My wife's 93 cse 2.3t has the same problem for well over a year. I've had it checked by the dealer and my indie with no solution. I suppose if I had an unlimited supply of money eventually the dealer could find something. But with their diagnostic computers, a defective part could or should be found in short order.

Plugs were changed (ngk) and the old ones didn't reveal any problems with combustion- Air filter was changed -- thermostat changed. In the interim, the di cassette was changed and the timing chain replaced. THe engine sounds and runs fine and the performance is the same. There is no fuel smell anywhere. I was worried about it passing the emissions test but it passed with flying colours.

I've been told that driving habits, temperature changes, tires etc. etc. make a difference. This I believe. But when the difference in fuel economy is so large for such and extended period, I don't believe it can be one of those things.

Please post a solution if you find one.


posted by 207.35.18...

• Ridiculously low MPG--causes?, Geza in CA, Wed, 15 Dec 2004 10:45:00
  • Re: Ridiculously low MPG--causes?, bosk0691, Fri, 17 Dec 2004 09:09:21 <-- Viewing This Message
    • I'll let you know, Geza in CA, Fri, 17 Dec 2004 22:44:34
  • fuel leak, RyanR, Wed, 15 Dec 2004 20:21:41
    • Could you see/smell fuel, Geza in CA, Wed, 15 Dec 2004 21:06:23
  • Re: Ridiculously low MPG--, Andrew , Wed, 15 Dec 2004 12:34:06
    • On hybrids,, Geza in CA, Wed, 15 Dec 2004 14:08:07
  • Intake air temp. sensor?....., zeke, Wed, 15 Dec 2004 11:45:54
    • and don't forget the air filter..., Street, Wed, 15 Dec 2004 12:39:22
      • But wouldn't these things affect performance?, Geza in CA, Wed, 15 Dec 2004 13:54:53
        • Not necessarily..., Street, Thu, 16 Dec 2004 23:51:16
        • Thermostat, Wingerr, Thu, 16 Dec 2004 05:08:00
  • Re: Ridiculously low MPG--causes?, Chris M, Wed, 15 Dec 2004 11:17:22
  • Re: Ridiculously low MPG--causes?, Seattle Matt, Wed, 15 Dec 2004 10:50:56
    • Good idea, will try, but, Geza in CA, Wed, 15 Dec 2004 11:41:33
      • Re: Good idea, will try, but, TML , Wed, 15 Dec 2004 12:50:04
        • The last two digits of NGK's are the gaps..., zeke, Wed, 15 Dec 2004 13:12:41
          • Re: The last two digits of NGK's are the gaps..., TML , Wed, 15 Dec 2004 15:59:20
          • Should be 1.0, no? n/m, Geza in CA, Wed, 15 Dec 2004 13:48:12
            • Yes, 1.0 is within tolerance, anything above...., zeke, Wed, 15 Dec 2004 15:42:08
              • Re: Yes, 1.0 is within tolerance, anything above...., TML , Wed, 15 Dec 2004 16:03:48
                • 0.8mm to 1.1mm range, Wingerr, Sat, 18 Dec 2004 14:11:18
      • Always check plug gap, BrianZ, Wed, 15 Dec 2004 12:27:54
        • i've had plugs so worn there was almost nothing left, aaron, Wed, 15 Dec 2004 15:07:40

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