Starting up when warm

[mrvette]

Theres something my car has been doing basically since i bought it, so I was just wondering if it is normal or if there is somthing wrong.

When I start it up from cold it fires up more or less straight away, however when its warm it takes a good 5-10 secs to fire up and a blip on the pedal, but after that all is well, any ideas? or am I just stressing for no reason

[sayerbloke]

When the weather is warm, or when the engine is still warm because you've been running it recently?

[mrvette]

sorry forgot to say, it is when the engine is warm, weather doesnt seem to bother it.

[Gixer]

Sounds like heat soak to me. When you start the engine after it has been cooling parts will be at different temps including the sensors so for a short time odd readings will be made for the ECM and so you get 'lumpy' running until everything is within its usual temp range. Every car I've had (electronic) has been the same. From a cold or hot start everything would be fine. My Supra was really lumpy on a warm start

[sayerbloke]

Ah, yeah, my BMW 328i coupe does the same thing.

Wouldn't be overly concerned

[mrvette]

Good to hear!

thanks chaps

[yellowshark454]

Sorry to be negative but in 4.6 years of C5 ownership, daily driver, this has never hapened to me (touch wood)

[Gixer]

yellowshark454 said:

Sorry to be negative but in 4.6 years of C5 ownership, daily driver, this has never hapened to me (touch wood)

maybe you have never really noticed it - all cars that use various sensors do it and unless someone can make an engine cool down in a uniform fashion - which they cant - they will still all do it. How about on the bike they also do it although much less?

[anonymous-user]

Not a problem on modern designs like C5.

[Gixer]

5 USA said:

Not a problem on modern designs like C5.

[yellowshark454]

Gixer said:

yellowshark454 said: Sorry to be negative but in 4.6 years of C5 ownership, daily driver, this has never hapened to me (touch wood) maybe you have never really noticed it - all cars that use various sensors do it and unless someone can make an engine cool down in a uniform fashion - which they cant - they will still all do it. How about on the bike they also do it although much less?

Cant agree. I noticed when I reversed into the drive gates so I know I owuld notice something like the Vette being harder to start, as you can I am senstive to these things Never had a problem with bike either. althjough 24th gear is a bit of a slog