Popular questions

Hi there. You could be losing antifreeze in either the combustion cylinders or the engine valley. Inspect the spark plugs for signs of antifreeze entering the cylinder. If there is an intake manifold leak or any other leak that could...

Hello - how unfortunate for both of you. It is possible, since the engine/transmission of your Fit is very close to the front of your vehicle - but unlikely. You would have to impact the BMW all the way to...

A vehicle with 182,000 miles is likely due for a catalytic converter. Most of the time it does mean you need a new catalytic converter. But there are a couple of other things that are prudent to take a look...

Hello! It sounds like you may have a dirty or faulty 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 at low speeds...

There is a valve that is by the fuel neck next to the fuel filler inlet that measures the fumes from the gas cap and related areas. This valve is known as the EVAP purge solenoid valve. This valve controls...

Hi - it is quite possible your engine is running in "open loop" when the idle sensor is disconnected, simply because the engine computer realizes that a crucial sensor is missing. By design, open loop running will be a richer...

I often hear about getting an oil change then something is wrong afterwards. I can say from experience that that the oil change itself won't cause your car not to start. I explain coincidental failures by relating them to a...

This is a sign of a dirty or 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 motor at low speeds or at...

Hello. I think your decision will come down to your personal tastes. The G37 is the newer model, has a bigger engine, more power and is a little more advanced than the G35. At 100k there are a few things...

For the first issue, the gas cap will need to be replaced sometimes. I had a 2009 Dodge Charger that this happened to also. It's not something you can control. As for the second issue, it seems like it is...

The charging system is not recharging the battery. This is why warning lights are on the dash and the vehicle loses power. It will jump start and run until the battery runs out of juice. The most common problem...

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...

A vacuum leak is a possibility but another possibility would be an exhaust leak. Both can cause a whistling noise when the engine heats up. A vacuum leak is more likely to change with engine speed. A qualified technician, like...

Your car’s message center (if equipped) is “information central” for a wide range of different things. It can show information about tire pressure, about doors that aren’t closed and a great deal more. Of course, there are a few things...

You may have caused the theft system to lock out the start circuit. Try to close and lock the car and come back in an hour and unlock and try to restart the car. If still no start then you...

This may be related to a few different things such as a faulty idle air control valve, low fuel pressure, or potentially an intake air leak creating a lean fuel condition. The idle air control valve monitors the air intake...

If you have a battery that is on the verge of going bad and is only at 79% then what can happen is you could have the other electrical loads cause erratic operation at lower engine rpms. If you have...

Hi there. If a high idle is the concern a sticking idle air control valve or a vacuum leak could be the problem. Has anyone attempted an idle adjustment? If so, reset it back to the factory position. Listen around...

Hi There, Depending on whether or not the vehicle will turn over will determine what the next step should be. If the engine does not turn over, I would recommend checking all connections related to the battery and check to...

The heater control valve is located in the engine compartment, on the firewall. From the illustration, it appears to be either in the middle of the firewall, towards the top, or on the passenger side. There will be a couple...

This may be a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission...

During the most recent episode when the car yet again failed to start, the diagnostic would begin with testing of the battery. If you have a fully functioning charging system (you mention the alternator is new but charging system should...

You may have a dirty or failing idle air control valve. The idle air control valve reads the air intake as it is mixed with fuel prior to being injected into the engine at low speeds and at idle. Since...

Hi there. Check the battery for voltage of 12.6 to 12.4 volts. If the battery is low, charge up the battery and retest. Check the battery cable connections and make sure that they are tight. Check the cables on the...

If the engine you are substituting is not a catalog OEM replacement, you will have to change (or modify) both the engine wiring harness and the engine computer. Engine computers are not interchangeable across engine families or even from year-to-year....