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EO4D Shudder or ??

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Old 08-30-2014, 09:35 PM
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Default EO4D Shudder or ??

92 F150 4x4 5.8 ltr, 101700 miles. 100% stock
Has the shudder when accelerating, classic like running over railroad tracks.
have replaced the fluid , level correct.
replaced the IAC and TPS.
When the TPS was disconnected truck had the hard shift, but shudder completely gone. Shifted up and down with no issues. Put in new TPS non adjustable, shudder returns.
Truck has been driven very little in last 18 months

Any ideas? Will it hurt to drive with the TPS, unplugged?
Old 08-30-2014, 09:36 PM
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when is the shudder occurring? between 45-55? idk if that has a lockup converter or not
Old 08-30-2014, 09:57 PM
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This truck is in Dutch Harbor Alaska, which has a 30 mph speed limit, the shudder appears to be when accelerating in 3rd gear at between 25 and 35 mph. Definitely shudders and I'm sure it is in 3rd, shifts great up an down, no slipping, reverse works great
We only have about 9 miles of roads so it doesn't really ever get up to a cruising speed, fuel filter was changed last week, has fresh gas in it.
Old 08-31-2014, 04:07 PM
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Originally Posted by Manila
Put in new TPS non adjustable, shudder returns.
The TPS is adjustable. You have to pivot it back and forth.

Also, what type of ATF are you using?



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