10+ failed ignition coils
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over heating problem solved!
Unfortunately it has taken this long to finally find a solution to the truck over heating and ignition coils going bad. Multiple Ford dealerships, Ford tech, and Ford motor corporation couldn't even figure it out,but i did,YIPPIE!!
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From: Isanti, MN
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overheating problem solved
The problem is under extened periods of higher boost it overheats because combustion gases are leaking into the coolant causing the coolant to become heat saturated. The heat causes the coils to start to fail. The biggest problem is FORD doesn't have the decency to stand behind there product! There product failed me and so did corporate ford!
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If combustion gasses are getting into the coolant it is because you have a failed head gasket.
that is easily diagnosed with litmus paper.
possibly this could happen at the turbo, but either way to prove your theory check your coolant for contamination.
I think you are barking up the wrong tree, but this is easily verified.
that is easily diagnosed with litmus paper.
possibly this could happen at the turbo, but either way to prove your theory check your coolant for contamination.
I think you are barking up the wrong tree, but this is easily verified.
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You are correct in that there is a test to see if combustions gases are in the engine coolant. The test did confirmed that there is. Under boost the cylinder pressure increase enough to s to force the combustion gases into the coolant. It could be because of a poor design,faulty head gasket,warped heads,etc. Over extended periods of higher boost the coolant becomes heat soaked extremely fast. The engine overheats causing the coils to fail. The thermostat, low speed and high speed fan all work as designed. Real time monitoring of the coolant temperature and boost also confirmed this.
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From: Sioux Falls Area
Ok then.
you a failed gasket or a warped head or both.
fix that and your problem goes away.
millions of these on the road being used hard every day and only one complaint about ignition coil after coil failing so I think we can rule out faulty design. My guess is that this is probably a head bolt issue where it is lifting the head under load. New gaskets and bolts probably fixes this. Keep running it the way it is and you will need a head or a block.
luck of the draw. Sometimes happens under warranty, usually it don’t.
you’ve found the problem. Now you know what to fix.
you a failed gasket or a warped head or both.
fix that and your problem goes away.
millions of these on the road being used hard every day and only one complaint about ignition coil after coil failing so I think we can rule out faulty design. My guess is that this is probably a head bolt issue where it is lifting the head under load. New gaskets and bolts probably fixes this. Keep running it the way it is and you will need a head or a block.
luck of the draw. Sometimes happens under warranty, usually it don’t.
you’ve found the problem. Now you know what to fix.
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After 4 years of multiple dealer attempts, after market over sized radiator, hours researching on the internet, drilled weep hole in inter cooler, over dozen of ignition coils, one set of after market coils, hours of vacation time lost, and no help from Ford, all on a $65,000.00 purchase. I would not make ay sense to drop $6000.00 dollars to do the repair it when there is no guarentee the problum wouldn't return. I put up with a lot because i liked everything else about the truck. It look good, handled nice, good creature features, plenty of power to tow. There read of others out there with the same issue. This issue started when it was under warranty. I was strong along until i was out of warranty and then told i was **** out of luck.
It was designed to fail. Either through the manufacturing process, the design, quality control or whatever. Ford should stand behind there products.Why, because its the right thing to do. Not because by some magical reason the laws are in there favor.Go figure
It was designed to fail. Either through the manufacturing process, the design, quality control or whatever. Ford should stand behind there products.Why, because its the right thing to do. Not because by some magical reason the laws are in there favor.Go figure
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From: Isanti, MN
Yup, I agree with Mike on this one.
I've never heard of an overheating engine killing the coil. That doesn't even pass the smell test, the coils are not liquid cooled. They are heated indirectly by contact with the head, but engines overheat all the time, and I've never heard of that causing a failed coil. Especially on this particular engine that has a proven track record for the most part. It's not uncommon for them to need spark plugs before the recommended interval, but coil failures are downright rare.
Your truck has no way of measuring coolant temperature direct. It doesn't have a sensor in the coolant loop, so the PCM uses a cylinder head temperature sensor to infer coolant temperature. This is advantageous because I coolant leak can expose a coolant temp sensor to air, which would fail to indicate an overheat condition. It also means the indicated coolant temp will rise faster than the actual temperature. Not saying your truck doesn't have issues, or that I wouldn't be frustrated in your shoes. But faulty engine design did not cause your coils to fail.
I've never heard of an overheating engine killing the coil. That doesn't even pass the smell test, the coils are not liquid cooled. They are heated indirectly by contact with the head, but engines overheat all the time, and I've never heard of that causing a failed coil. Especially on this particular engine that has a proven track record for the most part. It's not uncommon for them to need spark plugs before the recommended interval, but coil failures are downright rare.
Real time monitoring of the coolant temperature and boost also confirmed this.
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