Popular questions

When a gearbox fault is present this means that an issue has occurred in the transmission. There are multiple shift solenoids in the transmission. If any one of these malfunction in anyway the light could be set. Mechanical issues can...

Hi there - great problem description and summary of prior work! Next level of diagnostics awaits - if you feel the vibration primarily through your fingertips on the steering wheel, the problem is likely front wheel balance, or a worn...

Hi - yes, it should be possible to only remove the serpentine belt idler pulley. After carefully releasing the tensioner, and removing the serpentine belt, there is a plastic cap at the center of the pulley. Pop this cap off,...

Hi there. Check the transmission fluid level and color. The fluid should be full when the engine is running at either cold or hot conditions. Plus the fluid should be red in color. If the fluid is dark red in...

Hi there. Check the transmission fluid level and see if its full and the color red. If the transmission fluid is low, then top it off and see if there are any external leaks and see if the transmission will...

A few different things may contribute to oil consumption and poor fuel economy. Typically, high oil consumption is related to worn piston rings or worn out valve guide seals. In your case, it is unlikely this is related to worn...

Hi there: Depending on what's causing the grinding noise; whether it's the brake pads grinding on the rotor, it's possible that the rotors and pads both need to be replaced. However, if the car is making a similar sound when...

If you have not serviced the transmission within the last 60,000 miles, you may want to try that. I recommend you have a shop drain the transmission, remove the pan, and replace the fluid and filter. I prefer doing that...

Yes, it's a good cleaner and additive. I know people who have used it. It's very good on old junkers that have lots of problems and they clean them out. It's not a miracle. A lot of times, people say...

It could be that the wheel bearing was damaged during installation. or it could be that the noise was mis-diagnosed and replacing the wheel bearing didn't solve the problem. There are many stories about mechanics charging for work that was...

Hello. Thank you for writing it. A clunking noise can absolutely be a transmission mount that has failed. Typically you can examine these visually to see what kind of damage has occurred. You will want to look for cracks, bends,...

It sounds like there may be some faulty wiring related to the ignition coils. If the problem stops as he grounds it, this suggests it may not be getting the proper ground to begin with causing it to not produce...

You should first verify the a/c system is full of refrigerant and then while running ac verify the compressor is turning on and engine cooling fan comes on also with it. If they do not then you may have a...

As the problem is fairly uncommon, it is likely the engine ecu did experience a processing failure and caused many warning lights to illuminate once the computer lost communication with the other systems. All of the systems where warnings came...

Wow! Very disturbing issues to experience, especially the electrical smoke with your family in the vehicle. Based on what you've told me about you 2998 BMW 740i, this is not going to be a quick one to diagnose and repair....

If you are loosing coolant but do not see signs of any leaks, then there is only one other place for it to go. In the engine and most likely out of the exhaust. It's possible that you may have...

Tires that "appear" perfectly balanced on a dynamic balancer can still vibrate like crazy on a car if there is significant radial force variation in the tire construction, defective belts, cupping, uneven wear and so forth. If you have moved...

Hi Juliet. Thanks for contacting us today. The reduced power light usually indicates a rather major system failure, ranging from a damaged throttle body, engine control unit, or throttle position sensor. It's also common for bad O2 sensors to trigger...

Hi there, Code p0025 indicates a problem with the camshaft position sensor on bank 2 reading a over-retarded condition. It indicates that there is a problem with the variable valve timing system (VANOS) and needs to be diagnosed by a...

Checking the coolant is an important part of keeping your vehicle well maintained. To check the coolant, follow these steps: 1. Open the hood, when the engine is cold. 2. Locate the engine coolant reservoir. 3. Look at the fluid...

Hi - having changed the brake light switch (most common source of this problem) and confirmed that brake lights are now working (if not, check brake light wiring - switch does more than brake lights), the shift interlock solenoid is...