The fuel relay went bad but did not know that was problem I kept trying to start it and now for the last 6 months the fuel pump makes loud noise and the car sometimes hesitates, question what are the steps to replace fuel pump? it is inside the tank
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Re: 1996 chevy suburban maybe fuel pump problems
Yes it's in the fuel tank....................Drop the tank and the rest is easy.
Getting the Gas out before dropping the tank can prove to be a pain
but after that is done the rest is easy.(best to run it a empty as possible) Two straps hang the tank.
Remove the strap bolts and the tank will come undone. Remove the filler
hoses, disconnect the power leads and the fuel lines and the tank is
free. The pump comes out by twisting a ring.then remove the pump and replace then reverse the earlier steps to reinstall
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A fuse will blow for 2 reasons .
1) If the device has a Short in the circuit that runs through this fuse.
2) If the device draws more amperage from the power source through the fuse than the fuse will handle.
ex. if a fuel pump or starter has a 20 amp fuse and the starter/fuel pump is going bad and draws 30 amps
it will blow the fuse.
A fuel pump on a 1996 vehicle is located in the fuel tank and is kept cool by the surrounding gas and the gas
that flows through it. Overheating a fuel pump is virtually impossible.
That being said there is a High probability that replacing the fuel pump and relay will fix this problem.
It is quite common for this to occur in the GM vehicle of 1996. When the pump starts to fail, it draws an
excessive amount of amperage and would blow the fuse. Hope you find this information useful.
When you replaced the fuel pump, did you notice if the pick-up line was in good condition or not? I have been told by a mechanic that has over 35 yearsof experience that this was a common problem, and especially now with Ethanol being mixed in with fuel.
Listen at the back by the fuel tank for a 1 to 2 second prime cycle whirr from the tank when turning the key to run position after it has been off for at least 10 seconds. No noise means no running pump. ....and no noise means..... Most likely it will need a new fuel pump....80% Fuel pump relay 10% Fuse or bad wiring 10%
The quick fix to get home is to crank the truck to create oil pressure to fire the pump......and while cranking WHACK the tank hard with a 2by4 or something like that....to jar the pump..... and it may start running long enough to get it somewhere to be repaired. This works 60% of the time on a dead pump.
If you do hear a whirrr.....you most likely need a ignition module or crank or dist pickup.
Check fuel flter at fuel pick-up intank (looks like a small wire sock). Remove fuel filter and fitting at fuel rail. Blow out fuel lines w/about 35lbs air press. Ck electrical @ relay - should be 4 connectors - one is key on hot/one is always hot/one is ground and last is hot to fuel pump. Good Luck
I assume the fuel pump fuse is good?
The only time voltage will be sent to the fuel pump will be the first 2 to 3 seconds if the starter is not engaged. You will want to crank the engine over and check for voltage on the load side of the relay, circuit #30 at the relay.
Let me know after you check.