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I have a 1987 mecury grand marquis 2 owner 83 thou original miles recently my car started cutting off now when I crank up it cuts off. I have to hold the gas for about 10 min for it to stay crank when I drive I can put the pedal to the floor and it move like a turtle on the highway I can't get past 45mph and when I go uphill car slows down. Already change plugs distributor cap and rotor switch and fuel filter even tried adjusting the timing.can some one please help with this problem thank u sincerely.Dormonique

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1 Answer

Exhaust Converter is broken up inside & blocking the exhaust
out & thus 45 mph

Posted on Dec 04, 2012

  • 8 more comments 
  • Dormonque Fields Dec 04, 2012

    thanks for your response I took the car to a shop and they said the cleaned the catyltic coverter

  • Anonymous Dec 04, 2012

    Can't clean an exhaust converter. If it is 12 years old it has to go

  • Anonymous Dec 04, 2012

    Try another shop that has been there with same owner for 25 years

  • Dormonque Fields Dec 04, 2012

    my car also has four conveters do i get all changed or just the two big converters

  • Anonymous Dec 04, 2012

    Only 2 converters & maybe two resonators. The converters have to fail a test & then you replace both What kind of a lame shop are you going to?

  • Dormonque Fields Dec 04, 2012

    was a shop in rock hill sc he said they were clogged he took a screw driver and hammer and beat on something and said that should of done the job but did'nt

  • Anonymous Dec 04, 2012

    That is a butcher not a mechanic To loosen the inside honey comb may block exhaust flow even more & you won't have injector control or pass inspection. Change both converters & get a different shop. I know your in NC but they have to have some knowlegable folfs there my nieces husband has his own place & 10 years at a ford dealer before

  • Dormonque Fields Dec 04, 2012

    ok thank you for your help really apprciate it i will change them and let you know the out come thsnks alot

  • Dormonque Fields Dec 05, 2012

    changed both catalytic converters car still doing the same thing

  • Anonymous Dec 05, 2012

    Explain everything it is not doing correctll in detail & do you not have a repair shop trying to resolve things

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6 Suggested Answers

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michigan man
  • 3533 Answers

SOURCE: car have touble starting and staying start

it could be a bad belt or signs that the fuel pump is getting weak put some STP gas treatment in the gas tank make sure you have at least a half a tank of gas before you do this ask yourself when was the last time you changed the fuel filter

Posted on Jan 20, 2009

MrScary66613
  • 1990 Answers

SOURCE: car want crank over

This is Caused by the Fuel Pump. If you remove the Fuel Pump relay and it will try to Crank, You have a Bad Fuel Pump. I do Believe that the Fuel Pump is located inside the Fuel Tank on the Sunfire. Not an easy Repair But, Necessary

Posted on Jan 24, 2009

  • 1 Answer

SOURCE: 1992 Chrysler LeBaron 3.0 L.

the owner probably rerouted the fuel line because like my 92 chrysler lebaron v6 3.0 the fuel lines keep seeming to come off and the clamps always break. I have replaced the clamps 5 times in a month and replaced filters 2 times in 2 months. The only thing i could think of is that your fuel is being cut off possibly because there is no filter to clean all the junk out. Try putting a fuel filter on and see if that will work

Posted on Feb 09, 2009

  • 6 Answers

SOURCE: Car dies at random moments

I just had this problem and replaced the camshaft sensor, crankshaft sensor, and coolant temp sensor. i replaced these items because of high mileage. try these but first check your relays located under the hood on the passenger side. sometimes they get hot and fail.

Posted on Jun 16, 2009

matney68
  • 426 Answers

SOURCE: 1991 Chevy Camaro RS engine cut off while driving on the freeway.

well, need to check fuel pressure, spark. Ignition module in distributors go out that is common

Posted on Jun 21, 2009

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