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What is it with these Explorers ?

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Old Nov 6, 2009 | 06:46 AM
  #1  
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blloyd
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From: Tulsa, Oklahoma
What is it with these Explorers ?

About 6 years ago, my daughter had a 1990 Bronco II 4X4 that was in very good shape and the only problem it had was cutting out at high RPMs around 65-70 but ran fine at lower RPMs !
I used Premium gas and Seafoam and seemed to help a little.
The vehicle was totaled before the problem was solved.

About 2 years ago she bought a 1997 Explorer sport 4X4 that did the same thing only worse it would start cutting out at lower RPMS also.
Once it was so bad I could barely get it to move, so I turned it off about 5 minutes,started it back up and it ran fine. (problem never resolved and vehicle is gone) I always ran 100% gas and put in Seafoam every time I filled it up !

She just bought a 1992 XPL Sport 4X4 and it seems to be doing the same thing the Bronco II was doing only not quite as noticeable.
I want to resolve this issue before it gets really bad !

Anybody have any answers, cause this has to be a problem in a lot of the Explorers!
 
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Old Nov 6, 2009 | 09:24 AM
  #2  
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mrshorty
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From: UT
I'd probably start with some basic diagnostics:

1) pull codes from the computer in case the computer sees the problem (this can be done with nothing more than a paper clip: put "ford eec-iv self test" into your favorite search engine).

2) Put a fuel pressure gauge on it and see what the fuel pressure is doing when it hesitates. If the pressure is dropping off, that suggests a problem with fuel delivery.

3) Check for vacuum leaks.

4) See about any tune-up items that might be due for replacement.
 
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Old Nov 6, 2009 | 12:28 PM
  #3  
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pbjohns
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From: Sac CA.
Not that the fuel pressure or other ideas arn't the way to go, but has anyone checked the gas station that the trucks are filling up at. 3 trucks all with the same type of problem, same location,???? . What about the exhaust system? Older trucks, bad Cat converter, I had a car that showed the same type of problems. Ended up going to Midas to find the problem. Just food for thought. Good luck
 
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Old Nov 6, 2009 | 08:11 PM
  #4  
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i would stop putting the seafoam in every time. your killing something. sensor, plugs,etc.
 
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Old Nov 6, 2009 | 08:12 PM
  #5  
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blloyd
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From: Tulsa, Oklahoma
Mr. Shorty,
I will have mechanic friend pull the codes Saturday and see what happens.

pbjohns, I have lived in the same house here for 20 years and have gotten my gasoline at a local Quiktrip which has good quality gasoline although it is 10% ethanol.
I have had many vehicles over those 20 years and the 3 Bronco/XPL are the only ones I have had problems with.
The 97 XPL was always filled with 100% gasoline at a local Sinclair and always kept a can of Seafoam in the tank.
The 92 also has no Cats at this time !

FYI my 1988 F-250 has similar problems!
Seems like all the fuel injected Fords are giving me fits.
 
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Old Nov 7, 2009 | 09:24 AM
  #6  
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blloyd
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From: Tulsa, Oklahoma
Steve,
I just saw your post this morning !
What is the deal with Seafoam ???
 
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Old Nov 7, 2009 | 01:05 PM
  #7  
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im not sure but is it basically naptha solvent. that might be effecting something. I have been using ethanol 10% for 20 years. RAn a 89 F250 with 5.8 for 250k miles. 2002 EXP has 110k, 2001 F150 has 200k. Never had 1 injector problem. Pressure regulator died on the 89 about 200k miles. Other than that i never put anything the in gas, just the 10% alcohol. Never had a fuel problem on a FORD.-----just a thought.
 
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