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Author Topic: very high rev at cold start  (Read 4898 times)

Offline spyder_696

  • Idling (800 rpm)
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  • Posts: 126
very high rev at cold start
« on: October 09, 2011, 11:53:54 AM »
hi, recently i realise my engine at cold start has very high revs...
maybe up to 3K over rpm at cold start automatic...
never realise this before...
only last 1 or 2 weeks or so...
before this, 1 or 2 month ago.. engine check light comes up, but goes off after restarting engine..
but last nite engine cannot start.. only start after 10-15 cranks..
actual date and time line i not very sure..
but for sure engine cannot start immediately is last nite...

hope to get some advise..
1 month to 4 years old at 55k mileage...
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Offline kt

  • Idling (800 rpm)
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  • Posts: 149
  • Car Color: Amethyst Grey
Re: very high rev at cold start
« Reply #1 on: October 10, 2011, 08:42:10 AM »
Could be due to your spark plugs?
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Offline ccsSGM

  • Mid Zone (3000 rpm)
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Re: very high rev at cold start
« Reply #2 on: October 10, 2011, 09:54:44 AM »
Mine once in a while also such condition
5yrs car
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Offline Roy

  • Cool Engine (0 rpm)
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Re: very high rev at cold start
« Reply #3 on: October 13, 2011, 12:23:46 PM »
Send for check. dun wait till bigger problem arises.
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Offline corgan

  • Max Torque (4400 rpm)
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  • Posts: 2,246
Re: very high rev at cold start
« Reply #4 on: October 13, 2011, 07:10:52 PM »
not battery issue I suppose?
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Offline vinzlee

  • Cool Engine (0 rpm)
  • Posts: 33
  • Look ahead of situation
  • Car Color: Silver
Re: very high rev at cold start
« Reply #5 on: October 17, 2011, 02:38:14 PM »
Faulty spark plug or connection.
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Offline kendrick1430

  • Cool Engine (0 rpm)
  • Posts: 32
  • Car Color: red
Re: very high rev at cold start
« Reply #6 on: October 18, 2011, 04:20:49 PM »
Dear All,

i also have this problem when COLD start or 1st start on the day but after that it only maintain @ 2k rpm.
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Offline spyder_696

  • Idling (800 rpm)
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  • Posts: 126
Re: very high rev at cold start
« Reply #7 on: May 13, 2012, 09:31:41 PM »
Dear all, couldn't stand it any more..
Sent my car to tan Chong bukit timah.
Fault code detected ( same no as my work shop )..
Kwek recommend change throttle assembly..
Diagnose cost 65..
Throttle body cost 14x..
Labor cost 74..
About 300.. Kwek was quite good guy..
Expedite my request on both my visit..
I made appt via Internet.. Late 4hrs on visit one..
On time 2nd visit..
My car stall 5 times one day..
Another day one time..
Cool start rpm 4k..
Idling 1.5k..
After changing throttle body..
Cool start 2-2.5k rpm.. Idle 1.5k but will drop to 1k..
Got to monitor.. Hope my English can be understood..
Need help or question pls feel free to ask..
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Offline spyder_696

  • Idling (800 rpm)
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  • Posts: 126
Re: very high rev at cold start
« Reply #8 on: May 13, 2012, 09:34:09 PM »
Quote from: kendrick1430 on October 18, 2011, 04:20:49 PM
Dear All,

i also have this problem when COLD start or 1st start on the day but after that it only maintain @ 2k rpm.

If u don't apply brakes.. Idle 2k rpm can bring u up to 70km/hr on flat road..
Mine idle 1.5k rpm.. Fc super bad.. Finally now changed new throttle body..
Now monitoring..
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Offline spyder_696

  • Idling (800 rpm)
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  • Posts: 126
Re: very high rev at cold start
« Reply #9 on: May 13, 2012, 09:36:11 PM »
Quote from: ccsSGM on October 10, 2011, 09:54:44 AM
Mine once in a while also such condition
5yrs car

My car nov 2007..
1 yr ago start infrequent symptoms..
Last month or so very frequent..
So no choice changed a throttle body as per tan Chong recommend..
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