Question about 1990 Mercury Cougar

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When I got into start my 1990 Cougar LS there was no power But when I had someone come jump me I got power but the car would not turn over.

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Chris Ward

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Check the battery terminals they could be corroded Check the solenoid it is between the battery and the starter and check the starter terminals and starter.

Posted on Feb 12, 2011

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Victor Albright

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It sounds like your battery is/was completely drained. Jump starting will often fail to immediately start a car with a "flat" battery.

You should either charge your battery for at least 6 hours, or have somebody jump it again, but leave their car running and allow your battery to charge for about 10-15 minutes before trying to start your car again.

Posted on Feb 12, 2011

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cgoff27

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Sounds like you have a bad starter and a weak battery

Posted on Feb 12, 2011

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3 Answers

1990 cougar ls will crank but will not start


You haven't listed if it is getting spark.

Have you pulled a plug wire and checked?

Jan 27, 2015 | 1990 Mercury Cougar

1 Answer

1990 cougar ls will crank but will not start


Since you are near a computer, you can look up photos of the inertia switch and fuel pump relay. On the photos online I see carpeting which is probably from the trunk as your interior would have color. There is a red reset button built into the Inertia switch. It is not broke, but is working to prevent a big fire. Since you were not in an accident, it activated with any bump. It takes a certain frequency which can be from a doorslam or trunklid closing with excess force.


All that needs to be done is to push the reset button to restore power to the fuel pump.

Jan 27, 2015 | 1990 Mercury Cougar

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Where are the grounding wires located on a 1990 Mercury Cougar LS


There will be several. One from the battery to the engine or frame. One from the engine to the hood. You have ground wires from the headlights to the metal frame. In other words there are many. The most important is the battery ground.

Apr 24, 2012 | 1990 Mercury Cougar

1 Answer

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Make sure the battery is fully charged. Try jumping it or using a jumper box.

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Jump started a friends car, then the power steering quit. could it have blown the the fuse to the electrontic power steering?


Yes it could, alway jump someone with your ignition off. You can charge them up with you car first but turn your ignition off before they turn theirs on. That way if they have a short it doesn't affect your system.

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1 Answer

I started my 2004 lincoln ls and turned it off.. 10 minutes later I turned the key over and everything powers down when I try to start.. I tried to jump it and nothing happens.. Please help


Does it click when you try to turn it over? If so it sounds like a stuck/bad starter tap the starter with a hammer while someone tries starting it.

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I can't find a free tech manual for my new car.


most online services charge fees , or try manuals at local library, print books

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