I just got home after a 500 mile drive with a new to me 2018 V6 manual F-Type. I'm still learning the car. On start up it acts as if I'm blipping the throttle, which I am not, is this normal?Can it be programed out in some way. When it has no oil pressure I want it to start at idle. All fun so far

 

Mine starts at a higher rpm (1200?) than idle for about a minute to get things up to pressure and then it drops to around 650. It doesn't vary the speed between those to levels, though. Mine is a V8 auto, if that makes a difference.

 

If you are referring to the minute when you hit the start button and the engine revving that is referred to as "the bark". I don't think there is anything you can do about it. Maybe one of the engine tuners has a map that will remove that but I have never heard it mentioned.

Congratulations on the car. Any pics?

 

Big cats don't bark, they roar when they're woken up!

 

Newer F-Types have an option for a quiet start. Unfortunately that option is not available on 2018 models.

 

It's not actually blipping the throttle, it's that the exhaust valves are open at startup and then when vacuum pressure builds up, they close. It's just a loud start.

 

Hi @nickhand

Your car is performing completely normally. On cold starts, modern engines with tighter tolerances and modern bearing materials, engineering wants them to spin faster when cold which, I know, is counterintuitive to the old days when both tolerances on moving parts were looser and materials were far more basic compared to today.

If it is any consolation for you - all of the performance cars I've owned in the last 20 years start up at a higher RPM on a cold start, then calm down to a normal operating RPM when the ECT reaches predetermined milestones. It is all done using a data table found in the "idle" section of the tune.

I can show you a pic of a typical (not Jaguar specific) cold start idle table. The computer chooses RPM from the table based on the startup coolant temp. Then the program is designed to run for specific seconds, but as the ECT changes (warms up), so does the run time and the RPM found is a specific cell. A slang way to put it - the ECU starts at a point on this chart, then "runs the table" until operating RPM is reached. In this particular tune, 650 is operating RPM.



The page of the tune right above this one that gives access to this table is this one:



The sub category - Startup Idle RPM shows two "bubbles" that produce a data table like the first pic. The first pic, in this case, is the P/N table.

These can be accessed by a tuner. I have to say, I've never changed these startup idle tables in a tune and would have a hard argument with an owner if I was pushed to changed them when I was tuning. My advice is just let the tune do what it does...all legitimate.

ADD - Some are commenting about the noise, and not the startup RPM. If that is what you mean and not the higher RPM, the ECU is just setting the exhaust flaps after startup. Still normal.

Hope this helps,

BEST!

 

"I know, is counterintuitive to the old days ". Yes it is and thanks for the detailed response. From what I read in all the responses my car is behaving normally. It's also counterintuitive to me not to have an engine dipstick. I'll get some pictures up soon. Blue with a light grey interior.

 

Maybe no dipstick, but you can change your own oil, without a lift, with a Mityvac and a few handtools. rather than the $$$ at dealer.

Many of us use Liqui-moly from FCPEuro

https://www.fcpeuro.com/?ads_cmpid=1...id=12989672081

 

I’ve seen this mentioned a few times but I don’t believe this is truly the case because the valves stay open for at least 5 to 7 seconds and then close, so you at least get the loudest part of the bark/roar still.

With the aftermarket ASR controller being talked about right now on the forum you can achieve a true quiet start because it can ensure the valves stay completely closed the whole time.

 

I have this in my car. It does work and listed in the owner's manual:

 

What year is your F-type?

 

It isn't. That's an Aston Martin.

 

The quiet start feature might be available in F-Types, but likely on 2021 and newer models when the system went to step motors. It should be described in owners manuals if it is there, somewhere in the driving section where push button start is described.

 

I looked and could never find it, and there has been discussion on the forum basically saying what I said above. I have a solution now that I’ve installed an ASR valve controller, but if anyone can say for sure that it is a thing on the new F-types I’d be curious. I’ve yet to see definitive evidence that it actually has it.

 

As per Google here is some information on quiet start:

1. Default Quiet Start (V8 models):

• For V8 F-TYPEs, the Quiet Start feature is usually enabled by default.

• The exhaust valves remain closed on startup, resulting in a quieter engine sound.
• After a few seconds, or when the engine is under load, the valves automatically open.

2. Overriding Quiet Start:

• Dynamic Mode:
  Engaging Dynamic Mode before starting the engine will override the Quiet Start feature, opening the exhaust valves immediately.
• Switchable Exhaust Button:
  Alternatively, pressing the switchable exhaust button (if equipped) before starting the engine will also bypass the Quiet Start feature and open the valves

3. Understanding the Exhaust System:

• The F-TYPE's dynamic exhaust system has valves that control the sound.
• In Comfort mode, the exhaust is in a base configuration.
• In Dynamic mode, the valves are fully open, creating a louder, more aggressive sound.
• The switchable exhaust button allows you to manually control the valve position

4. In essence, Quiet Start:

• Allows for a more subdued engine start on V8 F-TYPEs.
• Can be overridden by engaging Dynamic mode or activating the switchable exhaust button.
• Provides a balance between a quieter startup and the ability to unleash the full exhaust note when desired.

 

None of that information is correct.

 

Exactly, that looks like typical AI-based output from Google searching that comes at the top of the results…That may or may not be correct…

I searched wide and far in the manual and it is mentioned nowhere, nobody on here has ever definitively said they have found something that works, and my personal experience says that it does not exist (especially if it is default behaviour).

Happy to be proven wrong with definitive info.

 

The article at the link below from JLR echoes what Google listed about quite start mode.

https://www.jlr.com/news/2019/12/new-jaguar-f-type

 

Yup, I’ve read that before, and I’ve seen it mentioned as a feature in review videos. But once again, the conclusion is that it is default behaviour. Default behaviour is the valves are open and then they eventually close after 5 to 7 seconds. I think that is what they are referring to, but different people will have different ideas on what quiet means. That 7 seconds will wake your neighbour so it’s not quiet in my books.

The fact that it is default behaviour I suppose could explain why there seems to be no mention of it in the manual.