- Joined
- Jan 29, 2010
- Messages
- 2,287
- Reaction score
- 650
- Points
- 113
- Location
- Central Indiana
- Vehicle Year
- 2000
- Make / Model
- Ford
- Engine Size
- 3.0
- Transmission
- Manual
Truck: 2000 3.0 Flex Fuel with manual trans. Engine has a whipple supercharger/custom tune that have been working for a decade now.
Situation: I got in the truck after work the other day and it started up as normal. The wideband O2 display was showing a lean condition, so I let it idle for ~45 seconds and then it died. I cranked again and it started briefly but died within a few seconds. I could smell fuel when I popped the hood. I had FC p0122 (Throttle Position Sensor), and p0443 (EVAP Purge Valve). It cranks strongly but doesn't start.
What I've done so far:
Replaced cheap parts store TPS with Motorcraft part and cleared FC.
Replaced purge valve and cleared FC. Fuel smell seems to be reduced or maybe gone completely.
Confirmed engine has just over 50psi of fuel pressure at the rail when keyed on/engine off, and around 60psi while cranking.
Confirmed there's adequate fuel in the tank.
Can hear fuel pump (Walbro 450 e85 compatible pump) prime when key is on.
I have 3 PCM tunes (standard, 10% lean, and 10% rich) and the problem is the same for all three tunes.
Engine started once with starting fluid, but didn't stay running. Now it doesn't start even with starting fluid.
Any ideas for other things to check, or something that I may be overlooking? It's still in the parking lot at work, so I'm limited on what I can do. Is it time for a compression test?
Situation: I got in the truck after work the other day and it started up as normal. The wideband O2 display was showing a lean condition, so I let it idle for ~45 seconds and then it died. I cranked again and it started briefly but died within a few seconds. I could smell fuel when I popped the hood. I had FC p0122 (Throttle Position Sensor), and p0443 (EVAP Purge Valve). It cranks strongly but doesn't start.
What I've done so far:
Replaced cheap parts store TPS with Motorcraft part and cleared FC.
Replaced purge valve and cleared FC. Fuel smell seems to be reduced or maybe gone completely.
Confirmed engine has just over 50psi of fuel pressure at the rail when keyed on/engine off, and around 60psi while cranking.
Confirmed there's adequate fuel in the tank.
Can hear fuel pump (Walbro 450 e85 compatible pump) prime when key is on.
I have 3 PCM tunes (standard, 10% lean, and 10% rich) and the problem is the same for all three tunes.
Engine started once with starting fluid, but didn't stay running. Now it doesn't start even with starting fluid.
Any ideas for other things to check, or something that I may be overlooking? It's still in the parking lot at work, so I'm limited on what I can do. Is it time for a compression test?