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The powertrain control module (PCM) sends the mass air flow (MAF) sensor a 12-volt reference signal. Incoming air flows over a wire inside the MAF, which allows it to measure intake air temperature, and therefore air density. The MAF then...

Hello, thanks for writing in. Of course, the timing of the transmission breakdown you experienced and the impact you are describing is too coincidental to be unrelated. You have not described any damage to the transmission oil pan, which would...

The smoke could be burning oil. If the smoke occurs just at start up, the source could be leaking valve stem oil seals. If the smoke continues but is mainly white, that could signify an internal coolant leak. P0456 refers...

Your power steering system should not have anything to do with the coil springs or air shocks as these are entirely different systems. This may suggest your power steering pump may be failing or potentially your rack and pinion system...

This code is related to a faulty throttle position sensor. The throttle position sensor (TPS) is a sensor used to monitor the throttle position of a vehicle. The sensor is usually located on the butterfly spindle/shaft so that it can...

Hi there. The overdrive light flashing is, the time a fault is recognized by the PCM (Powertrain Control Module) and/or TCM (Transmission Control Module). The fault code for the overdrive problem should store in the computer's memory. This should help...

You actually have four camshaft sensors. Two on each head and one for each camshaft. There is likely a deeper issue that should be diagnosed. 1208 is "Constant adjustment of intake camshaft or right cylinder bank in direction retarded."...

If you delete the proportioning valve, too much brake line pressure will be directed to the rear brakes, and too little to the front, thus possibly causing the rear brakes to lock up with loss of control of the vehicle....

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The horn button contacts are worn and the horn button and clock spring needs replaced. When replacing the horn button and clock spring, clean all of the contacts in the steering wheel to ensure that the horn button will make...

An experienced technician will be able to determine whether the stalling is directly connected to the application of the brake pedal. The vehicle is equipped with a brake booster which uses engine intake manifold vacuum to offer power assisted braking....

Hello. On automatic transmissions, the shift solenoids run by your speed sensors (and other sensors), will allow the RPMs to climb dramatically before a shift. If one or more of these sensors have failed, there is a chance your vehicle's...

I would ask what codes they found and how they determined the fuel pump was the cause. They likely diagnosed the pump by measuring fuel pressure. You didn't say what kind of Hyundai you have, but generally, fuel pressure should...

Hello. From what you describe it would appear that your vehicle is experiencing some sort of issue with the electrical system. If the alternator is not charging, even after being replaced, then it may be possible that there is an...

Hello! Thank you for writing in with this question. This concern is likely related to the Throttle Position Sensor (TPS). If the TPS is faulty, it sends an incorrect signal to the vehicle’s computer system, which can result in surging...

Hi, thanks for writing in. I'd be happy to provide my insight. I recommend you have the engine checked for vacuum leaks, or and check if carbon is clogging the EGR valve. If you still cannot find the reason the...

You should install the brake cable before installing the brake caliper. You may have to turn in the caliper again to get it back over the rotor when installing it. If you want to have this done for you, a...

For your 2001 Chrysler LHS, the inner tie rods are attached to the steering gear with a retaining bolt and a lock tab. If the bolts are not torqued enough and the lock tab engaged, the bolts can back out...

Hi there. BMW is among one of the most restrictive in regards to the oil(s) they recommend for use. BMW has a set list of oil brands and types that are safe to use in their vehicles. Your vehicle’s class...

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...

The parking brake is a very important safety feature that keeps your vehicle from rolling away when parked. To engage the parking brake, press down on the parking brake pedal, which is to the left of the brake pedal.

From what you described, this noise could be coming from the front bumper while turning, which can become dislodged during sharp turns and pop or clunk back into place when the wheel is turned to its original position. This will...

Hello. Although it's very difficult to diagnose a problem without being there to inspect in person, it appears you might have multiple issues. The vibrating/clicking sound when you steer may be due to a CV joint that may be damaged...

Hello. If your vehicle is experiencing shifting issues and has not had the transmission serviced after nearly 100k miles, it may very well be time for a service. Automatic transmissions operate using the fluid pressure to shift automatically. If the...

It sounds like there is some type of drain on the battery. When there is low voltage in a battery, it can cause several symptoms. The electrical systems can act very strangely when they don't have the correct voltage being...