It did and now it wont!!!!!!
#1
It did and now it wont!!!!!!
Soon here is the issue I'm facing. During the winter we were gonna have a really cold night so I took the truck down to fuel it up and put a bottle of heet In it, I drove around for about an hour to circulate the fluid. Parked it pt it on a trickle, so anyways, went out to fire it up this spring and nothing , I didnt the hear the fuel pump engage, so I changed it , and still nothing, please help, I don't think it's a fuse. And it started everytime with easy before now, sorry so long.. thanks for any help.
#2
The most important part in a no-start diagnosis is figuring out if it is a crank - no start or a no crank - no start.
A crank no start is when the starter motor engages and is able to rotate the engine, but it doesn't start.
A no crank no start is when the engine does not rotate when the key is turned.
In each of these conditions, the end result is the same but the diagnosis is different and the root cause will also be different.
Also, we need to know the model year, engine size, and drivetrain.
PS: Don't throw parts at something and expect it to be fixed. Expensive way out that wastes both time and precious dollars.
A crank no start is when the starter motor engages and is able to rotate the engine, but it doesn't start.
A no crank no start is when the engine does not rotate when the key is turned.
In each of these conditions, the end result is the same but the diagnosis is different and the root cause will also be different.
Also, we need to know the model year, engine size, and drivetrain.
PS: Don't throw parts at something and expect it to be fixed. Expensive way out that wastes both time and precious dollars.
#3
#4
RF Veteran
iTrader: (1)
There is a 30amp fuse in the engine fuse box that powers the fuel pump
There is also a Fuel Pump relay that passes that power to the fuel pump
In a 1991 it is UNDER the engine fuse box
Drawing here: http://www.justanswer.com/uploads/La...pump_relay.gif
Picture here: http://www.explorerforum.com/forums/...lay-jpg.35945/
The GREEN base is for the Fuel Pump Relay
When you turn on the key, the BROWN relay should "click" closed, that powers the GREEN relay and it should also "click" closed, BUT for 2 seconds only then click open
You can turn key on and off as much as needed to see if GREEN relay is working
IF you have the BLACK relay in the picture, it is for air conditioned only Rangers so you may or may not have it, but if you do have it you can use that relay in the Fuel Pump relay spot, they are the same relay part number
From the Fuel pump relay the power wire runs into the Cab's passenger side compartment, in the foot area just above carpet and below glove box you will find the Inertia switch
Looks like this: http://www.explorerforum.com/photopo...ut_off_WEB.jpg
These rarely fail, this switch is there to CUT FUEL PUMP POWER in an accident, to prevent fires, it has a weight inside and in a sudden stop or rollover the weight breaks electrical connection inside.
It has a Red reset button on the top that will be UP if it has been "tripped".
Once tripped and reset they need to be replaced because they will trip again easily, i.e. speed bump or just slamming the door hard
Fuel pump power
Battery Positive-----30amp fuse-------fuel pump relay-------------------inertia switch---------------------------------------Fuel pump-------------Ground
Fuel pump is an electric motor so does need a good Ground to run
There is also a Fuel Pump relay that passes that power to the fuel pump
In a 1991 it is UNDER the engine fuse box
Drawing here: http://www.justanswer.com/uploads/La...pump_relay.gif
Picture here: http://www.explorerforum.com/forums/...lay-jpg.35945/
The GREEN base is for the Fuel Pump Relay
When you turn on the key, the BROWN relay should "click" closed, that powers the GREEN relay and it should also "click" closed, BUT for 2 seconds only then click open
You can turn key on and off as much as needed to see if GREEN relay is working
IF you have the BLACK relay in the picture, it is for air conditioned only Rangers so you may or may not have it, but if you do have it you can use that relay in the Fuel Pump relay spot, they are the same relay part number
From the Fuel pump relay the power wire runs into the Cab's passenger side compartment, in the foot area just above carpet and below glove box you will find the Inertia switch
Looks like this: http://www.explorerforum.com/photopo...ut_off_WEB.jpg
These rarely fail, this switch is there to CUT FUEL PUMP POWER in an accident, to prevent fires, it has a weight inside and in a sudden stop or rollover the weight breaks electrical connection inside.
It has a Red reset button on the top that will be UP if it has been "tripped".
Once tripped and reset they need to be replaced because they will trip again easily, i.e. speed bump or just slamming the door hard
Fuel pump power
Battery Positive-----30amp fuse-------fuel pump relay-------------------inertia switch---------------------------------------Fuel pump-------------Ground
Fuel pump is an electric motor so does need a good Ground to run
Last edited by RonD; 05-28-2017 at 01:34 PM.
#5
#6
RF Veteran
iTrader: (1)
#9
91FR91XLT
Ok. Just want to pull this out of you know where. I had a problem with it cranking. Then starting. It was sounding like it was gagging to get fuel then it would die.
I popped a new fuel filter on. It started fine. My fuel pump is so quite I can't hear it prime. Even when standing outside and turning the key.
I know that sounds funny. It might work.
Question??? Does the spark plugs fire?
Trying to help
Ok. Just want to pull this out of you know where. I had a problem with it cranking. Then starting. It was sounding like it was gagging to get fuel then it would die.
I popped a new fuel filter on. It started fine. My fuel pump is so quite I can't hear it prime. Even when standing outside and turning the key.
I know that sounds funny. It might work.
Question??? Does the spark plugs fire?
Trying to help
#10
Ok. Just want to pull this out of you know where. I had a problem with it cranking. Then starting. It was sounding like it was gagging to get fuel then it would die.
I popped a new fuel filter on. It started fine. My fuel pump is so quite I can't hear it prime. Even when standing outside and turning the key.
I popped a new fuel filter on. It started fine. My fuel pump is so quite I can't hear it prime. Even when standing outside and turning the key.
#12
Ok. Just want to pull this out of you know where. I had a problem with it cranking. Then starting. It was sounding like it was gagging to get fuel then it would die.
I popped a new fuel filter on. It started fine. My fuel pump is so quite I can't hear it prime. Even when standing outside and turning the key.
I popped a new fuel filter on. It started fine. My fuel pump is so quite I can't hear it prime. Even when standing outside and turning the key.
Didn't want to upset you.
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