Lost turbo boost

This topic has 20 replies, 6 voices, and was last updated 2 years, 12 months ago by HamJam.

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October 26, 2017 at 8:58 PM #69685

Tubsy250
Participant

UK - England

Posts: 206

Driving my car home tonight driving quite hard ,changed into fifth gear and service light came on and lost boost ,pulled over turned car off and then back on no service light and full boost again car only done 3000 miles.Drove another 10 miles using full throttle as many times as I could and all is well? could it be an electrical gicth

October 26, 2017 at 9:04 PM #69688

red-leader
Participant

UK - England

Posts: 2372

Another thought, it could be a sensor connection. Had a similar issue on my Cosworth which was a bad connection into the ECU.

October 26, 2017 at 9:23 PM #69695

jasoni
Participant

UK - England

Posts: 346

I have had exactly the same thing, has only ever done it once. A member on here read about the same issue a guy had on another forum, that the symptoms experienced could be down to a poorly performing wastegate solenoid which Ford confirmed and changed under warranty. If it happens again take it in to the dealer.

October 26, 2017 at 9:41 PM #69697

Tubsy250
Participant

UK - England

Posts: 206

That sounds about right it’s was boosting but only about .25 bar like the wastegate Was opening and dumping the boost

October 27, 2017 at 12:38 AM #69714

o1turbo30v
Participant

USA

Posts: 160

It’s called an overboost fault that caused the car to go into limp mode, basically the turbo was making more pressure than the ecu wanted, the ecu couldn’t control it fast enough so it went into limp mode, reduced power and boost, surprised you got that on stock programming

October 27, 2017 at 6:42 AM #69718

Tubsy250
Participant

UK - England

Posts: 206

The car running mountune fpm375 tune

October 27, 2017 at 7:02 AM #69720

jasoni
Participant

UK - England

Posts: 346

As mine is tubsy

October 27, 2017 at 8:20 AM #69724

rs-le
Participant

UK - England

Posts: 372

Hi all

This week I had fpm done, warmed up from dealer, 1st full beans squirt in 2nd & 3rd , display showed engine service now! “Wtf”, when I arrived at my destination 3 miles later, turned car off , then on , message gone, not done it since? Not due a service for a few months yet either and mileage is low. Oil level ok , topped up once ,1/4 litre after 1st 1500 miles a couple of months ago, Water level ok.

um , will go back to dealers if it happens again…

October 27, 2017 at 12:29 PM #69742

gary1234
Participant

UK - England

Posts: 900

to be honest I have had that on mine I was told to lock the car then re open it twice and it would solve it

never done it since it was 2 days after fpm installed ,

October 27, 2017 at 1:01 PM #69748

Tubsy250
Participant

UK - England

Posts: 206

Hi spoke to fred at mountune today, and he said if you hit the Rev limiter it can cause the issue which mine did,so nothing to worry about must learn to change gear quicker done to many miles in dsg car .

October 27, 2017 at 1:08 PM #69750

rs-le
Participant

UK - England

Posts: 372

Cheers tubsy250 I was on the limit lol, nice bit of info, memo to self change gear quicker lol ?

September 19, 2018 at 11:07 AM #99376

Eddiewin87
Participant

Australia

Posts: 31

@Tubsy250

I’ve just had this exact same problem. Thank the Flying Spaghetti Monster for this club. I can find anything that could go wrong with the RS here.

Aussie V8 rivalry is dead.

Holden V8 Traitor.

xForce 3″ catback varex exhaust

Mountune Cold Air Intake

Forge Recirculation Valve

Dreamscience Ultima 2

Magnetic Grey

Gel spoiler inserts

December 31, 2018 at 5:47 PM #108474

stteb
Participant

UK - England

Posts: 173

I lost boooost the other day ..

took the under tray off , a clamp came loose on my hard pipe from turbo to intercooler , which I upgraded about 5 months a go .

February 11, 2020 at 8:14 AM #140180

Cedric Vanraemdonck
Participant

Belgium

Posts: 1

Hey guys, i need your advice.

my car threw a check engine light yesterday.
went to the shop, put it in obd and got some turbo fault codes.
It makes insufficient power/ boost but there seams to be no leakage.
Its a 2016 ford focus rs, mountune intake, mountune recirculation valve and muffler delete. No further tuning or so …. anyone got advice or had this problem before ?

July 20, 2020 at 6:37 PM #151815

Hotdog9087
Participant

UK - England

Posts: 3

Hello, new to the site.
rather than starting a new thread, can I add to this?
I have a 2016 RS running race de-cat, forge uprated recirculating valve and dreamscience v3 re-map.
was driving along today (not raking it) and there was a huge loss of power. There are no warning lights on, no noise or smoke but the turbo gauge doesn’t move on acceleration and the car is slow to pick up.
Any ideas! T.i.a.
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