Question about 2002 Mercury Cougar
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.
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Posted on Jan 02, 2017
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
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
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
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