Question about 2002 Mercury Cougar

1 Answer

Air conditioner quits when idle and car revs

My air conditioning runs great when I'm running down the road but when I'm at stoplight or at an idle the air gets slightly cold but humid. It also usually revs high when I'm shifting. The air doesn't get cold again for bout 5-10 min bout the same time the idle returns to normal. I've been told one has nothing to do with the other but they almost always happen together.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

  • Mercury Master
  • 21,873 Answers

Is the radiator fan running when the ac is on ?

Posted on Jul 21, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

emissionwiz
  • 75744 Answers

SOURCE: rough idle

Have you had the throttle valve cleaned?

Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Posted on Nov 12, 2008

StormStrikes
  • 104 Answers

SOURCE: "check engine light flashing"

The flashing check engine light is typical of a misfire issue. There are two things I would do to start with.

1. Take the vehicle to an auto parts store like Autozone and have them hook up their scan tool so that they can retrieve stored trouble codes. Even if the check engine light is not on, they should be able to retrieve recently stored codes.

2. Do a complete tune up. New plugs, new plug wires, new air filter, new fuel filter if it has not been done recently.

If the parts store pulls the codes and they cannot tell you what they mean, post them up here and I will see what I can dig up for you.

Posted on Jan 02, 2009

warlock61
  • 659 Answers

SOURCE: Car not idling adn stalling when it is cold

sounds like the idle control vale is sticking when it is cold. It is located on the throttlebody right at the air inlet

Posted on Mar 01, 2009

  • 752 Answers

SOURCE: why would my 2001 mercury grand marquis stall when

check yur idle air control valve

Posted on Jan 26, 2010

  • 11 Answers

SOURCE: air conditioner 2002 mercury marquis

In the engine bay, there is a set of fuses by the battery. Pop open the fuse panel. There should be a set of relays. Check in your manual under "Roadside Emergenies" for the relays and you will find one for the A/C Compressor. The compressor normally checks out fine, it is a common problem that the relay goes bad. Swap the relay with a new one and you should be golden!

Posted on Apr 27, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Car shimmys while idles


the throttle body idle lever can wear out causing cars rpm to drop-chec gauge to confirm-wil be around 500------also motor mounts wear-need to test using emergency brake and watchn engine rise n fall

Jul 08, 2013 | 2002 Pontiac Grand Am

1 Answer

Quits running.


What is RPM,do you have gauge should be 750 to 800.at the idle.do you change air filter.Could be crankshaft sensor.

Feb 12, 2013 | 2000 Nissan Altima

1 Answer

Code says system running too lean Bank1 and at stoplights I have to put car in neutral or it will stall


Lean Bank1 can be attributed to a faulty oxygen sensor or by unmetered air entering the system. A comon problem with the protege is cracks in the plastic air intake hose after the MAF which sucks air in that is not registed by the car and thus make it run lean and idle poorly
.
Another comon problem causing rough idle is the EGR valve being stuck because of carbon deposits, this will usually throw an EGR related check engine light but not always.

Feb 11, 2013 | 2000 Mazda Protege

1 Answer

My 1995 Mustang GT won't run right!


Your problem is it is a ford,LOL:

Nov 03, 2012 | 1995 Ford Mustang GT

1 Answer

2008 pt cruiser problems. At idle with Air Cond on get frequent RPM drop. 50-100 RPMs. Withour Air Condition on car idles fine (no drop) Also can hear a single click sound when drop occures.


The click sound would be the air conditioner compressor engaging, the engine will slow down do to the additional load. If it idles rough you probably need to think about cleaning the throttle body.

Oct 04, 2012 | 2008 Chrysler Pt Cruiser

1 Answer

When I start the car it stays at 2000rpm for a few moments then drops down. I'll drive for a few minutes then put it in park and it revs up and down.


idle air control valve is bad replace it. at start up choke control runs till warm up while driving throttle opening controls engine at idle ,the idle air control valve.

Aug 01, 2012 | 2005 Chevrolet Aveo

1 Answer

My 1999 jeep will stop running while driving it


Hi, i have a 1999 jeep grand cherokee, 4.0 litre, had the same problem, quits running out of the blue, driving down the road, or sitting idling. starts right back up or takes some cranking to get it running. found out that the crankshaft position sensor was going bad, cost 40$ for the part, but had to have mechinac replace it due to it's location, hard to get at. jeep runs great now.

Jun 17, 2011 | 1999 Jeep Grand Cherokee

1 Answer

Air conditioner


Is the fan running with A/C on at idle? If yes try blowing out the radiator and condenser with compressed air.

Apr 08, 2009 | 1998 Saturn SL

1 Answer

1998 Pontiac Grand AM GT motor revs


it would not be an O2 sensor, period, they would never cause a high idle, have u had this checked for trouble codes? A sticking idle speed control air bypass can cause this problem as well as a throttle position sensor, but run the codes, Kragen does it for free was well as other parts stores.

Mar 10, 2009 | 1998 Pontiac Grand Am

Not finding what you are looking for?
2002 Mercury Cougar Logo

92 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercury Experts

yadayada
yadayada

Level 3 Expert

75744 Answers

fordexpert

Level 3 Expert

5495 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

Are you a Mercury Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...