high mountan pass's CEL?? | Ford Escort Owners Association (FEOA)
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high mountan pass's CEL??

Discussion in '2nd Gen 1991-1996 1.8L DOHC' started by cheap-escort-CAN, Jul 28, 2010.

  1. cheap-escort-CAN

    cheap-escort-CAN FEOA Member

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    Ok so when going to the interior I get a CEL and loss of power fells like it bogs down hard to maintain speed only on the high mountain passes!! Its fine when in town I ran the code got oxygen sensor so I changed it... still getting the CEL and bog'y felling any ideas, is there an altimeter in the MAF that changes air to fuel ration when the air is thinner?? That might be buggerd up iam running the hybrid K code MAF :(

    ps the cel will go on and off during the trip but only in the mountains when it go’s off the car will suddenly get the loss’ed power back :x
  2. cheap-escort-CAN

    cheap-escort-CAN FEOA Member

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    sorry 95 egt so it is a VAF not MAF like i stated above
  3. Bomdoutscort

    Bomdoutscort FEOA Member

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    I think that your car just cant cope with the thin air and the ecu see's a problem and throws the cel. I know what you mean though. On our way through the mountains to s. carolina my fiance's 2008 accord also experienced the loss of power.
  4. cheap-escort-CAN

    cheap-escort-CAN FEOA Member

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    Good to know I’m not the only one it’s not a big deal still makes it up the hills just a subtle loss. More of a peeve off seeing the CEL on then off then on ext. thanks for help.
  5. LOWETGT

    LOWETGT FEOA Member

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    I had a similar instance once. While in cruise at about 77MPH, the car shook/bucked slightly and the CEL popped on. It has a bog spot for a short period, but changing the speed/RPM seemed to help a lot. At the off ramp about a mile later, it went off and hasn't returned. I have dinked with my air meter since with no problems. I don't have an altitude problem here in IL. If parameters weren't changed and the air is thinner, it would be more rich right? Hope to get a meter to make even better.
  6. cheap-escort-CAN

    cheap-escort-CAN FEOA Member

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    I would assume it would run rich because it did show an O2 code then I spent the money on it and same code thus running rich still? My car is from the interior then I moved to the coast it has only started doing this in the last year before never had this problem. Scared the crap out of me the first time being in the middle of no-where and all. Maybe it's just the cars way of telling me it like's the sea level fresh air, one stubborn little car!
  7. StealthStyle

    StealthStyle FEOA Member

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    is the vaf tuned?

    its probably gonna be the vaf causing this problem, since it is not calibrated the same as the stock one.

    btw, the loss of power is normal at high elevation.



    edit: the reason you get that code is because it is running too rich. you can replace the o2 sensor all you want, if it is running too rich its still gonna throw a code... again, the vaf is causing it to run rich..
  8. cheap-escort-CAN

    cheap-escort-CAN FEOA Member

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    Yeah that’s what my suspicions where I will swap out the other vaf for the stock one when I go up this weekend and see if it stops this from happening thanks for the reply
  9. EGTBEAST

    EGTBEAST New Member

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    Hello there. I've had the same problem not only once, but twice. I'm 100% sure is the O2 sensor going bad. After i changed mine the car run perfect.
  10. LOWETGT

    LOWETGT FEOA Member

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    I should change mine, it is an original with almost 200K on it. I think it is doing well though, the A/F meter shows what I expect.

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