Running on?

Author
Discussion

Chris71

Original Poster:

21,536 posts

243 months

Thursday 16th July 2009
quotequote all
I'm probably being paranoid here, but it sometimes seems like my car runs on a bit after I cut the ignition (quite ironic given the issues getting it started...)

I'm conscious that it's been known to blow oil out of the catch tank and I just have images of something pressurising the system and blowing oil up into the combustion chamber too. Anything I need to check or am I just being an idiot (again)?

ewenm

28,506 posts

246 months

Thursday 16th July 2009
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Mine does that too sometimes. Nothing to worry about (or so I was told).

Dave J

885 posts

267 months

Thursday 16th July 2009
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its linked to the radiator fan being on when you cut the ignition and the current from the fan drives the ignition for a short period ......... or something like that.....

when the fan is off, you dont get ( or shouldnt get) run on


chug chug .....chug ..chaaa .clunk ......

barong77

57 posts

193 months

Thursday 16th July 2009
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As the wise man above said tizz the fan nothing to worry about.

Chris71

Original Poster:

21,536 posts

243 months

Thursday 16th July 2009
quotequote all
Excellent, thanks.

I'm still having slight difficulty coming to terms with the idea that I bought a car blind for a knock-down price and it actually paid off. That's a stark contrast to my usual car buying luck, and hence something bad is bound to happen before too long... smile

ETA While I'm obsessing about things: Something - I think the catch tank - still seems to gurggle occasionally when I turn it off (may well be doing it other times, but that's when I can hear it). Is that normal? Never owned a dry sump'd car before... It's just for a second, rather like the last bit of a bath draining!

Edited by Chris71 on Thursday 16th July 16:52

thinfourth2

32,414 posts

205 months

Thursday 16th July 2009
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its a roadsport A it is going to gurgle and fart and makes loads of strange noises and yes the diff is normally that noisy

ewenm

28,506 posts

246 months

Thursday 16th July 2009
quotequote all
Chris71 said:
ETA While I'm obsessing about things: Something - I think the catch tank - still seems to gurggle occasionally when I turn it off (may well be doing it other times, but that's when I can hear it). Is that normal? Never owned a dry sump'd car before... It's just for a second, rather like the last bit of a bath draining!
Suck back from the catch tank as pressures change perhaps?

Chris71

Original Poster:

21,536 posts

243 months

Friday 17th July 2009
quotequote all
thinfourth2 said:
its a roadsport A it is going to gurgle and fart and makes loads of strange noises and yes the diff is normally that noisy
hehe

Sums it up perfectly.

BertBert

19,101 posts

212 months

Friday 17th July 2009
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My SLR used to cluck very nicely when ticking over and the Ds pump sucked on air!
Bert

fergus

6,430 posts

276 months

Friday 17th July 2009
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BertBert said:
My SLR used to cluck very nicely when ticking over and the Ds pump sucked on air!
yes Mine sounds like it's about to lay an egg after it's been turned off!

Chris71

Original Poster:

21,536 posts

243 months

Friday 17th July 2009
quotequote all
fergus said:
BertBert said:
My SLR used to cluck very nicely when ticking over and the Ds pump sucked on air!
yes Mine sounds like it's about to lay an egg after it's been turned off!
Nah, mine is uncannily sink (or bath) like.

It makes a vast array of noises, but so has every racing car I've been in, none of them sound particularly out of place.

dino ferrana

791 posts

253 months

Sunday 19th July 2009
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The fan spinning after ignition cut briefly acts as a generator and provides enough current to keep the car running. Nothing to worry about, but disconcerting until you have had it explained!

Caterhams do make a fair bit of mechanical noise, some more than others. We are so used to cars now that have inches of sound deadening and very refined mechanicals that it is easy to let these noises worry you.