2002 3.8 v6 mustang fuel problem - Ford Mustang Forum
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post #1 of 2 (permalink) Old 3 Weeks Ago Thread Starter
Dwmeeks's Avatar
Joined: Nov 2019
Posts: 1
2002 3.8 v6 mustang fuel problem

I have a 2002 mustang 3.8 v6 which uses too much gas. I get different milage on fill ups. I get 202 miles on a tank or 120 miles on a tank this time I only got 84 miles on 3/4 tank. I've changed the fuel pump, filter, plugs, wires, but can't figure out what the problem is. Anybody have any ideas of what would cause my gas milage problem?

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post #2 of 2 (permalink) Old 3 Weeks Ago
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Joined: Sep 2010
Location: Houston
Posts: 6,808
IF you are really serious about HOW to locate your problem then there are two major ways to fix this;
  • Part change until fixed
  • Get information about HOW the motor is running with tests and sensor values

IMO one of the best methods to get advanced information regarding HOW the motor is running is with an ODB2 scanner. Here's some information on an affordable $30 Windows based unit.

ForScan ODB2 scanner w ELM327 USB

It's quite possible this tool will pay for itself with the first repair.

Other wise it's time to load up the "parts cannon" and start changing out tune up related parts.
  • Spark plugs
  • spark plug wires
  • Front O2 sensors
  • clean MAF
  • Compression test
  • clean fuel injectors

2003 GT Convertible (sold & missed)
2000 GT coupe (Craigslist project. Fixed. Now my DD). Windsor to Romeo swap.
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