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post #1 of 7 Old 02-04-2008, 08:52 PM Thread Starter
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surging? or what...

This has happened 2 times in the past week, I'm going slow with a little accelleration, probably 20-25 mph and the engine surges like I'm pushing on the accelerator, tap/surge tap/surge tap/surge.
Ever go over a bumpy road and your foot sort of bounces the pedal and you get that surge? That's what this is like, but I'm pretty sure I'm not tapping on it.
Odd.
Any ideas?
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post #2 of 7 Old 02-15-2008, 01:29 PM
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BUMP!

I noticed the same thing on my 99.5 7.3L it's just as I'm resting my foot on the peddle cruising behind someone... very slight, my first guess is a TPS type sensor but hopefully someone smart knows more
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post #3 of 7 Old 02-15-2008, 08:49 PM Thread Starter
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It's only happened once in the past week since I changed the fuel flter. That was pretty gunked up after only 8000 miles. I'm hoping that's all it was. I'll keep you posted.

What's the TPS sensor?

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post #4 of 7 Old 02-15-2008, 08:55 PM
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Throttle position sensor
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post #5 of 7 Old 02-15-2008, 08:57 PM Thread Starter
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Oh. A couple of questions about that then...
where's that located?
Can it be tested to see if it's good?
Is it expensive to replace?
Thanks!

99 F350 Crew Cab Long Box 4X4
234 k and counting!!
PHP Phoenix - 5 positions
Banks Bighead Wastegate
Banks 4" exhaust
DIY NAPA Intake Mod
HPX Crossover line
Marinco Mod
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post #6 of 7 Old 02-15-2008, 10:21 PM
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TPS's are pretty reliable, it's basically a reostat but they can get a worn spot in places where they are used alot for example at rest on the peddle at cruising speed. Which is why I kinda expected something along those lines, but these fords are drive by wire which is why I posted your thread up hoping someone might have seen this before.
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post #7 of 7 Old 02-15-2008, 10:25 PM Thread Starter
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Oh, drive by wire, sort of like my 94 GMC gasser. Still, wonder if there's a way to test the TPS?

99 F350 Crew Cab Long Box 4X4
234 k and counting!!
PHP Phoenix - 5 positions
Banks Bighead Wastegate
Banks 4" exhaust
DIY NAPA Intake Mod
HPX Crossover line
Marinco Mod
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