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post #1 of 4 (permalink) Old 10-27-10, 08:04 PM Thread Starter
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91 f-350 no power

When im towing and i get ready to climb a hill and i step on the gas I HAVE NO POWER it feels like it is bogging down it will not kick down into passing gear. I then drop into second and there is no power. I have to drop in into low to get up the hill. But when i'm on flat ground and step on the gas it will kick down and i have power but ounce i get on a incline it starts to bog done . I took it into the shop and they said the fuel filter was DIRTY.They said the fuel pump was fine and they could not find anything wrong. I was wondering if it could be my injectors. I tow in alot of dirt roads. Thanks Troy

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post #2 of 4 (permalink) Old 10-27-10, 08:44 PM
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Re: 91 f-350 no power

Does it still do it after the filter change?

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post #3 of 4 (permalink) Old 10-28-10, 05:14 PM Thread Starter
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Re: 91 f-350 no power

Bert,
It still does it after a new filter. The truck runs as smooth as can be. I did put a k&n air filter system on it about six months ago. I even switched tanks thanking it might be my fuel pump same problem. If you where getting ready to climb a hill and step on the gas for a little more power you get nothing. it feels like it is bogging down. I do live in the country and i haul horses down dirt roads. Thanks bert
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post #4 of 4 (permalink) Old 10-28-10, 05:23 PM
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Re: 91 f-350 no power

It can be the MAP sensor or a vacuum problem. Try this and see what you come up with. Ford Fuel Injection » How To Run a Self-Test

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