1994 Idle Issue | Ford Explorer Forums - Serious Explorations

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1994 Idle Issue

mgmgmg

Well-Known Member
Joined
October 14, 2004
Messages
417
Reaction score
9
City, State
Plymouth, MN
Year, Model & Trim Level
'94 LTD '10 LTD V8
Ok heres the deal..... I have a rough idle cold and warm. did a code scan no codes pulled up did a turn up last yr plugs fuel filter etc.... look for vaccum leaks found none. when i start my explorer it whats to surge at a stop light...the tach stays at 750. When i put in in neutral it doesnt want to surge that bad. but when i put it in drive it starts to surge. When the exp warms up it seems to not surge any more or have a rough idle.
 



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Clean the Idle Air Control, see how that works.
 












You can take them out and clean then with carb cleaner or electrical parts cleaner, my truck stalled frequently before I cleaned my IAC.
 






Replaced the DPFE problem solved......
 






fuel pressure regulator...sound like the symptoms mine had when it went out
 






Replaced the DPFE problem solved......
Because diagnosis is often most of the battle, would you care to describe how you determined the DPFE was at fault?
 






I replaced my fuel pressure regulator few yrs back....pulled the vent cap off found no gas.....

Pull codes

c= 336
 






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