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Diagnosing fuel delivery failure 700 1990

posted by  Fixquest on  Thu Jul 5 14:29 CST 2018
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last visit: Tue Jan 15 21:28 CST 2013
[RELATED]

1990 Volvo 740 GL wagon. 169,000 miles. Car was running smoothly with no loss of power. I put in gasoline at the usual gas station. Drove less than two miles home. The following morning, the engine turned over but died. Repeated the effort at intervals. Nothing. Car towed. The car is never run on low fuel. I have owned the car for 8 years. Sole driver.

To me, when the engine turned over, there was a sound akin to a vacuum - air sound.

Mechanic said that fuses were checked, and that fuel pressure was checked, and said that the in-tank fuel pump should be replaced. This was done. No other part was replaced. The fuel gauge ceased to function.

Four days later, driving a short distance, the engine stuttered, but kept running.

Obviously? I think the in-tank pump was fine; that the fuel filter should have been replaced first, and definitely along with the in-tank fuel pump; and the screen. If I could have the old fuel pump checked to see if it had failed, I would.

Other than the "find a mechanic you can trust," reply -

Question: How would you have proceeded with the diagnostics and repair.

Thank you.





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