I have a 2001 Honda Odyssey that was having trouble starting. It would start but seemed to be slow to start. I took it to my local Auto Zone and then as a double check took it to my local Advanced Auto and had the alternator, starter, and battery checked. On both occasions, I was told it was a bad battery. Due to the cost difference, I took my car to Wal-Mart and purchased and battery and had it installed. When I picked up my car the car seemed to not be driving as it usually did. The brakes were difficult to press and stop the car and the gas peddle was easier than usual. Once I got the car home and turned of the ignition and removed the key I realized the car was still powering down even after the key had been removed from the ignition. I restarted the car to see if it would do it again and discovered the engine was idling at 2500 rpm and it continued to climb to 3000 rpm and held steady there. I then turned off the AC and radio and it climbed to 3500 rpm and remained there. Other than a battery replacement there were no other problems with the car. Can you tell me what happened and what I can do to fix it?
This only applies if you have no error codes or warning lights.
Replacing the battery on older Hondas will sometimes make the computer forget how to idle. You ned to do a "idle relearn procedure".
Car off and cold.
Open hood.
All lights & accessories OFF.
In PARK.
Key in ignition turn to ON for 2 sec.
Start as normal.
Idle at 3000PRM for 5 min,
Keep the car running
Foot off gas --> go to front of car.
Let run for TWO radiator fan on/off cycles (maybe 5 min)
Turn AC for 5 min.
You are done!
Most place's that replace batterys hook up a alternative power supply ! Don't lose radio pre sets no other computer problems etc... Battery Disconnect or Replacement Problems
This is characteristic of a reset to the EMC (Engine control module). If the power is removed from the car during battery replacement the engine/driving parameters are reset back to the original factory settings. Running the car for about 10 to 15 minutes about 8 miles will begin the relearning to the idle.
Hope this helps?
PCM Idle Learn Procedure Honda Accord CarTrek com
SOURCE: 1999 honda accord idle problem:
Is the engine light on, if so have them read? Take a look the charging system (see if it is above 13volts and below 16volts), see if the gas cap is on firmly and the o-ring on it is in good shape, look at the cars maintenance history and see how long its been since the last complete tune-up. If there are no codes recorded then it would probably be a mechanical issue, Look at coils, fuel pressure, timing, and injectors. If you need more specific info, just let me know, Good luck.
SOURCE: 2000 accord v6 engine idle goes up and down after start up
I am having the same issue after I changed my battery today. Upon doing some research it seems like there is some way of aiding the computer with proper idling. I haven't done it yet... plan on going to the dealership where I got the battery, but from my understanding you disconnect the negative line from the battery for a few mins, reconnect, and then apply gas at 3000 rpm for a few mins until the fan kicks on. AND this will help reset your car to proper idling. Good luck
SOURCE: 1991 Honda Accord won't start
Could be the igniter inside the distributor (unless you have an external coil). Look on your distributor to see if there are 5 wires leading from it. If there are, you have an external coil that is likely bad... If you have only 4 wires coming from your distributor it is most likely the internal ignition inside the distributor ($50.+). AS SOON AS YOU GET IT STARTED CHANGE YOUR OIL. Your fuel pump has loaded your cylinders with fuel and it has probably leaked down into your oil pan making your oil thin and mixed with gas.
SOURCE: 97 honda accord wont start clicking noises
clean your battery terminals parobally have corrision on them
SOURCE: 1986 HONDA ACCORD IDLES TOO HIGH 3000-3500 RPM
It may be caused by a vacuum leak, make sure to check all your hose for cracks and/or hoses that may have popped off
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