85 240 Turbo fluttering idle
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    1. #1
      Junior Member
      Join Date
      Mar 2011
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      tampa,fl
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      158

      85 240 Turbo fluttering idle

      Looking for any ideas. In need of help. Out of the blue developed a strange idle. See video. Stays idling and drives perfectly fine until you are in motion and coast in which case it dies. I changed ignition components, tried several IAC's, couldn't locate any vacuum leaks. Seems to be worse when engine is warm. ECT sensor is new. Fuel filter is new. Any ideas? It's almost like it can't get good fuel stream at idle but it drives strong when on the accelerator.

      https://i.imgur.com/YNftUTA.mp4
      1985 240 Turbo 330K | 1995 Yellow T5-R 238K | 1996 850 Turbo 250K | 2005 S40 2.4i 178K | 2005 XC90 2.5T 240K | 2006 C70 T5 214K | 2007 S40 T5 170K

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    3. #2
      Junior Member
      Join Date
      Dec 2018
      Posts
      26
      Probably the warm up regulator taking a crap. You can remove it and clean out the screens where the inlet and outlet lines go in. There’s a 99% chance they are plugged with debris.

    4. #3
      Junior Member
      Join Date
      Mar 2011
      Location
      tampa,fl
      Posts
      158
      Is that the control pressure regular?

      Semi positive update. Reset base idle and car doesn’t die ever anymore. Still flutters but only with a current draw. For example, lights on, a/c on, operating power windows, etc. If all those are off car idles flat. I am thinking it is electrical related. Fuel pressure seems to be good.
      1985 240 Turbo 330K | 1995 Yellow T5-R 238K | 1996 850 Turbo 250K | 2005 S40 2.4i 178K | 2005 XC90 2.5T 240K | 2006 C70 T5 214K | 2007 S40 T5 170K

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