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93 XLT Starts but stalls

n0c7

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April 3, 2006
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City, State
Edmonton, Alberta
Year, Model & Trim Level
1993 Ford Explorer XLT
1993 Ford Explorer XLT. Will start up without an issue but idles about 3000-4000rpm and I can hear a whining, then the RPM's drop and the engine stalls. I can start it up again no problem but it will continue to do the same thing. This is from a cold start. I can keep it running if I give some throttle when the RPM's drop but as soon as I don't it stalls. Any help appreciated.
 


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lofton316

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April 29, 2006
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City, State
Jersey
Year, Model & Trim Level
1991 Ford Explorer
1993 Ford Explorer XLT. Will start up without an issue but idles about 3000-4000rpm and I can hear a whining, then the RPM's drop and the engine stalls. I can start it up again no problem but it will continue to do the same thing. This is from a cold start. I can keep it running if I give some throttle when the RPM's drop but as soon as I don't it stalls. Any help appreciated.

fuel pressure problem?
 




AdvanceExpo

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Pineville, Louisiana
Year, Model & Trim Level
1991 XLT
Unplug the mass air flow meter and start it and see if that helps. If it does then you have a bad mass air flow meter.
 




n0c7

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1993 Ford Explorer XLT
It ended up being a vacuum leak. After a few starts it started idling really low in and up and down pattern. Sprayed around and found a cap missing and a loose hose side by side. Go figure. :) Quick and easy fix. Thanks for the tips.
 




BP_93explorer

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Bedford, Tx
Year, Model & Trim Level
1993 Sport 2wd (GONE)
I had a thread for this same problem about 2 weeks ago. I was told its fairly common so you may want to keep a few extra caps in the glove box.
 




n0c7

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1993 Ford Explorer XLT
I had a thread for this same problem about 2 weeks ago. I was told its fairly common so you may want to keep a few extra caps in the glove box.

Still kind of wondering where it went, as the fitting was pulling and not pushing.
 




BP_93explorer

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1993 Sport 2wd (GONE)
http://www.explorerforum.com/forums/showthread.php?t=187198

That was my thread. The engine is running the same as always. Here is what I think happened to mine and probably yours:
That leakage is very common with the 4.0 OHV V6. The slightest backfire(not loud), just a cough backwards through the intake, will blow off one or more of the vacuum plugs or hoses. I carried a few spare plugs in my 93 Explorer, it would do that at start up about once a month. I always was able to find the missing plug, except once. Good luck,
 




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