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2.9L & 3.0L V6 Tech General discussion of 2.9L and 3.0L V6 Ford Ranger engines.

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Old 03-30-2011
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2003 Fuel Problem

I have a 03 that has left me alongside the road twice in the past month. First time I had it towed to the shop only to have it start and run fine after arriving at shop. Second time it stopped running with exact same symptoms. Both times after the truck had been refueled. The second and latest time it would not start after arriving at shop. Mechanic check and no fuel pressure. He did something to the inertia switch, I think giggled the connector, and the truck started. Now he's had it for three days and is unable to duplicate the problem....truck's running fine. One more piece of information, both times the trucks stalled it was after being refueled (ran fine for miles after refueling), and wife was in passenger seat. I'm thinking she may have bumped the inertia switch connection???

Any suggestions on what could be the problem?

Last edited by rmvespa; 03-30-2011 at 08:10 AM. Reason: mispelling
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Old 03-30-2011
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go to the junk yard and get one swap it. could be just that. try it. i had my gf flip out on me for tryn to be funny and she kicked her feet and the truck shut down.
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Old 03-30-2011
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Originally Posted by rmvespa View Post
One more piece of information, both times the trucks stalled it was after being refueled (ran fine for miles after refueling), and wife was in passenger seat. I'm thinking she may have bumped the inertia switch connection???
Sometimes, an inertia switch can intermittently go open even if it doesn't fully trip. This can become more common as the miles accumulate.

Given the fact that the mechanic got it to start by messing with the IS and that there was a passenger present both times, the odds are that the problem is related to the switch.

First I'd check to be make sure that the connector is fully seated and snapped in. I had a Windstar go belly up and it was because the harness connector was only resting on top of the pins of the Inertia Switch. It ran like that, relying only on gravity, for over 30,000 miles from new before refusing to start.

If the connector seems OK, I'd try pounding a fist on the floor of the PS footwell with it idling to see if the engine dies. Even if nothing is found, I think I'd spring for a new one. As I recall, the switch is not that expensive and no one likes to be stranded.
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