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Discussion Starter · #1 ·
So long story short!

My car has been acting weirdly on idle since last week. Rpm would ''wiggle'' from 300 rpm to 1500 rpm.
I had my car sent to a ford dealer last friday and the dealer came up with P0087 and the misfire codes 300/302/303.

So they replaced the high fuel pressure pump, like the code P0087 suggest! Hurray! Quick fix!

Well No! The focus said fawk off bruh!

The problem still persist, even with the new pump the car is still acting up on idle and it will stall while running on low RPM or on a stop (the car didn't stall before they replaced the pump)
Also I live in Quebec, Canada (I know ****in frenchies... omelette du fromage! hon! hon! hon! poutine, okay we get it I vape?!?!)
and we're on a holiday (Saint-Jean-Batiste) Vive le Quebec libre?!!!

So naturally, I couldn't get service today nor can I rent a car until sunday so good bye week end plans!!!

My car is still completly stock, well I have a green filter and that's it... also have a focusst.org sticker ... because +5hp... YA KnoW!
The car has never been tuned...
Also i'm far from being a reckless driver but I like to hit it from time to time...

The car will idle weirdly with or without AC on.
The car doesnt smoke blue or white.
And i've always used premium gas!
But i've noticed that i'm below minimum engine coolant... is this something common after 83 000km (52 000miles)?

Finally, I'm sorry for my poor english felas! If your eyes are bleeding! Stop readin!

AAnnnnnnnndddd If I get a fix next week, I will post it here for future reference!

The car :

Black Focus st3 2014.
83 000km (52 000miles)
Still on warranty until 2019 or 100 000km (62 miles)
stock
Never had any problem before... beside my rear hatch randomly opening...
 

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Dude, keep taking it to the dealership if you have a warrenty. Basically you have the codes that kills this car. Try the coils and plus next. Firat i would do a compression test on the cylinders misfiring and go from there.

Sent from my SAMSUNG-SM-G930A using Tapatalk
 

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Discussion Starter · #3 ·
So here is a little update.
Cars has been sitting at the dealer since monday.

Today Ford dealer called and told me they replaced 2-3 part related to the fuel system. Since i got (Code P0087)
They made compression test and everything is good, i'm not burning any coolant/oil either.
They just can't really put the finger on what's wrong, because nothing seems to be wrong...

So for now, my car is in the hand of ford engineer. Because the car just dies for no apparent reason.

I know there is a TSB on the wiring, so I told my dealer to look through this since everything point toward it.
(Note : Ford dealer here in Quebec dont seem to have knowledge of the TSB)

Hopefully, the TSB will solve my problem... I will update when I get more details.
Also happy that my car is still on the warranty!
 

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Discussion Starter · #5 ·
Nope... But I can't complaint really, they took my car and gave me a ''courtoisie car'' monday morning and honestly I never really had a problem with the focus since now.
But yes! i'm suprised they don't know their cars problems more then a ''minimum informed customer'' has I...

Called 3 dealers last week to know what's up and everyone told me : Nope, we never had a single issue with a focus st before.
 

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I'd suggest checking three things:

1. The TSB in the USA became a recall. Two of the seven splices in the engine harness need to be cut out and replaced, with solder, not with a new crimp like in the TSB. Here's what they need to do:

2. There are several ground wires attached to the driver's side frame rail (two of them are under the battery). These sometimes need to be cleaned up to make good contact. Also check the battery ground wire, and the engine-side of the ground wire that connects the engine to the driver's side frame rail.

3. Battery. Your car's battery is now 3-4 years old. Ask the dealer or a parts store to do a load test. If the battery is weak, voltages are off and the car can have all kinds of wonkiness. Here's an option if you wish: http://www.focusst.org/forum/focus-st-maintenance/46089-odyssey-pc1200t-battery-installation.html. Also, GrimmSpeed now makes a battery tray for us for the smaller Odyssey battery: GrimmSpeed Lightweight Battery Mount Kit - 2013+ Ford Focus ST, 2016+ Focus RS - GrimmSpeed

Hope that helps,
Mark
 
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Discussion Starter · #8 ·
I'd suggest checking three things:

1. The TSB in the USA became a recall. Two of the seven splices in the engine harness need to be cut out and replaced, with solder, not with a new crimp like in the TSB. Here's what they need to do:

2. There are several ground wires attached to the driver's side frame rail (two of them are under the battery). These sometimes need to be cleaned up to make good contact. Also check the battery ground wire, and the engine-side of the ground wire that connects the engine to the driver's side frame rail.

3. Battery. Your car's battery is now 3-4 years old. Ask the dealer or a parts store to do a load test. If the battery is weak, voltages are off and the car can have all kinds of wonkiness. Here's an option if you wish: http://www.focusst.org/forum/focus-st-maintenance/46089-odyssey-pc1200t-battery-installation.html. Also, GrimmSpeed now makes a battery tray for us for the smaller Odyssey battery: GrimmSpeed Lightweight Battery Mount Kit - 2013+ Ford Focus ST, 2016+ Focus RS - GrimmSpeed

Hope that helps,
Mark
Thx, I knew about the TSB, but like I said here in Quebec they seem to be completly unawared of this.
I told them again today when they called... since they're listening to me now.

