Question about 1997 Mercury Cougar XR7

2 Answers

The fuel pump was replaced and since then the car has run very badly. Loss of power, backfiring, long cranking before starting. Had a complete tune-up done. Still the same problem. what could it be? Nelson

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  • neaton586 Sep 28, 2010

    Thank you. I should have added that this happens after I have drive the car for a few miles and the engine is warm. When I first start it will crank longer then start but I can drive it a few miles. After that is when all heck breaks loose. Is that still a fuel filter problem?
    Nelson

  • neaton586 Sep 28, 2010

    Yes it is. It started flashing when I lost power and the car started backfiring.
    Nelson

  • neaton586 Sep 28, 2010

    Ok, I will try to get it there. When it shut down yesterday I was able to re-start it after a long crank but the engine had no power and was backfiring. I did manage to hobble it to the side of the street where it sits now. I am afraid that it may not make it to the auto zone and leave me high and dry in the middle of the road.
    Nelson

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Yes it can be fuel filter problem.If the filter is clogged then it will reduce the flow of fuel after some time of driving and this problem occurs.Remove the filter and clean it then reconnect and check.If still the same problem get it replaced. Check out.Keep updated.Thanks.

Posted on Sep 28, 2010

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When you change a fuel pump it is always a good idea to change the fuel filter shortly after. What happens is the tank has to be dropped to change the fuel pump. When this happens it stirs up debris on the bottom of the tank. The new fuel pump will **** up the debris and plug the fuel filter up. Another thing that it could be is the wrong fuel pump was installed. This doesn't happen very often, but it does happen. Your fuel pressure regulator also could be causing the problem. I would start by changing the fuel filter. This is the cheapest and most common problem.

Posted on Sep 28, 2010

  • Rodney Clark
    Rodney Clark Sep 28, 2010

    I would for sure change the fuel filter. It is part of the problem. Usually when an engine starts running bad when the temperature comes up is usually a coil pack problem. Is your check engine light on?

  • Rodney Clark
    Rodney Clark Sep 28, 2010

    Take the car to the closest Autozone. They have a scanner that they will hook up and tell you what codes you need to figure out exactly what is going on. It is free for them to diagnose the problem. Usually when the check engine light flashes, this means urgent. So take it in and let me know what the codes are. This will make it a lot more pin point on diagnosing the problem.

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