Question about Oldsmobile 88
Sounds like a problem with the fuel pump components in the fuel tank.
Especially look at the small rubber hose that connects the pump to the
pickup tube for being loose and sucking air. The fuel pumps are well noted to start to fail around 40,000 miles.
About this, just need to be extremly careful as the replacement pumps usually come with new electrical connectors and must be utilized for installation on the new pumps as the old connectors tend to not fit correctly and can become loose thus causing erratic pump operation. GM has a lousy reputation on their fuel pumps as it is the gas in the tank that is used to keep the pump from overheating due to the high speed operation of the pump and I have seen numerous pumps fail when the fuel level gets below 1/8 tank of fuel.
Remember that intermittent faults are very diffcult to diagnose, but testitng one to one devices could be good results. Also, could be vacuum leak or vacuum hoses in wrong places. Scanned the ECU, some fault code stored there maybe.
Keep us updated.
Posted on Apr 06, 2011
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Posted on Jan 02, 2017
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