Engine Light ON...

[ice445]

I think they damaged something during the service. The #8 plug, while not hard to access, can easily be broken during removal. If ceramic shards fall into the cylinder, it can do massive damage.

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[XStang_2016]

So the latest in this saga...

Been waiting all week for the inspection and plan moving forward since the PO300/P308/P1289 on the weekend.

I've given them ALL the intel they currently have (thanks to you guys and this amazing group on the other side of the world) to progress fwd, and inspecting this week they've said that they thought the car freak out with the coolant temp/gauge fluctuation/car shutting down was to the battery voltage being low/unstable - the battery is new (4months). It was around 8-10v which was surprising.

They were going to remove the intake manifold to check cylinder head temperature resistance, temperature sensor and circuit.

I made them check the IMRC/CMCV as stated by you guys and now they're saying I was correct in the assumption (which they seemed hesitant to say with 100% certainty) and that it was the rod. Now the cost seems STEAP so far. Working through it currently.

MY QUESTION to you guys is - it's a 2016 GT. Warranty and Extended Warranty is out. Do I have a leg to stand on in regards to engine warranty with all this happening? The car has never touched a track, is not flogged. It's a daily.

Are there any legal tips/warranty intel that you could enlighten me on??

 

[Skye]

I continue to be concerned that, as they keep working on the car, more and more issues come to light. The battery now. A new battery, four months old. Maybe that was an issue before, but they didn't notice. Maybe it's yet another coincidence, but still...it bothers me.

I'm glad they found the rod in the intake system being stuck. Symptoms and issues have been confirmed by others here, we know it's broke and needs to be replaced.

I'm still processing, but something I would ask them to do: if at all possible, focus on, confirm, repair or replace one thing at a time. There's a lot to consider with the car, several issues which have been highlighted and some potential overlapping effects. Start simple, with the obvious and one thing, confirm the result was positive and move forward. The fixing of one item or issue could reveal something else or clarify a situation.

I can't speak to warranty or factory support. If any of these issues are involved in a recall, Technical Service Bulletin or something of the sort, that'd be sweet.

Thank You for the update.

 

[Shifting_Gears]

The NHTSA (National Highway Transportation Safety Administration) has a brief snip regarding the intake manifold issue. Not sure this will help outside of the US, but this is a well known issue that the dealership should be able to get further insight to. I don’t believe it was ever a recall, so I don’t know if there’s much to stand on regarding getting a dealer to help with rep

https://static.nhtsa.gov/odi/tsbs/2018/MC-10144221-9999.pdf

The intake is probably not related to the gauge issues you had. Newer vehicles seem to be really sensitive to voltage issues. When my battery died in my GT the dash did funny things as well, which were no longer an Issue after replacing the battery. I wouldn’t worry about that part too much. Batteries can be bad from the start.

 

[Skye]

FWIW, some additional thoughts...

Right now, you continue to be in recovery mode, looking for traction on a way forward. Projects like this, I often keep a separate notebook, a "brain" book. IDK necessarily where in the book the information is, but I know it's in that one place.

Heavily document anything and everything. Receipts, dates, e-mails, texts, photos, things said, thoughts, etc.

Commensurate with whatever relationship you have with this dealer, present your points at the appropriate moment. Explain why you expect the bill to be adjusted in your favor. You can use the brain book to specify what you expect $AU-wise to be removed from the final bill.

It's unfortunate you might have to remind them of the following: As a Ford dealer, the general expectation is, the customer pays for structured diagnostic time, parts and repairs. Customers cannot afford open-ended commitments. Part of the money spent is to secure access to a qualified and experienced technician that can follow Ford's troubleshooting processes and rely on Ford's assistance if needed.

If the dealer balks or resists, consider hitting the pause button and reaching out to Ford AU for a review of what all has happened.

 

[SheepDog]

Hey Guys,

2016 GT owner here from Australia here. Just wanted a more global advice on my issue currently.

About a month ago had a 90,000k service. Car had only done 81k. Car has come back out and the engine light has come on.
So I've sent it back into Ford. They struggled to find what the reason was. So they've changed all the spark plugs and re-timed. They went out tested, the light was off.

I had it back for a day, then the engine light has come back on. Sent it back in again.

They claimed the 8th cylinder was misfiring. They took the head off, inspected. I was asked what fuel I use. I said its had nothing other than premium 98 since I first bought it. They claimed the cylinder could have carbon build up, and to service it with the BG performance service - adding additives in the engine and fuel system. They dropped the oil again, re fitted filters etc Filled up with new fuel. They had the car for a week, tried to let it run through having the dealer principle (a mustang owner) drive the the car during the week to allow it to run through. The Engine light was off again at this stage.

I've had it back 4days. Engine light was off, with a quarter of that fuel left with the added additive left. Last night the engine light came back on.

They're claiming if it were to come back on, I'd have to do a deep clean of the engine/all cylinders with the heavy duty machinery, or send off parts to head office?

Has ANYONE had this issue in the states? I don't have an endless supply of funds to keep sending it back and forth without a precise plan of attack.
If so, what was your plan of action on your car and what did you do to fix the issue?

ANY HELP would be amazing!! Thanks guys I appreciate it!

Cheers!

Broken Swirl valve/IMRC shaft. Take the intake manifold off and see if the flappers are loose

 

[SheepDog]

These Ford "tech's" at your dealership obviously do not know what they are doing. I would like to see the flow chart that says, "Cylinder 8 misfire detected, -> replace spark plugs -> if problem persists -> remove cylinder head.

Make them put it back together, and take it somewhere else.

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