Question: my 2001 Chevrolet Suburban v the 5.3-liter V-8 has 115,155 mile on it and also is largely used about town. It started to idle roughly at random about a year back -- no every day, yet it wake up in spells. I changed the fuel filter and also have run fuel device cleaner through it a couple of times. This condition seems to walk away for a while after trips end an hour, climate returns all over from a few days come a few weeks later. This past week, a more troubling trouble arose: The car died three times while driving on the very same trip. Fortunately, every three arisen in a parking lot, and it hasn"t occurred since. One similarity was the both issues developed at low rpm. Any kind of thoughts? perform you know if there any type of related recalls?
Answer: If the "service engine soon" indicator come on at any kind of point, pull the diagnostic problem code(s) through a scan tool and also start there. If not, the best means of diagnosing any type of intermittent trouble is through duplicating the problem with devices attached, in this case a fuel-pressure gauge, a spark tester, and a scan device to check out all powertrain manage module data. Unfortunately, intermittent problems don"t constantly cooperate, and sometimes the occasions occur randomly with many time and mileage in between. That"s as soon as you want to analyze the common weak links.
You are watching: 2001 chevy suburban fuel pump problem
When handling a 2001 Chevy, that method you go right to the fuel pump. Short fuel push can reason a variety of driveability symptoms. One is the the engine turn off down and also won"t start. Another can be a turbulent idle, sometimes since of the fuel cook in the fuel rail just prior to it reaches the injectors. The higher the pressure, the higher the boiling point, and also vice versa. If you don"t have the equipment, acquire your van to a high quality shop with a fuel push gauge. Ask castle to check the fuel pressure. It have to be in ~ 55-62 psi with the engine running, and the vacuum line eliminated from the fuel-pressure regulator. It have to decrease 3-10 psi v the vacuum line reattached. There are two items you want to stress and anxiety at the shop. One is come be sure the fuel push regulator stop vacuum and that over there is no sign of fuel in the attached vacuum line. Both room indications that a cracked rubber vacuum diaphragm within the regulator.
The various other is kinking the fuel return hose and observing the boost in fuel pressure. While shutting off the fuel return path, you"ll see the pump"s best pressure. In this case, it have to shoot increase to around 80 psi or higher. If it doesn"t increase considerably -- even if it"s within organization manual specifications -- you"ve gained a weak pump that needs to it is in replaced.
How To with AlexIf you have a technological question concerning your pickup, SUV, or van, feel cost-free to contact Alex, a understand technician v the national Institute for Automotive service Excellence. Send a letter come him in treatment of Truck trend Garage, 831 S. Douglas Street, El Segundo, CA 90245, or e-mail us at trucktrend
sourceinterlink.com. Please encompass the VIN v your question. As result of the volume of inquiries received every month, us cannot guarantee that everyone"s question will be personally reply or will appear in the magazine.
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Can"t wait for aid with a difficulty you"re having actually with your Truck or SUV? ask the expert we trust below at Truck trend Garage -- visit Alex Steele in ~ www.RealWorldAutomotive.com.
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