Misfire on Cyl 1

[Rp930]

Plenty of coils/spark plugs have gone bad with no water intrusion. It can happen and based on your first information and fault code is more logical than a head gasket. OBDII is designed to monitor emissions/emission components. A misfire under load causing the light to flash is exactly what it should do. Less load and the light went out. A head gasket failure would not likely be load dependent. We‘ll see what the technician finds. He has it in front of him.

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[GTGallop]

Post a picture of your coolant level, sir.

It's in the shop.
Powertrain warranty does not cover coils.

So by the time I get out of there I'm in for $477.39 for a spark plug coil.
Then $265.91 for a spark plug (that had better be all 4 of them).
And they want to do a Fuel Injection Induction cleaning $347.95 <== I might skip.

Currently waiting to call them and figure out what the root cause of the failure was. Because I'm not dropping $713.30 to $1061.25 without some good goddamn intel to go with it.

 

[GTGallop]

Plenty of coils/spark plugs have gone bad with no water intrusion. It can happen and based on your first information and fault code is more logical than a head gasket. OBDII is designed to monitor emissions/emission components. A misfire under load causing the light to flash is exactly what it should do. Less load and the light went out. A head gasket failure would not likely be load dependent. We‘ll see what the technician finds. He has it in front of him.

You are probably right.
I still need / want to know what caused the failure. Seems unlikely to me (and maybe I'm flat out wrong) that a coil pack would fail at 38800 miles.

BTW - is Cylinder 1 the front or the back? I have been told both.

 

[NotBudule]

You are probably right.
I still need / want to know what caused the failure. Seems unlikely to me (and maybe I'm flat out wrong) that a coil pack would fail at 38800 miles.

BTW - is Cylinder 1 the front or the back? I have been told both.

Ole #1 used to be up front back in the day , doubt that has changed ... coil packs should last FAR beyond that , and Ford should help on that imo , dosent hurt to ask , Cadillac used to "split" it with customers all the time on stuff like this , or cover the labor at least ...

 

[dtech]

they can fail but even on amazon a 4 pack is $180 , single $67 , that's an expensive coil. as stated 1 should be at the front of your auto. they can sometimes be resistance tested with a simple multimeter , but can be tricky as sometimes the fine secondary windings will test good then with heat short out. But probably the part was defective in the 1st place.

 

[NotBudule]

If you do call Ford , be nice and heaps of praise on the INCREDIBLE JOB they did on said Ranger and how awesome it is , and has been in every way , ? ? , then some slight disappointment in the early failure on a garage kept babied vehicle , maybe name drop the forum here and what a big f'n deal it is and the fury , hell and damnation it can bring when we feel a Ranger owner has been wronged , but be nice ? ...
DO NOT TELL THEM IF YOU HAVE A DAMPER ! They hate those things at Big Blue and will instantly hang up ...

 

[Rp930]

You are probably right.
I still need / want to know what caused the failure. Seems unlikely to me (and maybe I'm flat out wrong) that a coil pack would fail at 38800 miles.

BTW - is Cylinder 1 the front or the back? I have been told both.

#1 is in front. Components fail. Sometimes there is no visible reason. It happens. Lots of manufacturers including high end manufacturers have had coil over plug failures.

An ignition coil should be covered under 8/80 emissions warranty if you fall under that.

 

[dtech]

If you do call Ford , be nice and heaps of praise on the INCREDIBLE JOB they did on said Ranger and how awesome it is , and has been in every way , ? ? , then some slight disappointment in the early failure on a garage kept babied vehicle , maybe name drop the forum here and what a big f'n deal it is and the fury , hell and damnation it can bring when we feel a Ranger owner has been wronged , but be nice ? ...
DO NOT TELL THEM IF YOU HAVE A DAMPER ! They hate those things at Big Blue and will instantly hang up ...

yeah and don't suggest that their pricing is outrageous for replacing a part that likely costs them no more than $60 and to add insult to injury they tack on a likewise inflated spark plug replacement cost when the plug most likely could have been cleaned . I was thinking of giving up wrenching but posts like this tell me to stay the course and keep the fingernails dirty.

BTW - some VW owners may chime in here as IIRC VW for a while went thru a lot of defective coils and maybe they were replaced free of charge.

 

[GTGallop]

Whats the consensus on the Fuel Injection Induction cleaning and top end decarbonization that they "reccomend" every 25,000 miles for $347.95. Skip? Do?

 

[dtech]

I wouldn't go for that, esp if you use top tier gas. I would as notbudule advised contact Ford and see if you can get some relief on that failed coil - unless defective it really shouldn't have failed at relatively low miles, use VW as an example of the maker stepping up, but their failures were massive and indisputably defective .

 

[airline tech]

I don't like fuel induction cleaning, unless it is a need for a rough idle, the tool/cannister is expensive. So, I made my own years ago out of PVC Pipe and use a 50/50 mix of fuel and seafoam.
You have to have a compressor for it to work, disable fuel pump and dial down regulator on compressor to 45-50 PSI (Varies on Engine Specs) start and idle engine using the 50/50 mix as the fuel, the engine is running via the 45-50 PSI simulating the fuel pump pressure.
The reason I don't like doing it as preventive as the cleaner can sometimes damage the injector itself, I use it as a last-ditch attempt to correct a rough idle engine vs replacing a buried under the intake plenum injector.
I will say it does help, if the injector is just dirty or sticking and leaking but most of the time the injector has failed electrically.

 

[SilverSlugger]

Whats the consensus on the Fuel Injection Induction cleaning and top end decarbonization that they "reccomend" every 25,000 miles for $347.95. Skip? Do?

I would skip. Most likely is just a can of Seafoam for 12$ and there going to spray it into the air intake.

 

[Dr_Strangelove]

Curious to see the outcome of this one. I've been biting my lip because if this were a Volkswagen I'd say you were on the money with the HC gasket diagnosis. This sounds exactly like the failure I've had on a couple of VW EA engines, only those generally miss around 3,200 RPM. Apples to oranges, anyway.

 

[dtech]

Curious to see the outcome of this one. I've been biting my lip because if this were a Volkswagen I'd say you were on the money with the HC gasket diagnosis. This sounds exactly like the failure I've had on a couple of VW EA engines, only those generally miss around 3,200 RPM. Apples to oranges, anyway.

Luckily for poster it's probably a correct diagnosis - those coils are in essence small transformers with very thin secondary wires - can be thousands of winds , they can short from thin insulation worn away and produce a weaker spark which creates a misfire when you have raised cylinder compression - like under boost. But to me the cost from the dealer is excessive. I know some folks who keep a new coil on hand to swap in when they encounter misfires , but IMO this poster is a victim of poor quality componentry. .

As a former Saab owner for their T7 engine mgmt they used a capacitive discharge coil pack which was failure prone so many owners including I kept a spare in the trunk, they would usually fail between 50k and 100k but they cost for the entire unit was often under $200, it produced one hell of a powerful spark but reliability wasn't it's strong suit.

 

[Wytchdctr]

Headgasket failure on number 1? I'd be more concerned if it was 2 or 3 misfiring and coolant vanishing. I'd say it's a coil/plug issue.

And skip the cleaning. I'm super happy to see the results of our intake valves not being super crap at 50k with the awesome same size of one engine being scoped. Still.. I'll deal with that at 100k.

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