sonic
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| posted on 30/12/12 at 10:53 PM |
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Kia Sedona engine fault
Hello all
My father has a Kia Sedona ( Not my cup of tea but he likes it) its a 2.9 Diesel automatic. I drove it today for the first time and it has a strange
fault as follows
Starts straight away everytime, sounds ok, drives as it should and pull very well etc, all of a sudden it seems to drop its revs as though somebody
has turned the engine off.
No lights come on the dash board and if you move the throttle slightly it comes alive again and it runs fine, it seems to happen between 40-55mph 2000
rpm ish.
I drove it over 140 miles today and it happen 8 times, doesnt stop breakdown or anything and as said if you put your foot down a bit more off it goes
again no problem, 70 mph plus on the motorway today no problem at that speed.
Apart from the fault it drives fine, good mpg and has only done 52000m from new.
Any ideas would be great
Mick
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morcus
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| posted on 31/12/12 at 12:13 AM |
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I'm confused, around 2000 revs it drops the revs in a diesel with an auto box? Is it not just going into overdrive? Or have I miss understood
the question? Giving it more throttle would knock it out of over drive, and at faster speeds you'd obviously still need more revs.
In a White Room, With Black Curtains, By the Station.
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Ninehigh
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| posted on 31/12/12 at 01:48 AM |
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They still have overdrive?
Sounds more like it's cutting out and touching the throttle is getting the fuel back in. I persume there's a drop in speed too not just
revs otherwise the overdrive explanation makes sense
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britishtrident
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| posted on 31/12/12 at 08:07 AM |
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I presume it is drive by wire It sounds like a throttle pedal pot fault ?
[Edited on 31/12/12 by britishtrident]
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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Peteff
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| posted on 31/12/12 at 09:09 AM |
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If you don't move the throttle what happens, does it coast to a halt and does the engine actually cut out ?
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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perksy
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| posted on 31/12/12 at 10:57 AM |
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Code reader with live data would be useful (you could see whats happening when the problem occurs) it may even pick up a 'pending
code'
Had a new shape Clio that did a similar thing but only when cold, by reviewing the data you could see that the graph for the TPS/Throttle body was all
over the place and they are a known fault on these.
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sonic
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| posted on 31/12/12 at 12:25 PM |
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No it is not an overdrive type fault.
If you hold your foot in the same position when it does it, the revs drop down to about 1000rpm and the car starts to slow down, there is a noticible
jolt like somebody has dabbed the brake pedal slightly or the engine has cut out.
It seems to cut the revs back to tickover and then if you move the throttle slightly it picks up agian, when it isnt doing it,it drives fine.
It has got a TPS and that was my thought, i am just gathering the opinion of you chaps before shelling out wasted money.
Thanks for your replies any other ideas please let me know.
Mick
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SCAR
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| posted on 31/12/12 at 03:23 PM |
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Have the throtle position sender checked, alternatively just try to stick to 70 everywhere)
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