mikecon3
New Member
- Joined
- February 19, 2015
- Messages
- 6
- Reaction score
- 1
- City, State
- New Bern, NC
- Year, Model & Trim Level
- 1999 Ford Explorer
Hi all,
I have a 1999 Ford Explorer Limited, 4.0L 6 cylinder, automatic transmission with 142K miles. I've read through alot of posts on this subject, and have tried alot of different things, but I think I'm at the point I need some help.
The engine cranks fine, but just won't start. Here's where I'm at.
No codes.
Gas tank is full with new gas.
I can hear the fuel pump when I turn the key.
I have two keys, tried them both. No flashing alarm lights when I turn the key.
Check Engine light comes on when I turn the key on, goes off when I crank it.
Checked the fuel inertia switch, it was fine.
I replaced the fuel filter although I don't think it was bad. Fuel comes out the filter when the key is turned. Reconnected.
Checked all fuses, swapped the horn and fuel pump relay, horn still worked.
I've got spark at the plugs.
Sprayed starter fluid in the throttle body, didn't start.
No fuel at the schrader valve. Put the fuel pressure gage on and it read zero. Turn the key on several times, no pressure. Figured there was air in the line from changing the fuel filter. Jumpered pins 3 and 5 of the fuel pump relay to make it run continuously without running my battery down, and the pressure goes up to between 15-20 psi. As soon as it's turned off, the pressure goes back to zero. I've done this a dozen times, same outcome.
Tried starting it when I knew there was gas at the valve, still wouldn't start.
Everything I have read here would suggest the fuel pump is bad because of the low pressure and the pressure dropping to zero immediately after turning the key off. But I also thought that spraying the starting fluid into the throttle body would start it even if the pump was bad. So I'm not sure if I'm dealing with a bad pump AND some sort of electrical problem.
Any help would be appreciated. Thanks!
I have a 1999 Ford Explorer Limited, 4.0L 6 cylinder, automatic transmission with 142K miles. I've read through alot of posts on this subject, and have tried alot of different things, but I think I'm at the point I need some help.
The engine cranks fine, but just won't start. Here's where I'm at.
No codes.
Gas tank is full with new gas.
I can hear the fuel pump when I turn the key.
I have two keys, tried them both. No flashing alarm lights when I turn the key.
Check Engine light comes on when I turn the key on, goes off when I crank it.
Checked the fuel inertia switch, it was fine.
I replaced the fuel filter although I don't think it was bad. Fuel comes out the filter when the key is turned. Reconnected.
Checked all fuses, swapped the horn and fuel pump relay, horn still worked.
I've got spark at the plugs.
Sprayed starter fluid in the throttle body, didn't start.
No fuel at the schrader valve. Put the fuel pressure gage on and it read zero. Turn the key on several times, no pressure. Figured there was air in the line from changing the fuel filter. Jumpered pins 3 and 5 of the fuel pump relay to make it run continuously without running my battery down, and the pressure goes up to between 15-20 psi. As soon as it's turned off, the pressure goes back to zero. I've done this a dozen times, same outcome.
Tried starting it when I knew there was gas at the valve, still wouldn't start.
Everything I have read here would suggest the fuel pump is bad because of the low pressure and the pressure dropping to zero immediately after turning the key off. But I also thought that spraying the starting fluid into the throttle body would start it even if the pump was bad. So I'm not sure if I'm dealing with a bad pump AND some sort of electrical problem.
Any help would be appreciated. Thanks!