Popular questions

Hi there - first task to to extract the problem codes that are causing the Check Engine light to illuminate. This will guide diagnosis, and save time and money. Most auto parts stores will read codes for you for free....

Hi there. Have the codes returned since the repair? It sounds like the valve timing control valves are sticking. The valve timing control valves control oil flow to the valve timing actuator and are a duty cycle type controller. The...

Hello. This can be caused by a few different things, but most of the time it is caused by the transmission speed sensors. I usually test the sensors first and replace them if needed. This is going to be the...

What you are describing sounds like 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 engine at low speeds and...

It looks like you're using the Star Diagnostic system. So you are getting Mercedes Proprietary codes. The codes may not be published in a place where you can access them without going through Mercedes. They guard a lot of their...

Hello, the first questions to answer are "Are any problem codes set? Is your Check Engine light on?". Based on your observation of "no power", and your extended mileage, there are several problems likely that would result in "no power":...

Hi there. Most of the codes that are coming on are for a misfire on cylinder number 3. Check the spark plug and wire on cylinder 3 and see if you are getting a good spark. Then check the fuel...

Hello there, in most cases the check fuel cap warning and the vehicle shutting off are not related. The check fuel cap light is shown due to the a leak detected in the EVAP system. When leaks like this occur,...

Here is a breakdown of the wiring color codes, and the associated voltages on each, for engine running and ignition on. The signal from the mass airflow sensor should steadily sweep from 1.9 to 5 volts as you press and...

This problem of erratic idle speed is often referred to as "surging" or "hunting". The causes include a faulty idle air control valve or circuit (IAC), a faulty ECM (not common), faults in the fuel pump control circuit, defective spark...

Looking at the Isuzu repair documentation, I see no service bulletins that would indicate a programming update for an extended crank or no-start condition although there are software enhancements all of the time and not necessarily a bulletin-related to the...

What you are describing sounds like a dirty or faulty mass air flow sensor. The mass air flow sensor monitors air intake as it is mixed with fuel prior to being injected into the motor. This sensor relays vital information...

Hi There, It sounds like you are describing the symptoms of a failing throttle position sensor. The throttle position sensor monitors the throttle position of the throttle plate inside the throttle body in relation to your foot position on the...

The transmission speed sensor sends a signal to the transmission module and the engine control module to control the transmission shifting. The RPM and MPH gauges can be getting wrong signals from the modules if the modules are getting the...

Hey there. I would recommend letting them diagnose the problem rather than just simply telling them to replace the fuel pump. The vehicle is under warranty since it is a 2016 model. For Hyundai warranty to pay the dealer for...

Hello. The codes you are getting are for the exhaust fluid injection system. Most of the time, this is the result of a failure in the fluid sensor. In some cases, the tank and sensor can be cleaned but most...

Hi there - the "combustion bang" you hear taking place at the header flange probably indicates a leak at the donut gasket as you suspect. Unburned, or still burning, fuel catches some fresh oxygen at the flange, and ignites, producing...

The transmission needs to be inspected to determine the source of the leak. If the leak source is not obviously identified, Nissan has a TSB out NTB09-140 which discusses the proper diagnosis using a UV dye to locate hard to...

You probably have a problem with your brake booster or the vacuum line to the brake booster. The brake booster is a vacuum driven device that helps pull the brake pedal down according to the amount of pressure you put...

Billing question sent to CS for the cost to replace all the components in the cooling system in a 2004 Volkswagen Passat with a L4-1.8L Turbo engine.

Hi there. If you haven't completed this type of repair before on this vehicle, I would recommend having a professional mechanic complete your rear axle shaft replacement for you, as it can be rather tricky. If you want to complete...

It is common on this engine for the spark plugs to pop, and there are two typical fixes: either the spark plug hole could have a new insert put into it, or the head will have to be replaced. I...

Simply put, the engine only requires three things to start: fuel, air, and gas. The car is likely not receiving one of these in the right amount or at the right time. You can do some simple tests to help...

Most of the time, replacing the components that you did will take care of the P0017 code. Lack of oil flow to the actuator can contribute to the code. Also, using motor oil that has a different viscosity rating from...