Cost to reset warning light?

[Fr0dders]

yes, it's just the way the air goes in, then over the top of the enging before entering the throttle body. i though that was aiding the cooling in some way.

No

you are cooling the air that enters the combustion chambers that gets mixed with fuel.

Cooler air in this mix = more power (roughly speaking)

However, the combustion process heats the engine block + other parts of the engine and this is in turn cooled by water.

 

[Scania]

yes, it's just the way the air goes in, then over the top of the enging before entering the throttle body. i though that was aiding the cooling in some way.

Yes, your right, air flowing over the engine will cool it. but no where near enough, hence the radiator & cooling system.

Put it like this, the airflow will help the cooling in some way, yes, any beneficial way? no!

Really?

Yes, really.

so it;s just bad design getting the air to run all over the engine before actually getting into it? my bad then, thought it did that to help cooling.

Your car, as standard, had a well designed system that would direct cold air into the engine intake, helping combustion. Note:cool air going into the engine as opposed to over its exterior.

By fitting the K&N, you've effectively binned that and are now drawing air from within the engine bay, which especially in traffic, will be considerably hotter than the engine management system will be expecting hence the little warning light coming on.

I had no end of issues with my old Escort RS Turbo & a K&N cone filter,it suffered from rough running in traffic, removing the K&N and putting it back to standard (admittedly, still with a K&N panel filter) cured the problem as the engine was again drawing cooler air and the engine management was a lot happier.

I wonder if the OP is in a similar boat (Car?).

 

[SB118]

^^ so that would mean he's raised the intake temp, lower performance? Cracking kit these K&N things

 

[CaptainRAVE]

lol, this has turned into a good thread

 

[Scania]

^^ so that would mean he's raised the intake temp, lower performance? Cracking kit these K&N things

Yes, thats my guess in a nutshell.


Although heat was a major issue with modified RS Turbo Escorts, I doubt it would be quite so bad with a Fiesta ST, but a cone filter in a hot engine bay with poor airflow won't help regardless.

/Wonders if the ST Fiesta is turbo'd or not,CBA to Google.

 

[Maccapacca]

^^ so that would mean he's raised the intake temp, lower performance? Cracking kit these K&N things

Apparently manufacturers spending hundreds of thousands to millions on r&d is a waste of time, all you need is a 4" bit of drainpipe and a cone filter

 

[Begbie]

Yes, thats my guess in a nutshell.


Although heat was a major issue with modified RS Turbo Escorts, I doubt it would be quite so bad with a Fiesta ST, but a cone filter in a hot engine bay with poor airflow won't help regardless.

/Wonders if the ST Fiesta is turbo'd or not,CBA to Google.

It's not.

To be fair, I doubt that it would make a massive difference in real world terms from having a standard CAF to a K&N one. It will just be noiser with the K&N.

Though I am unsure if it will cause any problems to the car, doubtful??

 

[Fr0dders]

Don't think the overheat is the K&N filters fault.

There are loads of people with Fiesta STs who love their K&N filters who point out that the airbox fitted as standard is directly over the engine - itself a heat source, and that the K&N improves intake temps by moving the the air intake away from it.

Granted there are plenty of monkeys who will argue till they are blue in face about this stuff, even when they are wrong. But they wouldn't be arguing till they are blue in face about its benefits if it made everybody's engine overheat.

If it doesn't make everybody's engine overheat and just the OPs, its more likely he fitted it wrong. OP can you post a photo so we can see if you fitted it correct ?

 

[Howard]

Higher intake temps are very unlikely to cause the engine to 'overheat' in the traditional sense, unless something's terribly wrong or you're driving it hard on track. It may well cause the engine to start knocking/pinging and thus upsetting the ECU and maybe causing it to go into a failsafe mode though.

 

[Begbie]

Don't think the overheat is the K&N filters fault.

There are loads of people with Fiesta STs who love their K&N filters who point out that the airbox fitted as standard is directly over the engine - itself a heat source, and that the K&N improves intake temps by moving the the air intake away from it.

Granted there are plenty of monkeys who will argue till they are blue in face about this stuff, even when they are wrong. But they wouldn't be arguing till they are blue in face about its benefits if it made everybody's engine overheat.

If it doesn't make everybody's engine overheat and just the OPs, its more likely he fitted it wrong. OP can you post a photo so we can see if you fitted it correct ?

I'd imagine they're pretty hard to fit wrong? It connects to a pipe and pretty hard to put in the wrong location the engine bay is hardly massive.

 

[Fr0dders]

I'd imagine they're pretty hard to fit wrong? It connects to a pipe and pretty hard to put in the wrong location the engine bay is hardly massive.

do we have to dig that thread up to show how wrong you can get it ?