I’m stumped

Have a 2005 ford ranger V6 3.0L XLT manual transmission.

On the initial start up of the day when it’s been sitting and cold out, it will start and then die. Sometimes it’ll try to stay running but ultimately dies again. After doing this 5-6 times, eventually it starts up fine and runs no problems at all, drives great.

I’ve replaced IAC valve, both engine coolant temp sensors, thermostat, spark plugs and wires, I’ve replaced the fuel filter as well as well as the exhaust system (which I know isn’t the issue, it was just leaky).

I’m putting in a MAF tomorrow because I read it’s integrated with the IAT sensor. I also have to switch out the O2 sensors which the downstream one is really on there so it’s been a process.

If neither the O2 sensors or MAF fix this issue, what else could I possibly look for? Fuel pump? Fuel injectors? TPS? I hear them all engaging just fine on startup. But any advice would be gladly appreciated.

Posted Apr 8, 2026, 2:43 AM UTC

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