Question about 1991 Pontiac Trans Sport
We also replace the in line fuel filter and a new battery. Now the van still will not start. Can anyone help me find the relay fuse that is suppose to be under the hood.
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Posted on Jan 02, 2017
JUST RELEASE THE PRESSURE AT THE FUEL PRESSURE TEST PORT ON THE FUEL SUPPLY RAIL THAT SUPPLIES THE INJECTORS, IT IS A METAL VALVE LIKE A TIRE VALVE, THAT IS THE FACTORY RECOMMENDED METHOD..
Posted on Mar 11, 2009
install a fuel pump guage and check pressure at key on and start, it should hardly vary, it the pressure is constant check the injector signal with a noid light, while you are at it check spark(no spark no injector signal) you won't find a relay fuse
Posted on May 07, 2011
Tips for a great answer:
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Park the van on a flat, level surface. Ensure the parking brake is set.
Open the hood to locate the fuse panel. The fuse panel is located by the battery. Find the relay for the fuel pump and pull it out by hand.
Start the van and allow it to idle until it stalls out. This will depressurize the fuel system.
Locate the fuel filter under the van. The filter is located by the driver door mounted along the frame rail.
Disconnect the inlet fuel line with the quick-disconnect tool. This tool can be purchased at any automotive-parts stores. Place the tool over the connection and pull it toward the filter. This will release the fuel line from the filter. Repeat to release the line on the outlet end. Place a piece of masking tape over the inlet line to help remember which line is which. The inlet line is the line coming from the fuel tank into the filter. The outlet line is the line that runs to the engine from the filter.
Unbolt the filter from the bracket assembly. Slide the filter from the bracket.
Slide the new filter to the mounting bracket. Tighten the bracket with a socket wrench. Ensure the arrow is pointing toward the front of the van. The arrow designates the direction of the fuel flow.
Push the inlet line onto the filter. The line will lock in place. Ensure the tape is removed before installing. Connect the outlet line to the filter. It will lock in place also.
Insert the fuel pump relay back into the fuse panel. This will pressurize the fuel system.
Turn the ignition to the "start" position and allow the fuel pump to prime itself and push fuel through the lines. Attempt to start the van; it may not start right away. Once the van has started allow it to run for five minutes and observe for leaks.
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