Hi everybody,
I've had this truck for about 12 or 13 years and it's never let me down until now.
I got it when it had done 30,000 miles and it's only done 99,000 now.
I got in it one morning and it refused to start, with no warning signs the day before.
It doesn't make any attempt to fire on any cylinder.
So I checked the fuel line, that was OK, fuel was getting to the pump.
I changed the fuel filter and checked for water.
I changed the Fuel filter holder with the button primer as I'd read somewhere that the membrane inside could rupture.
I changed the Air filter just in case, but it made no difference.
I took the Air intake apart and I spayed in some QuikStart and it burst into life at that point, so I know the engine itself is OK.
I'm thinking it might be a problem with the fuel cut-off solenoid or a transistor burnt out in the circuit of the fuel pump, so I wanted to check that power was getting to the pump first. This where I'm confused..........
I have a test probe with a bulb in it and a lead that will connect to the battery earth pole.
There is a big female socket on the rear end of the pump which I assume is the power supply to it.
I disconnected it, turned on the ignition key to running mode, put the probe in to the top-left connector,
and the probe light started flickering and the was a noise that sounded like a solenoid rapidly operating on and off that didn't appear to be coming from the pump;
It's difficult to describe it but it;s kinda like 'Brrrrrrrrrrrrrrrr'!
This was not the result I was expecting!
There are 6 connectors inside this plug and 4 of them react the same way (the other 2 didn't do anything)
can anyone tell me whats going on here?
Thanks.
I've had this truck for about 12 or 13 years and it's never let me down until now.
I got it when it had done 30,000 miles and it's only done 99,000 now.
I got in it one morning and it refused to start, with no warning signs the day before.
It doesn't make any attempt to fire on any cylinder.
So I checked the fuel line, that was OK, fuel was getting to the pump.
I changed the fuel filter and checked for water.
I changed the Fuel filter holder with the button primer as I'd read somewhere that the membrane inside could rupture.
I changed the Air filter just in case, but it made no difference.
I took the Air intake apart and I spayed in some QuikStart and it burst into life at that point, so I know the engine itself is OK.
I'm thinking it might be a problem with the fuel cut-off solenoid or a transistor burnt out in the circuit of the fuel pump, so I wanted to check that power was getting to the pump first. This where I'm confused..........
I have a test probe with a bulb in it and a lead that will connect to the battery earth pole.
There is a big female socket on the rear end of the pump which I assume is the power supply to it.
I disconnected it, turned on the ignition key to running mode, put the probe in to the top-left connector,
and the probe light started flickering and the was a noise that sounded like a solenoid rapidly operating on and off that didn't appear to be coming from the pump;
It's difficult to describe it but it;s kinda like 'Brrrrrrrrrrrrrrrr'!
This was not the result I was expecting!
There are 6 connectors inside this plug and 4 of them react the same way (the other 2 didn't do anything)
can anyone tell me whats going on here?
Thanks.