How do I test the wiring for the fuel pump on a vehicle? What are the symptoms of a clogged fuel filter? What are the signs of E85 contamination? What should I do when I install the new pump and it doesn’t work? Get the answers to these questions and...
The Chevrolet Blazer and GMC Jimmy are popular GM vehicles, and in 1998 they were equipped with a number of vehicle options that make determining the correct fuel module for either application confusing. These vehicle applications could potentially offer three different fuel modules to fit.
Fuel pump replacement comebacks can be costly and can hurt your reputation. One of the leading causes of failure is the tank. If a vehicle gets 20 miles to the gallon, then more than 5,000 gallons of gas (from many stations) will go through the tank in 100,000 miles. During...
Import Specialist Contributor Gary Goms discusses how contaminated fuel can mimic the symptoms produced by defective fuel pumps, fuel injectors and fuel control components like mass air flow (MAF) sensors. Although cases involving contaminated gasoline are relatively rare nowadays, they still occur. In many cases, the technician has replaced the...
In this study on the causes for foul fuel finding its way into your customer's vehicle tank, we find that there are normally three reasons - refinery mistakes, poor
Gary Goms discusses the mechanical challenges of restoring a truck that he began maintaining when he went to work in a gas station - back in 1957!
The most common diagnostic procedures for fuel pumps in the past were analog and hands on. Most fuel pump-related problems could be solved with a pressure gauge and voltmeter. Today, the scan tool is the most important tool when diagnosing a fuel supply problem.
