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1968-Present E-Series Van/Cutaway/Chassis Econolines. E150, E250, E350, E450 and E550

Cruise Control Problem

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Old Jul 10, 2019 | 08:56 AM
  #1  
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quickieR
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5th Wheeling
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From: Bells
Cruise Control Problem

1993 E150 351w E4OD runs fine and cruise works well except on some long hills it will drop as much as 10 mph before downshifting and going back to set speed. Thanks for any help.
 
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Old Jul 10, 2019 | 06:59 PM
  #2  
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98Econoline150
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From: Chicago
Make sure that the engine is tuned up and the transmission is in good condition maintenance-wise. Try the same thing without cruise control turned on. If the engine is in top shape and it continues to act up then look at the cruise control. You always want to start out with the basics.
 
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Old Jul 10, 2019 | 07:15 PM
  #3  
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quickieR
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5th Wheeling
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From: Bells
Engine and trans both fine. works well off cruise. only happens with cruise on long hills
 
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Old Jul 10, 2019 | 07:21 PM
  #4  
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98Econoline150
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From: Chicago
Hmm. Then I would check the servo for correct operation, check the throttle cable from the servo to the throttle body. Double check the kickdown if it is a linkage or a cable.
 
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