Check Engine Light and Sensors?
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From: SW Va
Wonder if it may be as simple as the wrong heat range spark plug????
Seems to me I remember Bob Ayers fixed the ping on his 3.0L, with a change in plug heat range, but I can't rememper the plug # he went too. I suppose a search of his posts on the subject of ping, or 30L plugs, might turn it up though.
So which plugs are in the engine now????
Seems to me I remember Bob Ayers fixed the ping on his 3.0L, with a change in plug heat range, but I can't rememper the plug # he went too. I suppose a search of his posts on the subject of ping, or 30L plugs, might turn it up though.
So which plugs are in the engine now????
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From: Aurora
Originally Posted by aquanaut20
A shot in the dark.
Have you considered that the head might be carboned, raising the compression ratio and hence instigating the ping.
Have you considered that the head might be carboned, raising the compression ratio and hence instigating the ping.
You might bring it in on that PCM warranty issue. Like some of the guys said earlier, you may have had the right coil all along from the factory instead of it being changed out for this issue. At least you'd find out if in fact the PCM was changed out under warranty.
Good luck
Fred
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I'm using bosch spark plugs, and before they were original motorcraft, and pinging was there too.
More seafoam??? Nonsense, with only 75k on the engine, I think the hesitation can be from some sensor not working properly, or the intake might have a leak
which I can't find, I might change the EGR valve, because is leaking vacuum through the center shaft, read my first post on this thread.
My 94, 2.3 L had the exact same problem from the first day I got it, and after years of replacing sensors, sparkplugs, nothing worked it was always pinging in hard acceleration and uphill, my biggest disappointment with these Rangers is the pinging thing, and I wasn't expecting to have pinging from a V6, 2000 model and 75k miles on it, I guess is about time for me to look for some other vehicle maker!
More seafoam??? Nonsense, with only 75k on the engine, I think the hesitation can be from some sensor not working properly, or the intake might have a leak
which I can't find, I might change the EGR valve, because is leaking vacuum through the center shaft, read my first post on this thread.
My 94, 2.3 L had the exact same problem from the first day I got it, and after years of replacing sensors, sparkplugs, nothing worked it was always pinging in hard acceleration and uphill, my biggest disappointment with these Rangers is the pinging thing, and I wasn't expecting to have pinging from a V6, 2000 model and 75k miles on it, I guess is about time for me to look for some other vehicle maker!
Cargo Master
Joined: Aug 2003
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From: BC Canada
IMO, these ford engines do not like BOSCH plugs, have tried a few sets, which broke down in 1000k, sent them to Bosch for testing, they advised me to use different plugs.
Get good service out of NGK Platinums and Motorcraft dbl plats
Get good service out of NGK Platinums and Motorcraft dbl plats
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Originally Posted by pawpaw
OK, so what was the Motorcraft plug number that was giving you problems???? Was it the OEM factory plug, or had they been replaced with another heat range????
I replace them with the BOSCH-PLATINUM_PLUS<!-- Quick Note --> <!-- Part Number --> 4005
If you guys believe that these are the wrong plugs, please show me proof?
I don't want to play the guessing game, replacing unessesary parts.
Thanks again........
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From: SW Va
Well Motorcraft lists several plugs for this engine.
I believe Bob Ayers changed his plugs from the Motorcraft AGSF22FM, to AGSF12FM to cure his 3.0L spark knock problems.
I can't speak to Bosch plugs in your engine, but enough folks on this forum have posted problems with them, that at the least they should be on your suspect short list imo.
Since you can't remember which Motorcraft plug was in this engine, were they the OEM factory plugs, delivered with the vehicle????
If so, how did they read when you removed them for replacement????
At this point I can only suggest you conider a colder plug & see how your spark knock problem goes.
Seeing as how you live in Calif. & have had spark knock problems on two of your Fords, it may also be a fuel recipe related problem too, so why not try several tanks of Chevron, CalTex, or Texaco & see what gives????