I didn't know about the ground wire and the battery, but they made several test on the car.
I'll ask if they cheked the voltage, it seems to be a good avenue... the battery may be weak, but I never had any other issue other then the RPM and lack of power because of the misfire.

Like I said i'll update when I know more.
They said they'll look through the TSB and they will look with Ford engineer...
 

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Discussion Starter · #9 ·
good-news-everyone.jpg

Turns out my problem was actually quite simple! After 2 weeks of waiting...

The high pressure fuel pump sensor was faulty, they swapped a new one and now the car runs normally.

Bad news! this wasnt covered by the warranty anymore...
Good news! got new fuel pump in the process...

Not bad I guess?

So if you have a similar issue like the wiring TSB it might actually just be your fuel pump sensor.
Car is less then 3 years old (Bought in septembre 2014) and 52k miles.

I find this odd for a new car, but who am I to judge after owning a Pontiac fiero GT for 3 years...

Cool story bro...
 

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So here is a little update.
Cars has been sitting at the dealer since monday.

Today Ford dealer called and told me they replaced 2-3 part related to the fuel system. Since i got (Code P0087)
They made compression test and everything is good, i'm not burning any coolant/oil either.
They just can't really put the finger on what's wrong, because nothing seems to be wrong...

So for now, my car is in the hand of ford engineer. Because the car just dies for no apparent reason.

I know there is a TSB on the wiring, so I told my dealer to look through this since everything point toward it.
(Note : Ford dealer here in Quebec dont seem to have knowledge of the TSB)

Hopefully, the TSB will solve my problem... I will update when I get more details.
Also happy that my car is still on the warranty!
Some people, including me are unable to resolve the RPM drop no matter what they do. Ground, wiring harness, software updates, etc. It shouldn't have to be this way, but I just got sick of it and changed my idle RPM to 1,000 and i haven't had the issue since. This should not be the fix but I was sick and tired of dealing with Ford. This will be harder for you to do, though, since you're not tuned.
 

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What he said minus the French ^ Why is the sensor not covered? It probably wasn't expensive, but that seems odd
 

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3. Battery. Your car's battery is now 3-4 years old. Ask the dealer or a parts store to do a load test. If the battery is weak, voltages are off and the car can have all kinds of wonkiness. Here's an option if you wish: http://www.focusst.org/forum/focus-st-maintenance/46089-odyssey-pc1200t-battery-installation.html. Also, GrimmSpeed now makes a battery tray for us for the smaller Odyssey battery: GrimmSpeed Lightweight Battery Mount Kit - 2013+ Ford Focus ST, 2016+ Focus RS - GrimmSpeed

Hope that helps,
Mark

Cool find Mark! Came out today but sold out already. Yes another thing to spend money on, but if you need to replace batter anyway, you can also save 30lbs for $270. Do those smaller Optima batteries last? Wondering how my stock battery will hold up to my new dash cam's parking mode, altho it has a low voltage shutoff.
 

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Cool find Mark! Came out today but sold out already. Yes another thing to spend money on, but if you need to replace batter anyway, you can also save 30lbs for $270. Do those smaller Optima batteries last? Wondering how my stock battery will hold up to my new dash cam's parking mode, altho it has a low voltage shutoff.
The smaller Optima batteries many have reported last at least as long as a traditional wet lead-acid battery. AGM batteries typically are constructed for deep cycling and handling vibrations better than traditional wet lead-acid batteries.

But if you go to a smaller battery to fit the GrimmSpeed carrier, just remember it will drain a lot faster. Your dash cam might drain the smaller battery overnight. And even though Cobb recommends using a battery charger when flashing, many flash without. I wouldn't do that with a smaller battery.

But like you said, you save ~30lbs up front. Tradeoffs...

All the best,
Mark
 

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Discussion Starter · #15 · (Edited)
Sensor wasnt covered because it's not covered by the ''drivetrain'' 60 000 miles waranty.
*Drivetrain* is everything mecanical they said. I could probably read the warranty manual to verify their statement, but I tend to believe it.

It was 350$ with laybor taxes included in canadian.
The sensor was 100$ they charged me 1.7Hour in laybor... I find the laybor exagerated since I could have do it myself for less time.
But I'm not living in my home and all my tools are 1h30 away from where I live ATM. SO I paid the **** up, i'm far from short in cash and I wanted my car back.
Also they didnt make me pay for the rented car which is nice.

Anyway I intend to change vehicule in september and looking forward for a Colorado ZR2... Family will be expending soon and more outdoor fun to come.
 

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The smaller Optima batteries many have reported last at least as long as a traditional wet lead-acid battery. AGM batteries typically are constructed for deep cycling and handling vibrations better than traditional wet lead-acid batteries.

But if you go to a smaller battery to fit the GrimmSpeed carrier, just remember it will drain a lot faster. Your dash cam might drain the smaller battery overnight. And even though Cobb recommends using a battery charger when flashing, many flash without. I wouldn't do that with a smaller battery.

But like you said, you save ~30lbs up front. Tradeoffs...

All the best,
Mark
Thanks for the info, it's a bummer but I've been waiting for car battery technology to get better and smaller, everything else has.
 
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