20 Most Recent 1990 Mercury Cougar Questions & Answers


insert key and push a paper clip in the small hole in the little hole next to the key turn key slightly and remove works for me

1990 Mercury... | Answered on Sep 28, 2017


if it is ecm controlled it will have one
look next to the crankshaft puller behind the fan belt

1990 Mercury... | Answered on Oct 11, 2016


Have you tried checking the crankshaft sensor? This will happen when is gone bad.

1990 Mercury... | Answered on Oct 05, 2016


Sounds like you engines water pump is leaking.

1990 Mercury... | Answered on Aug 21, 2016


You'll have to replace the regulator/motor assembly with a new one if the mechanism was damaged, which sounds like it was. Plastic parts break on these systems. If it is snowing and you don't have the resources to replace it right now, try to tape some plastic over the window using duct tape. But, this is only a temporary solution.

1990 Mercury... | Answered on Oct 18, 2015


You haven't listed if it is getting spark.

Have you pulled a plug wire and checked?

1990 Mercury... | Answered on Jan 30, 2015


Most chargers have settings for different size and type of batteries and also have regulators to prevent overcharging. Don't buy the very cheapest, but the $60 (approx) units are good choices for most hobbiest uses.

1990 Mercury... | Answered on Jan 29, 2015


You can buy a kit with an adapter plug...easiest way to install a new deck.

Watch out when you insert the new deck into the original hole...wires pinch, short out dash, or lighting issues will occur if you are not careful

1990 Mercury... | Answered on Jan 28, 2015


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.

1990 Mercury... | Answered on Jan 28, 2015


#1 cylinder is misfiring ,or the ecu/pcm has detected the symptons, is the engine running poor ? check the plug , lead , coil pack for condition etc if the engine is running ok then just clear the codes and see if the code reappears in which case it could well be the ecu/pcm which will need further diagnosis

1990 Mercury... | Answered on Jul 01, 2014


Your honda dealership parts department can provide you with a print out of the location. There should be no charge. Ask them how much the ignition coil cost. They will be happy to provide you with a print out location of the coil, thinking that perhaps you might buy the coil from them later. And who knows... you might.

1990 Mercury... | Answered on Jul 01, 2014


Need to do some brake service

1990 Mercury... | Answered on Feb 22, 2014


This is usually a problem on the opposite side. The brake caliper is not moving when the brakes are applied or the brake pads are gone. Or the left side brake assembly is metal to metal.

You need to have someone put this car on a lift and check out the rotors and brake pads.

1990 Mercury... | Answered on Feb 20, 2014

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