Popular questions

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I have a 1995 dodge ram 1500 with a 5.9 L Magnum and it is making this weird noise that started after a heater core exchange
Hi and thanks for contacting YourMechanic. First find all of the vacuum lines that are cracked and replace all of them. Then check the heater control valve to see if it has a vacuum leak on it. With the heater...
Question
Van leaking coolant
It sounds like there is a large coolant leak, especially if the system is loosing a considerable amount of coolant. The cooling system will need to be inspected for the source of the leak. Many times the source of the...
Question
How do you make sure readiness codes are set in the computer for emissions testing?
If you live in an area where emissions testing is mandatory, you’re no doubt familiar with the hassle of not being able to test your car if the readiness codes aren’t set. Thankfully, there’s a way you can help make...
Question
BMW e90 320d jerking at pull away, and in 2nd gear, reduced power, turbo sound has changed.
Hi there. Since this occurred right after driving in some dusty conditions, I would check the air filter first. If the air filter is dirty then this will occur. If the air filter is fine, then I would also clean...
Question
No pressure after the FPR
The fuel pressure regulator will regulate the fuel pressure by allowing fuel to return back to the fuel tank if the pressure gets too high. If the fuel pump never produces enough pressure and volume of fuel to run the...
Question
Car wont turn over.
This may be related to many different possibilities, some of which may be related to a lack of spark and some of which may be related to a fuel delivery problem or a combination of both. For example, if the...
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Car smoking
Smoking coming from under your hood can be a couple of things. If there are any leaks, for example a leaking valve cover could be dripping oil down onto the exhaust manifold. This can sometimes come with a smell through...
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My Ford f150 has a misfire on #4and#7 I checked the coils and plugs but they seem to be firing what else do I need to do
In order to isolate the cause of the misfire you will need to do an engine compression and leakdown test to make sure the compression is good and no valves are burned. If compression test is good on all cylinders...
Question
My car will not shift out of drive and into park - 1999 Hyundai Sonata
Hi. This sounds like the ignition switch has a problem and is not allowing the car to go into park. If the ignition switch is not sending the signal to the neutral safety switch that the key is in the...
Question
My car will not start when I turn the key, it just makes a clicking sound. What is wrong?
A starter like any other mechanical and electrical part is subject to failing sometimes for no apparent reason. However, sometimes this is misdiagnosed as well and often times mistaken for something much more simple like a fuse, relay, or starter...
Question
Rough start but will start fine after about 5 minutes of running. Now ticking has developed.
Hi there. A ticking noise on the front of an engine that comes and goes could be the drive belt tensioner being worn, pulleys out of alignment causing the components to fail making the noise, or the timing belt tensioner...
Question
Car starts but idles rough and stalls
Hi There, A few different things will usually cause the vehicle to start and then die. A bad ignition coil can cause this if it is beginning to fail, resulting in intermittent starting problems. A dirty or faulty mass air...
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While driving my battery light and engine light came on and steering wheel was almost locked, had to strong arm it to barely turn
The serpentine belt that drives the power steering pump should be checked. Even if the belt looks OK, and is tight, all the rotating elements (pulleys and accessories) should be checked for binding. If there is a problem in that...
Question
How often should I replace my tires?
Eventually, the time will come when you have to replace your tires. No matter how gentle you are, you just can’t make them last forever. When that day rolls around, make sure you do things right. What does that mean?...
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What is the evaporative emissions control system?
Gasoline evaporates, even in the gas tank of your Accord. If those fumes are allowed to escape into the atmosphere, they create hydrocarbons that damage the environment and also contribute to smog/air pollution. To help combat this problem, your car...
Question
What should the pressure be in the spare tire?
A246. Your spare tire is a vital safeguard, and the only way to get safely back on the road after you’ve had a flat. However, if it’s not aired up correctly, you might not be going very far. Check your...
Question
Car clicking when starting.
The starter solenoids on the expeditions are known to just quit with no warning. Before replacing the solenoid however, the battery should be fully charged and load-tested to eliminate it from being the issue. The solenoid is tested via a...
Question
Speedometer broke.
Hello, to check the operation of the speedometer, a scan tool needs to be connected to monitor the speed sensor output and see if it has any output, and if it is smooth. You will probably need the aid of...
Question
Gear oil leak.
Hello. Pinion bearing seals can leak due to normal wear or as a result of excessive pinion bearing play. A growling sound can indicate a worn pinion bearing as well. If the noise changes during acceleration, the cause is most...
Question
Smoke from the hood - 1996 Ford Mustang
Hello there. You will need to see if the engine valve covers are leaking oil and running back on the exhaust or if the transmission is leaking oil onto the exhaust near the dipstick tube where it goes in the...
Question
Misfiring cylinder
Hi there. There are a couple of different reasons why a single cylinder would be misfiring. A common issue would be a lack of continuity throughout your spark plug coil, wire, and plug. Another problem you may be having is...
Question
I went out of town and trunk wasn't shut, so battery was dead and had to jump it.
Hello, thanks for writing in. If the vehicle started back up then it is not likely that the alternator is bad. If the alternator was bad, the battery would have been low and you would not have been able...
Question
Got a code of p0851 on 04 Forester xt. Shifter was stuck in park but I was able to jiggle it free. Today the oil light was flicking and stalling. Are these Related?
Hi there. The neutral safety switch (transmission position switch (sensor)) on the transmission and the engine oil light on the dash have nothing in common. If the neutral safety switch has failed, then the transmission may start in gear or...