Honda Accord (1990 - 2002) Includes 1997 - 1999 Acura CL

97 accord does a popping sound when its on idle

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Old Apr 2, 2013 | 09:03 PM
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Icon2 97 accord does a popping sound when its on idle

everytime i heat up my car in the morning after 5 mins idle it does a little popping sound. i have an exhaust leak could that be the problem?
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Old Apr 3, 2013 | 06:27 AM
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That "popping" sound is a backfire. Have you done anything recently to the car? What kind of engine and drive train?


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Old Apr 3, 2013 | 02:53 PM
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Default Re: 97 accord does a popping sound when its on idle

is the backfire a bad thing? anything like what? and its a 2.2
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Old Apr 3, 2013 | 04:19 PM
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Yes backfiring is bad. You run the possibility of blowing a hole in a piston by backfiring.

What i mean is have you don't anything to it recently (ex. Timing belt, water pump, spark plus, plug wires, cap, rotor, fuel filter) and if so did the backfiring problem occur after you did such maintenance or was it prior.

What i am asking for is when/why/how did this problem occur or become known?

Also.... Did this happen after the 120mph thing?


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Old Apr 3, 2013 | 04:19 PM
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Have you done anything to it recently. Sorry auto correct sucks ***.


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Old Apr 4, 2013 | 09:09 AM
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Default Re: 97 accord does a popping sound when its on idle

no i havent did anything recent 2 it. i just bought the car a month ago so i guess it came with the problem not sure but i guess ima have to change all of that
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Old Apr 5, 2013 | 06:45 AM
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Default Re: 97 accord does a popping sound when its on idle

Do you know when the timing & balance shaft belts, water pump, and valves were last serviced?

Check the physical timing of the engine and the electrical components in the ignition system. Also have your timing belt and valve clearances inspected.
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Old Apr 5, 2013 | 07:14 AM
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Like ghost accord said. Check your physical timing. When you change the timing belt, water pump and tensioner pulley, make sure you use gates or go to Honda and get a OEM belt.


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Old Apr 5, 2013 | 07:26 AM
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Default Re: 97 accord does a popping sound when its on idle

no i dont know the last time they have been serviced ima just change all of them. are those the only reasons it is backfiring?
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Old Apr 5, 2013 | 07:50 AM
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Default Re: 97 accord does a popping sound when its on idle

Originally Posted by jaygood2go
no i dont know the last time they have been serviced ima just change all of them. are those the only reasons it is backfiring?
Those are probable reasons.
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Old Apr 5, 2013 | 08:32 AM
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Default Re: 97 accord does a popping sound when its on idle

Originally Posted by jaygood2go
no i dont know the last time they have been serviced ima just change all of them. are those the only reasons it is backfiring?
Those are some probable areas to search.

You could also have a cracked/broken exhaust valve(s)

You could have a compression test and/or leak down test performed on the engine to see if that might be the case. Or if you know someone with one of those small engine inspection cameras. You could have them go in and take a look.
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Old Apr 6, 2013 | 10:49 AM
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Default Re: 97 accord does a popping sound when its on idle

Originally Posted by GhostAccord
Those are some probable areas to search.

You could also have a cracked/broken exhaust valve(s)

You could have a compression test and/or leak down test performed on the engine to see if that might be the case. Or if you know someone with one of those small engine inspection cameras. You could have them go in and take a look.
i think its my exhaust cuz i have an exhaust leak
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Old Apr 6, 2013 | 11:32 PM
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Default Re: 97 accord does a popping sound when its on idle

Check and see if the iacv and iat sensor connectors are swapped. Also check the map sensor and tps sensor connectors if perhaps they're swapped too.

Yes, it can be an exhaust leak too if the exhaust leak is before the oxygen sensor. You will need to fix the leak and replace the oxygen sensor with a Denso brand.
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Old Apr 7, 2013 | 07:14 AM
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Default Re: 97 accord does a popping sound when its on idle

Originally Posted by GhostAccord
Do you know when the timing & balance shaft belts, water pump, and valves were last serviced?
x2!

Mine did that after I redid my timing belt. It was couple tooth off, and every time I warm it up, it would lightly pop here and there. Re do my timing belt again, and no more popping sound.
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Old Apr 7, 2013 | 04:29 PM
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Default Re: 97 accord does a popping sound when its on idle

and my check engine light is on after today. could be the backfiring?
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Old Apr 8, 2013 | 03:05 AM
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Default Re: 97 accord does a popping sound when its on idle

pull the code
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Old Apr 8, 2013 | 06:45 AM
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Default Re: 97 accord does a popping sound when its on idle

I can do that myself? Don't I have to go to a shop so they can give me the code?
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Old Apr 8, 2013 | 08:47 AM
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Default Re: 97 accord does a popping sound when its on idle

Yes you can!

The OBD2 96/97 Accords have a self diagnostics procedure. Try this link - https://honda-tech.com/forums/showth...ht=diagnostics
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