SpyTom
Member
- Joined
- March 26, 2024
- Messages
- 10
- Reaction score
- 1
- City, State
- Killeen, TX
- Year, Model & Trim Level
- 2002 Explorer XLT
Hello All,
I have a 2002 Explorer XLT 4WD, 4.0 gas engine. A week ago I went to start it to take it for inspection and it wouldn't start. I had been sitting for a couple of months and I hit it with some starting fluid and it started and ran fine for 10 minutes. Shut it off, went inside and came back out and it not only wouldn't start, it wouldn't even turn the starter.
Fast forward a few days, had a locksmith come out and check the key (I only had one) and see if the chip went bad, but he said the chips rarely do, but that he couldn't load the key so he felt the computer was bad. Ordered a computer with 2 keys, but keys still aren't recognized. Replaced the pickup coil around the ignition, and now cranks, but won't still start. Checked battery, fuses, relay, collision impact cutoff switch, etc. and are all good. Can't hear the fuel pump running, so I jumped the fuel pump relay, still no joy. I am thinking the fuel pump went bad which is weird? Checked for fuel pressure, zip!
Here's the strange part, the fuel tank is full, but the gauge shows empty. Also, the horn stopped working as well. I pulled the clock spring and tested it, and the horn circuit tests fine through it.
In my mind, the fuel pump and the fuel gauge stopping at the same time make me think there's a connection, but since it's literally impossible to find the correct schematics for this vehicle, I'm left with an educated guess. Does the fuel gauge need power or is it just a resistive circuit? Either way, it's possible it's a wiring issue since they are both in the same unit and I am guessing the same wiring harness/connectors?
Also, my explorer is a 2002, but was built in August 2001, and I went searching for the horn relay, but that socket is empty and there's no terminals in it either, so it looks like it never had a relay. The horns work when I use the remote to lock the vehicle, so I know it's not the horns which it has 2.
I tried grounding the horn wire connector under the dash after tracing it through the clock spring and the horns still won't work. The fact that I can't find the correct wiring schematic isn't helping here as the horn circuit must be integrated into some other component, possibly the PATS? I'm a electronics tech and I can read schematics and use a meter, but without the correct diagrams, I'm just guessing.
Can anyone suggest any ideas? I've check every fuse in the vehicle and cannot solve this. My next step is to pull the gas tank, but doing that on the ground isn't my idea of a fun day.
Also, if anyone can point me to the correct wiring schematic for this vehicle, I would greatly appreciate it!
Thanks in advance!
I have a 2002 Explorer XLT 4WD, 4.0 gas engine. A week ago I went to start it to take it for inspection and it wouldn't start. I had been sitting for a couple of months and I hit it with some starting fluid and it started and ran fine for 10 minutes. Shut it off, went inside and came back out and it not only wouldn't start, it wouldn't even turn the starter.
Fast forward a few days, had a locksmith come out and check the key (I only had one) and see if the chip went bad, but he said the chips rarely do, but that he couldn't load the key so he felt the computer was bad. Ordered a computer with 2 keys, but keys still aren't recognized. Replaced the pickup coil around the ignition, and now cranks, but won't still start. Checked battery, fuses, relay, collision impact cutoff switch, etc. and are all good. Can't hear the fuel pump running, so I jumped the fuel pump relay, still no joy. I am thinking the fuel pump went bad which is weird? Checked for fuel pressure, zip!
Here's the strange part, the fuel tank is full, but the gauge shows empty. Also, the horn stopped working as well. I pulled the clock spring and tested it, and the horn circuit tests fine through it.
In my mind, the fuel pump and the fuel gauge stopping at the same time make me think there's a connection, but since it's literally impossible to find the correct schematics for this vehicle, I'm left with an educated guess. Does the fuel gauge need power or is it just a resistive circuit? Either way, it's possible it's a wiring issue since they are both in the same unit and I am guessing the same wiring harness/connectors?
Also, my explorer is a 2002, but was built in August 2001, and I went searching for the horn relay, but that socket is empty and there's no terminals in it either, so it looks like it never had a relay. The horns work when I use the remote to lock the vehicle, so I know it's not the horns which it has 2.
I tried grounding the horn wire connector under the dash after tracing it through the clock spring and the horns still won't work. The fact that I can't find the correct wiring schematic isn't helping here as the horn circuit must be integrated into some other component, possibly the PATS? I'm a electronics tech and I can read schematics and use a meter, but without the correct diagrams, I'm just guessing.
Can anyone suggest any ideas? I've check every fuse in the vehicle and cannot solve this. My next step is to pull the gas tank, but doing that on the ground isn't my idea of a fun day.
Also, if anyone can point me to the correct wiring schematic for this vehicle, I would greatly appreciate it!
Thanks in advance!
