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Car Forum / Ford / Ford Mustang / September 2006Help on troubleshooting ECM Code 96
Greetings! Looking for some advice on troubleshooting a code 96 on a 1989 Mustang GT 5.0 5-speed. Code 96 states that it is a fuel pump secondary circuit failure. the car seemingly runs fine ,except it does not seem to have as much power as it should. I just cleared up some EGR issues code 33 by replacing egr sensoreand vacuum actuator. The engine was rebuilt 5,000 miles ago, the fuel pump was replaced last summer, and no other issues exist that I am aware of. Any help would be appreciated! David My book, which only goes to 88 unfortunately, shows that code as not listed. It points to a manual test, called a pin point test, that requires you to troubleshoot the wiring harness starting at the throttle position sensor. Step 1 is to verify if you have good voltage to the sensor (VREF). You are looking for between 4 & 6 volts across the connector. After that they want you to look for damaged pins on the connector to the TPS and the sixty pin connector on the ECU itself. > Greetings! > [quoted text clipped - 11 lines] > > David
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