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25-11-2005, 12:20 AM
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Regular Member
Join Date: Apr 2005
Location: Adelaide
Posts: 101
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I have an AU1 I6 auto, tickford intake, k&n filter, headers, hi flo cat and 2 1/2" system and an unopened engine with 135,000klm.
Serviced regulary, had an EFI tune done about 7000k's ago involving plugs,fuel filter, K&N cleaned and reoiled, fault codes checked (all clear). It has recently started to surge when running at a steady speed at running temperture. I can be sitting on 60km/h or 80 and it will intermittently surge forward in revs and off then surge again. I have had it in my local trusted Ultra Tune and they did all the checks again, come up with some fault codes that pointed to the MAP sensor, i had them replace it and then codes cleared. Car ran well for 2 weeks and now tonight problem has returned  Has anyone got any ideas what could be causing this ?  : I have also always used the same premium unleaded from the same servo for the past 5 years with no problems. Thanking you in advance Alan. |
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Au Surging
Linear Mode
