1994 Explorer Surges when warm

Tiny
WOLFIE
  • MEMBER
  • 1994 ALL OTHER MAKES ALL OTHER MODELS
1994 Explorer XLT, 4wd, 160,000 miles, When warm the truck surges when under load, once cruising it's fine, but when accelerating, especially between 20-35mph. Fuel pump is 6 months old, fuel pressure regulator, fuel filter and EGR valve are new. Only code that comes up has to do with EGR valve, I checked all hoses and EGR components and they all seem OK. Running fuel pressure is 31psi, loses pressure quickly when engine turned off. What I get from the repair book is possible injector leaking, but don't want to tear apart unless I know. I have read other questions in this forum about similiar problems with other makes of cars and the MAF sensor keeps coming up. Any ideas?
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Thursday, December 28th, 2006 AT 8:41 AM

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Tiny
WOLFIE
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I meant truck LOPES not surges, sorry.
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Friday, December 29th, 2006 AT 2:07 PM

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