Hello,

So what i mean about this is do engines sometime just run better on some days to others?

I was in the fiesta the other day and for some reason it felt so fast just went to 90 like it was nothing but yet today same thing and just felt slow? Seems to have its days of bring faster than others?

Same thing with over taking, You can drop it into 3rd and it loves it (feels like boost, well maybe not but you know) but other days its like ive left it in 5th. There is nothing wrong with the car.

I have felt the same in the van for work.

Or is it just how you seem to feel from day to day? If so I'm unwell

Cheers.

Think im gunna be shot down for this

 

Weather and temperature can dictate how a car response day to day.

 

Hot and cold days.

 

Is it really as simple as that? Feel dumb now asking lol

 

Yeah lol

 

Could be an intermittent fault too
Maybe code read

 

All the more reason to designate cars as "she"...

 

I've noticed it before

 

My astra gte 16v felt rapid as fuck some days and averagely quick on other days , turned out to be a faulty loom but I get what you mean , my sierra is the same some days feels fast and idles fine other days its a right grumpy old ford !

 

^^ This! Some days it really shit on start up and others its fine.

To night i did give it a quick thrash when i picked the misses up and there is a whining now Does not sound good. Just hope its down to the weather

 

Det sensor kicking in can cause this on some cars.

 

The relative humidity of the air might have an influence on temp sensors. I notice this some days with the focus.

 

Also if the car has just been cleaned they go better

 

I dont think my cossie like the winter cause thats when my alarm plays up the most lol.

 

They normally run very well just before going bang.

 

yb trait?

 

My Focus 1.6 is one the worst for this, runs best just after it has rained, shame everywere is so slippery haha

 

Yep, more noticable in turbo cars I've found. They love cold dense air!

 

Low and high air pressure may have an effect?