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Engine Rough Intermittent - DI?? Fuel pump??
Posted by aaron (more from aaron) on Sat, 4 Sep 2004 05:30:00

So, my new 93 9000 auto CSE is having it's quirks revealed already (I've had it a week now). Every once in a while it starts and runs very unevenly, then smooths out. Twice now, it has stayed uneven, and so as I drive down the road, power is limited, and the car vibrates with the uneven running. Behaves the same throughout RPM range, and in neutral.

Is this missing a cylinder??

Last night when it did it, we turned off car, came back a couple hours later, and it's been fine since.

Is this symptom of DI cassette issues starting?? Is there something to clean on the cassette that could be responsible. I have a good one in my 92 9000 which is out of commission due to slave cylinder issue, so I can switch, but since it does it so rarely (once a week ago, and once last night), it might take a while to diagnose.

Could it be fuel pump starting to go, any other ideas??

Thanks

posted by 64.136.26...

Posts in this Thread:

Engine Rough Intermittent - DI?? Fuel pump??, aaron, Sat, 4 Sep 2004 05:30:00
- I vote DI - Very similar to when mine started to fail, 97 aero auto, Sat, 4 Sep 2004 07:07:29
  - do you have to reset ecu everytime you unplug DI, aaron, Sat, 4 Sep 2004 11:37:17
    - No I actually have never seen this stated anywhere, 97 aero auto, Sat, 4 Sep 2004 14:41:32
- Re: Engine Rough Intermittent - DI?? Fuel pump??, Sam (Merc Mechanic), Sat, 4 Sep 2004 05:54:03
  - can you describe crank angle sensor, aaron, Sat, 4 Sep 2004 11:38:09
    - Photo and $.02, TRJ, Sat, 4 Sep 2004 19:49:14
      - try to systematically, Abusot, Wed, 8 Sep 2004 13:07:04
      - Trionic has totally different CPS..., Street, Tue, 7 Sep 2004 08:56:33
        Yes...always double check info for your model year, TRJ, Tue, 7 Sep 2004 17:13:44
        No problem, TRJ..., Street, Wed, 8 Sep 2004 12:14:13
      - Re: Photo and $.02, aaron, Mon, 6 Sep 2004 04:41:02
  - Re: Cold H2O on CPS ? Sam what's behind this trick, Daren, Sat, 4 Sep 2004 10:44:40
    - When the CPS starts to go...., turrbo , Sat, 4 Sep 2004 11:41:13
      - Re: When the CPS starts to go...., Sam (Merc Mechanic), Sat, 4 Sep 2004 22:01:55
        Yup, exactly correct. There are connector wires that, Lu, Sun, 5 Sep 2004 09:21:58

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