1999 Chevy Blazer Fuel Pump

Tiny
JSHELTON88
  • MEMBER
  • 1999 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 155,000 MILES
We recently purchased a 1999 Chevy Blazer 4 door and 2 weeks later the fuel pump went out. We replaced the pump and new tank. Now one week later the fuel pump is out again. IS there something that would cause the vehicle to burn up two pumps? Is there anything that we can do to prevent this on future replacements. Any help would be appreciated Cause I just dont know what else to try.
Friday, November 27th, 2009 AT 4:18 PM

1 Reply

Tiny
PEAR69
  • MECHANIC
  • 1,482 POSTS
The pump may not be burnt up at all. First, make sure you have voltage at the pump by testing the electrical connector at the pump. These connectors are nortorious for becoming loose and causing all types of connection problems. It is best to just replace these connectors. Then clean up the fuel pump ground connection located just before the fuel tank -- it is the black wire that terminates to the frame cross member and breaks out of the harness just before the fuel tank. If there is no voltage at the pump, check the fuel pump relay under the hood. If it is real hot - replace it. Next, be sure that you have proper oil pressure. If you do, the oil pressure sending (OPS) unit may be faulty. The OPS unit will shut off the fuel pump when it is faulty or when there is no oil pressure. It does this by breaking the circuit at the fuel pump relay. Check for control voltage at the relay.
Was this
answer
helpful?
Yes
No
Friday, November 27th, 2009 AT 8:38 PM

Please login or register to post a reply.

Related Fuel System Fuel Pump Replace/Remove Content

Fuel Pump Replacement
GUIDE
Fuel Pump Replacement
When a fuel pump goes out it can do so one of two ways either it can quit and stop working or it can fail intermittently causing the engine to stall or not start.
VIEW MORE