I believe Bob Ayers changed his plugs from the Motorcraft AGSF22FM, to AGSF12FM to cure his 3.0L spark knock problems.
I can't speak to Bosch plugs in your engine, but enough folks on this forum have posted problems with them, that at the least they should be on your suspect short list imo.
Since you can't remember which Motorcraft plug was in this engine, were they the OEM factory plugs, delivered with the vehicle????
If so, how did they read when you removed them for replacement????
At this point I can only suggest you conider a colder plug & see how your spark knock problem goes.
Seeing as how you live in Calif. & have had spark knock problems on two of your Fords, it may also be a fuel recipe related problem too, so why not try several tanks of Chevron, CalTex, or Texaco & see what gives????
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Originally Posted by pawpaw
Since you can't remember which Motorcraft plug was in this engine, were they the OEM factory plugs, delivered with the vehicle????
If so, how did they read when you removed them for replacement????
The gap was huge! I think the right gap suppose to be .042? and the ones I took out were .082!!!!
maybe they were originals?
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From: SW Va
I just pulled my 99 4.0L plugs at 50K & they too were WAY out of spec for gap. I had removed & regapped them to the tight side of spec at about 10K, so in about 40K the gap was really out of spec. No way would they have gone 100K without regapping.
So your having found your gap so out of spec, doesn't surprise me. they probably were the OEM factory plugs.
I'm more interested in knowing how the internal ceramic insulators looked on the plugs, as that could give us some clue on which way & how much to go, on a colder plug.
If they aren't thrown awat & you could lay hands on & discover what the number was on the Motorcraft plugs removed, that would be helpful too.
So your having found your gap so out of spec, doesn't surprise me. they probably were the OEM factory plugs.
I'm more interested in knowing how the internal ceramic insulators looked on the plugs, as that could give us some clue on which way & how much to go, on a colder plug.
If they aren't thrown awat & you could lay hands on & discover what the number was on the Motorcraft plugs removed, that would be helpful too.
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Originally Posted by pawpaw
I'm more interested in knowing how the internal ceramic insulators looked on the plugs, as that could give us some clue on which way & how much to go, on a colder plug.
If they aren't thrown awat & you could lay hands on & discover what the number was on the Motorcraft plugs removed, that would be helpful too.
If they aren't thrown awat & you could lay hands on & discover what the number was on the Motorcraft plugs removed, that would be helpful too.
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From: SW Va
OK, well it would seem the only thing common about all this is that you probably use the same fuel in both these vehicles.
So the only things I can suggest at this point is, try changing the fuel recipe , in the brands I suggested previously, for 5-6 tanks & see what happens.
If the 3.0L still pings & seeing as how you've tried a decarbon with Seafoam, consider trying a colder Motorcraft plug like Bob did & see what transpires.
Let us now what you find.
So the only things I can suggest at this point is, try changing the fuel recipe , in the brands I suggested previously, for 5-6 tanks & see what happens.
If the 3.0L still pings & seeing as how you've tried a decarbon with Seafoam, consider trying a colder Motorcraft plug like Bob did & see what transpires.
Let us now what you find.
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Originally Posted by pawpaw
OK, well it would seem the only thing common about all this is that you probably use the same fuel in both these vehicles.
So the only things I can suggest at this point is, try changing the fuel recipe , in the brands I suggested previously, for 5-6 tanks & see what happens.
If the 3.0L still pings & seeing as how you've tried a decarbon with Seafoam, consider trying a colder Motorcraft plug like Bob did & see what transpires.
Let us now what you find.
So the only things I can suggest at this point is, try changing the fuel recipe , in the brands I suggested previously, for 5-6 tanks & see what happens.
If the 3.0L still pings & seeing as how you've tried a decarbon with Seafoam, consider trying a colder Motorcraft plug like Bob did & see what transpires.
Let us now what you find.
What about other brands? Autolite,Champion,NGK,etc.?
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From: SW Va
I think most of your basic plug questions can be answered by poking around here. http://www.autolite.com/carcare/techSpecs.php