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Re: fuel pump has quit
Go spend $25 and purchase a Haynes Repair Manual from Auto Zone for your specific make and model. It is a wonderful tool that pays for itself over and over with detailed, step by step instructions with pictures on how to repair just about anything on your auto.
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If it cranks at normal speed, it could be the fuel pump or loss of spark. Autozone has a loan-a-tool policy. Pretty sure you can borrow or rent a fuel pressure gauge to see how good your pump and fuel filter is. Just hook it up to the test port on the engine's fuel rail, and turn the key to on, not start. It should immediately show about 40 pounds of pressure- 40 psi. If it is good, then it is probably an ignition problem, and you need to check for spark on a spark plug wire.
If the test shows no pressure, then the pump may be bad. It is not turning on, for sure. A final check before replacing the pump is to check that the pump power wire at the fuel tank connector has power on it with the engine cranking over. If it has power there when cranking, the pump circuit is good (all fuses and relays good). The fuel pump itself is the problem.
On that model jeep, if it is a Cherokee Sport like my son's '95 jeep, it is quite easy to change out a fuel pump. You don't have to drop the gas tank to replace the pump. The assembly goes into the gas tank at the front upper part of the tank, above and just back of the rear differential. I changed out the fuel pump on his jeep in a K-mart parking lot in a little under 2 hours. Wiggling and twisting the assembly out of the gas tank hole for removal was the most time consuming part. It was really quite easy. If you have ever replaced a pump before, .the jeep is a breeze.
`Probably the fuel pump in the tank has stopped working. Verify with a check for power at the gas tank connector: When the engine is cranking, the fuel pump wire should have power on it-use a test light or voltmeter. If the wire has power, but pump will not turn on, the gas tank will have to be removed to replace the pump. Just by turning the key to on, not start, will or should cause the fuel pump to come on for about 2 seconds to pressurize the fuel lines and put gas under pressure against the fuel injectors. If you don't hear the pump buzz on for a brief time, you know you need to check the fuel pump circuit. Check fuse, check fuel pump relay...but the easiest way to verify a bad pump is to check fuel pressure, or check for power at the gas tank when the engine is cranking. No power is a fault in the circuit (fuse, relay, wiring), power available to the pump but no pump means the pump will have to be replaced .
the fuel pump is located inside the gas tank. under the hood in black box[main fuse and relay panel] before you replace the pump, i suggest that you check fuel pump relay. or have you been hit from rear? you may need to reset the fuel pump shut off switch. you will find the reset switch in rear of car, look for a pop out panel on the left hand side when you open the trunk. push the switch in [like a reset switch for old t.v. push it in and then try to start the car before you replace the fuel pump please! but if you know for sure that the fuel pumps bad, drain all the gas out before dropping the gas tank. this will save you alot of trouble. also disconnect the positive cable from battery before you do anything!!!!!! hope this helps, merry christmas. and as always,if you need further assistance, please repost your question and an expert will be happy to assist.
The pump is in the tank. Before you consider dropping the tank. Lift the carpet in the back seat above the tank. The older MPVs had a trap door which would access the pump with out dropping the tank. It is definitely worth a look. I changed mine in half an hour.
on 2000 malibu,the fuel pump is in the tank it will take you as long as it takes to drop tank! fuel pump is on top of tank,before starting remove fuel pressure by removing fuel pump fuse and run until it quits.it will take approx. 2-3hours to do a decent job. exhaust pipe is not on top it is on the left of the tank.
Fuel Pump RelayNotes If you remove the Glove box door & Box it is Just Above the Glove box hidden behind the dash. There is another one in relay Box BUT it is Wired into ECM this is NOT the one need trust me.
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
relieve fuel pressure (pull fuel pump fuse run car until it quits,) siphon fuel from tank, drop tank, remove wires and hoses,fuel pump is in tank, to remove, use snap ring pliers to remove pump retaining ring, pull up on pump, be carefull not to damage screen or sending unit in tank when pulling out.