Popular questions

Question
I smell gas and it blows white smoke out of the exaust.
Hi There, There are a number of things that can cause poor fuel mileage. A faulty camshaft position sensor is one of them. The camshaft position sensor is a magnetic sensor that monitors camshaft speed to regulate ignition timing and...
Question
If I replace my engine does it have to be the same year?
If you are looking to do an engine swap you should use the same year motor. This way you will not have different sensors and harnesses. Also you may have different exhaust, intakes, and accessories. From one year to another...
Question
GL450 has no power. It’s completely dead.
It's possible the battery might just be coincidentally dead. So, to rule that in or out, the first thing to do is load test the battery. If the battery is fully charged, then an electrical system diagnostic must be performed....
Question
My abs light came on and so did my brake light now my car wont start. Is it the battery or anything else?
Hi there: Although it's highly unlikely that those two warning lights would cause the Ford Focus to not start, it might be an indication of a faulty electronic brake control module. There are some instances where multiple electrical faults can...
Question
Car cranks but won't start below 10 degrees F
Hello, thank you for writing in. The cold weather is a hard battle to win. There are a few things you can do to help prevent the cold from effecting the engine so much when it drops that low. However,...
Question
location of knock sensors
The knock sensors are on opposite sides of the engine. Bank 1 is just above the oil drain plug, on the engine block, at the front of the engine. Bank 2 is on the back side of the engine, in...
Question
Check Engine light on, air conditioner not working, and car stalls
If your vehicle is stalling and shaking, and the Check Engine light has come on I would recommend having a knowledgable technician, such one from YourMechanic, scan the vehicle for trouble codes. Check Engine lights and engine performance issues may...
Question
When the ignition switch is left on ACC for a while, the car won't start
This is not an uncommon issue. Listening to the radio for 25 minutes with the car off is not a problem normally. But in this case, the most likely cause of this is either the ignition switch or the battery...
Question
My car is over heating and the coolant is running out fast.
This can be caused by a number of things such as low coolant levels, a faulty thermostat, a clogged radiator or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant...
Question
Ticking noise
Hello. A ticking sound from the engine can be caused by a few different things. Two of the most common causes, as you already figured, are from faulty injectors or an issue with the valve train. If the clicking is...
Question
Clicking noise from steering wheel
Hello, thanks for writing in. Most of the time this clicking noise is from the column covers rubbing on the steering wheel. I usually remove the covers and drive the vehicle to see if it goes away. If it does...
Question
Car misfires then goes to limp mode.
When the vehicle goes into limp mode when the engine misfires, the computer is shutting down the electronics to the transmission to prevent damage to the catalytic converter as the fuel condition is either too lean or too rich. Check...
Question
Popping out the exhaust and backfiring out the carb
Adding additional vacuum to the car when it is already backfiring will usually compound the problem due to the lack of fuel supply. Backfiring is most often a result of a lean condition. Adding transmission fluid to the fuel mixture...
Question
My DPFE sensor burned up. What do you think caused this and will it do a new one the same way?
Hi and thanks for contacting YourMechanic. The delta pressure feedback of EGR (DPFE) sensor was burned up for having too much back pressure on the engine. A plugged catalytic converter or a plugged exhaust muffler will cause the engine...
Question
Removing brake light bulb
Hello. The brake light bulb for your vehicle uses a twist lock type base. To remove the bulbs, gently push down to unlock them from the base, and then rotate them counterclockwise and out. If the bulb is stuck, gently...
Question
I have a 2013 Dodge Charger SXT Plus AWD and the service light came on saying "Service AWD"
Hi Bobby. Thanks for contacting us tonight. the Service AWD System light comes on when the ECU detects that there is an issue with the AWD system. When a fault is detected, it creates and stores an OBD-II trouble code...
Question
Gear shift is in park but dash says reverse
The shift cable ends at transmission shift lever or at where it connects to inside shifter is most likely the problem. The cable ends have a plastic bushing that falls apart and causes the problem. The entire cable may need...
Question
My car won't shift out of first gear at all.
Thanks for writing in about the transmission problem with your 1999 Mercedes-Benz S320. Typically the issue you're speaking about is a result of overheating inside of the automatic transmission. The overheating can be caused by dirty transmission fluid, or low...
Question
I have code p1603 and p0882 .last year i replaced the computer because a mechanic said so I had same codes
Hi there. The code that kind of indicates the root source of your problem is the P1603 - which is a Chrysler specific OBD-II trouble code that indicates PCM internal dual - port RM communication failure. This code typically occurs...
Question
Jerking reaction when accelerating
What you are describing sounds like a dirty or faulty mass air flow sensor. The mass air flow sensor monitors air intake as it is mixed with fuel prior to being injected into the motor. This sensor relays vital information...
Question
I just got a tune up now it's all of a sudden jerking and when I pull off has no acceleration
What you are describing may be a result of a faulty speed sensor, potentially low transmission fluid or a even a faulty transmission control solenoid. As your vehicle travels down the road, the computer analyzes data being sent by vehicle...
Question
I have an error code P0441. It is recommended that I replace the purge control valve. Where is this located and how do I replace?
Hi there. The purge control valve on your vehicle should be behind the engine air filter housing. You may have to remove the air filter housing to get to the purge valve. The valve is held on by a couple...
Question
Can a bad ignition coil cause a p0335 and a p0340
If you request a no start diagnostic the responding certified mechanic will identify the root cause of the no start and get this resolved for you promptly. The two codes that you note do not normally implicate the ignition coil(s)...
Question
Why my car makes metal knocking sound every time I accelerate, and it gone when I release acceleration pedal? It happens at 25+mph
What you are describing sounds like a failing CV joint. A CV (Constant Velocity) joint is a shaft that connects the transmission to the wheels, essentially transferring the power from the drive train directly to the wheels. The CV joint...
Question
Knocking/fluttering in rear end
Hi and thanks for contacting YourMechanic. If you have a limited slip differential, then having 2 different size tires on the axle will cause the limited slip differential to make this noise. Eventually, the limited slip will stop working and...