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Possible Engine Ping?

sledgehammer1990

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October 26, 2008
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City, State
Doylestown, PA
Year, Model & Trim Level
'94 XLT
I have had an engine ping when I first bought my explorer back in May of 2008 and I cleaned off the MAS and it went away. The Ping is back again and I don't know what else I can do.

I spent my day off from work today doing a tune up on my explorer.

Oil Change - Mobile 5000
Oil Filter - FRAM Tough Guard
Air Filter
Spark Plugs
Wires - ProStart

I have 125,000 miles on it and I have no idea what could be causing the ping. It seems to only happen when I am heading up hill and hit 2,000 RPM or higher. More gas, the louder it is.
 



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boggs1227

Explorer Addict
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City, State
Flowery Branch , Georgia, 1994 sport 2wd auto
Year, Model & Trim Level
2005 colorado 2wd 5spd
check your intake manifold for loose bolts .mine was ping'ing really bad till i discovered mine were all finger loose .re-did them and no more ping .
 






rjcooperss396

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City, State
Dallas, GA
Year, Model & Trim Level
'95 XLT
Have you clean the MAF again? I use to have that problem with a '94 T-Bird that I use to have. I use to have to clean the MAF about every 6 months because it was really sensative. Another cause could be that the Cats are getting plugged. I had that happen on my Cobra when I first bought it.
 






sledgehammer1990

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City, State
Doylestown, PA
Year, Model & Trim Level
'94 XLT
I was just driving around today and the exhaust pipe snaped in half. I am at the shop now getting it welded. Could the timing be off?
 






doonze

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City, State
Fayetteville, Ar
Year, Model & Trim Level
'93 X Sport
I would say it's hard to get the timing off on these things, but I'll let someone who knows more about how the timing works on these 4.0L's chime in on that one.

In the mean time, I read your post while I was at work, went outside on a break and noticed this.....

P1040950.jpg



LOL, so I'm in your boat on this one, gonna have to get that fixed soon I guess ><
 






Masterd

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City, State
Upland, CA
Year, Model & Trim Level
1993 Explorer Sport
I would say it's hard to get the timing off on these things, but I'll let someone who knows more about how the timing works on these 4.0L's chime in on that one.

In the mean time, I read your post while I was at work, went outside on a break and noticed this.....

P1040950.jpg



LOL, so I'm in your boat on this one, gonna have to get that fixed soon I guess ><


I'm glad I dont live in a rust state. :p:
 






doonze

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City, State
Fayetteville, Ar
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'93 X Sport
I don't either! But the truck did most of it's life, Virgina in fact..... This tuck has more rust underneath and in the engine bay then steel anymore. ><, As time goes on I'm going to be fixing that! LOL
 






sledgehammer1990

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City, State
Doylestown, PA
Year, Model & Trim Level
'94 XLT
I was surprised really. I don't have much rust under mine at all.
 






nitro71

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Spokane WA
Good start on the maintenance there! Stop using the FRAM filters in the future, go with Napa Gold, Wix, Bosch, Mobil, Purolator or any other brand. Get that exhaust fixed. Fix any check engine light issues. Use 87 Octane gas. See if the pinging stops or is gone before digging in more. Fix anything you can find that is wrong first.
 






sledgehammer1990

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Joined
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City, State
Doylestown, PA
Year, Model & Trim Level
'94 XLT
Actually, I haven't heard the pinging in awhile. I am going to take the trailer I will be towing out on Tuesday and see if the pinging comes back.
 






HahnsB2

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City, State
Battle Ground WA
Year, Model & Trim Level
88 Bronco II
Have you been babying it? If you don't rev it out enough, carbon will build up and it will ping. My friend bought a 4.0 ranger that was driven by a grandpa, damn thing pinged like hell. We Seafoam'd it, the ping went away and it hasn't been back because he actually drives it.
 






sledgehammer1990

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Messages
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City, State
Doylestown, PA
Year, Model & Trim Level
'94 XLT
I definitely don't baby it. I am usually accelerate pretty hard. I have already sea foamed it too.
 






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