Popular questions

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Brakes
There are several places where a malfunction can cause air to enter the hydraulic brake system. Of course, air can enter through a ruptured hose or brake line, but it can also enter through a faulty master cylinder, anti-lock brake...
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Car making grinding noise.
The water pump is the most common part changed on this motor and year. The noise once heard could be isolated to the water pump or a tensioner pulley. I recommend to have the system checked by a qualified mechanic....
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Truck won't start after warming up
You need to check the purge valve to see if it is leaking vapor into the intake when at idle and when the engine is off. If it does then it may be bad and needs to be replaced. Check...
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Check Engine Light came on
You need to have the purge valve checked to see if it is flowing vapor from the fuel tank when the engine is at idle. The flow will cause the engine to run too rich and can cause the cylinder...
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I just chang my battery and alternator car still would not start have no power at all in the car nothing comes on.
You will need to first check to make sure the battery clamps are clean and getting good contact to battery post. If okay then check all major fuses are not blown and if they are all good then you may...
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Loss of power my tool says map sencors is bad burning rich
Hello and thank you for contacting YourMechanic. If the engine light is on for code P0105, then the computer has lost communication from the MAP (Manifold Absolute Pressure) sensor. Check the harness to the sensor for any corrosion and look...
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Source of a whistling sound
Hello, thank you for writing in. When dealing with something like this, the best thing to do is have someone else start the vehicle and listen carefully to try and pinpoint exactly where it is coming from. If the belts...
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I'm losing antifreeze somewhere
You would need to have the cooling system checked to see if a head gasket is leaking internally, or there is an external leak that is causing the coolant loss.
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Oil pressure light illuminates when vehicle is idle.
The oil pressure switch on the engine is open or closed. As long as the pressure is normal, the switch stays closed causing the PCM to signal the instrument cluster to move the oil gauge to normal range. You should...
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What’s the correct procedure for driving?
Whether you’re an old hand at driving or this is your first vehicle, it pays to know the specifics regarding getting your car out on the road. While it’s not terribly complicated, there are a few things that should be...
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How often should change oil 2003 c240 Mercedes-Benz
Hi Kelvin. Thanks for contacting us tonight. Mercedes recommends having the engine oil and filter replaced every 5,000 miles. However, with an older engine above 250,000 miles, you should probably change the oil and filter every 3,500 miles to extend...
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Air conditioner not blowing cold
The a/c on these vehicles have a few different things that can render the AC inoperative. The most common is the compressor failure. The compressor failure would require multiple parts to be replaced if it fails. I recommend you have...
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Tries to run but won't get over 400 rpm before dying.
Hi there. Check for the three essentials that the engine needs to run, fuel, spark, and air. If you are having fuel and the pressure is 30 psi or higher, then check for spark on the spark plugs and wires....
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It’s 7 degrees outside and my car won’t turn on
Hi Bruce. Thanks for contacting us today. In extreme cold temperatures like you've described, many car batteries simply don't have enough cold cranking amps to engage the starter. There really isn't a solution to fix this problem besides jump-starting the...
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Engine hot, difficult shifting, shutting off
Hello there, thank you for asking about your 1987 Oldsmobile Cutlass Calais. A common problem that can cause stalling is a stuck torque converter clutch. This device connects the link between the engine and transmission, but should slip some when...
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Rough idle and sputters while driving
Hey there. This is a common sign of a failing idle air control valve. The idle air control valve monitors the air intake as it is mixed with fuel prior to being injected into the engine. This valve is controlled...
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1989 Toyota Land Cruiser hard right turn feels like it's losing pressure only when gas reads under 1/4 tank
Hi there. The issue seems to be that the fuel level indicator sending unit is not working properly. When your fuel gauge is reading at a 1/4 tank, it maybe at 1/8 or 1/16 of a tank causing the fuel...
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Engine not getting any spark
Hey there. This is a common issue. I would need to know what repairs were performed originally to fully answer this question. There are quite a few things that would cause a no spark condition. If the car is in...
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My car is hesitating and shifts hard - could that be a sensor or is the transmission going out?
If the transmission has over 200,000 miles, there might be a benefit to changing the filter and fluid in response to the shifting issues you are describing. Before you do that, though, have a professional carefully check the fluid level...
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Whining sound accelerating
Hi there, thanks for writing in about your 2007 Volvo V50. On vehicles similar to yours, a whining or whistling noise coming from the engine can be the result of a malfunction in the positive crankcase ventilation system. When the...
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Hi Tien I have a 2006 Dodge Durango. I was told the O2 sensor may need to be replaced. I was quoted about $700. Three something fo
The price will vary for location for parts and hourly labor rate but this price of $700 should include replacement of all 4 sensors. If you are not quoted to replace all 4 sensors then I would suggest getting second...
Question
Engine idling and check engine light on
Carbon build-up on the intake valves is a common issue on the IS250. Lexus recommends to remove the valves and clean them while other manufacturers use anything from an intake cleaning solvent to sandblasting using walnut shells to remove the...
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Any ideas?
Unfortunately, there is no question here to answer. If you have a question that you would like answered by a qualified professional, please visit yourmechanic.com and click on the ask a mechanic link to ask your question.
Question
Does my car require synthetic engine oil or any oil additives?
Take a look at any auto parts store today and you’ll see a ton of different options when it comes to engine oil. There’s conventional oil, synthetic oil, and even conventional/synthetic blends. Any oil can be used in your Accord,...
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Car turns over but doesn't start.
There could be several reasons behind why your Honda Prelude will not start. A simple test you can try first yourself is to turn the key to the ON position (do not start the car) and see if the check...