Hi there. It sounds like the idle air control valve is sticking when you come to a stop. This valve closes when the throttle is open and reopens to maintain idle when you let off the throttle in the case...
Can an overheated engine cause a knock sensor to fail?
Hi there. From the description you have given, seems odd hitting a bird would damage the radiator, the condenser sits in front of the radiator. Regardless, high engine temperatures can affect sensors. The knock sensor could have failed due to...
The car makes loud shaking/jarring noise when the steering wheel is only slight turned rightward. There is no noise when turning left.
Hi there. From the description you have provided, the noise you are hearing from the rear of the vehicle and the feeling your vehicle has while driving, should be looked at sooner than later. The swaying (fish-tail) action, could be...
My speedometer intermittently works at about 1/2 speed.
As long as there is nothing wrong with the transmission, it would have to be a problem with either the speedometer drive cable, or the speedometer head unit. The drive cable is driven off of a gear in the transmission...
Drove through high water
Hi there. From the description you have given, driving through the high water, your vehicle stall, and no crank situation may be the engine hydrostatically locked. The engine took water in through the intake, into the cylinders, preventing it from...
Van jumps forward on the drive gear
Hello and thank you for your question. For the issue of the transmission jumping forward and making a thumping sound, there could be a few different things that cause the situation and sound. First check the condition of the brakes...
Car runs with the mass airflow sensor unplugged. If you plug it in it will die if the car is running.
This is a sure sign of a shorted mass airflow sensor. The reason it starts with it off is the computer sees no mass air signal and replaces it with an internal memory fake signal to use. This will let...
What can I do to get my car running? It tries to crank and start but it struggles.
If the car is cranking strong with the new starter, and just won't fire up, it's time to re-check the basics. Check for a good spark at the plugs. If spark is good, try spraying a bit of starter fluid...
Mass airflow sensor issue
This may be a sign of a dirty or failing mass air flow sensor. The mass air flow sensor is a unit in the intake system that monitors air intake as it is mixed with fuel prior to being injected...

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