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Thread: The Odissey continues: Fuel pump for a 1987 Colony Park?

  1. #21

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    Thanks Gadget!!! Really helpful!

    I´m not sure if the engine was properly warmed up, i let the engine run some minutes, but will try it again but sometimes, the engine stop and doesn´t allow me to mantain the idle.
    About the oxigen sensor, it needs to be a HEGO? (heated sensor), or could be an EGO?
    how about this one?
    https://www.amazon.com/Bosch-13953-O...ct_top?ie=UTF8

    About the EGR, I bought a new one, so I will replace it. I will do your test anyway, but if you say that it could not be the main cause of my problem...
    I´m trying to find a correct TPS to replace it too!
    Thanks!

  2. #22

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    Click image for larger version. 

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    Is this the remperature sensor?
    Looks pretty different to what I saw on the web.
    Also, it looks glued previously. Click image for larger version. 

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  3. #23
    Approaching 2 decades of DDing Box Panthers VicCrownVic's Avatar
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    Yes that is the engine coolant temperature sensor that the ECM uses to adjust fuel mixture. Definitely get that replaced.

    E1AZ12A648A or whatever compatible sensor that part number may have been superceded with.
    Vic

    ~ 1991 Mercury Grand Marquis LS "The Scab" - plenty of rot, summer DD
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  4. #24
    I'm an air-conditioned gypsy gadget73's Avatar
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    honestly I have never had a HEGO code that was actually because of a bad sensor. If it says its lean, usually it really is lean.

    If the engine isn't warmed up, you might get codes for these too. Same if the temperature sensor is bad or if the EGR is hanging open.

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  5. #25
    Beater gonna beat sly's Avatar
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    yeah... fix the ones that are obviously broken, like the temp sensor, reset the codes, and see what comes back. It takes longer to fix things completely, but it will get done that way without just throwing parts and money at it.

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