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Honda Accord 2.2 1996 surges up and down when warm

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Old Aug 6, 2020 | 08:10 AM
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Default Honda Accord 2.2 1996 surges up and down when warm

Hello!
I have problem with my Honda Accord 2.2 V-tec 1996, USA. Suddenly the engine stopped while driving. I replaced the spark plugs and that helped, but another problem has arrived. When the car is warm (~90 degrees), the engine starts to misfire. Sometimes car has "no power" and shuts down when starts. I tried to plug tester, but only error is lambda sensor, but this error has been there since I bought the car. I replaced temperature sensor, adjusted valves, cleaned the throttles, checked EGR, replaced the ignition switch, replaced the ignition coil, but any of these didn't help me. Any ideas how to solve this problem?
 
Old Aug 6, 2020 | 11:17 AM
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,,Have you checked the iacv ( idle air control valve )?? idle adjusting screw??
 
Old Aug 6, 2020 | 02:14 PM
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Yeah, I have, even decided to clean it.
 
Old Aug 6, 2020 | 04:44 PM
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I have been thinking what you stated, ( I replaced the spark plugs and that helped ) did the plugs looked like like car has been running too rich??
How long after you replaced the plugs did this new issue happen ? reason i ask is because you said you have a code for the Lambda sensor, this sensor monitors air/fuel ratio, sends info to ECU ,, if ECU riches the mixture, car might be running too rich when warm thus it might cause issues ,,,,
Just for the heck of it pull the plugs see if they look sooted or normal
 
Old Aug 6, 2020 | 05:08 PM
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When i replaced the spark plugs, the gap between electrodes in a spark plug was too wide. This issue happened immediately after replacing. Now the plugs look normal.
 
Old Aug 6, 2020 | 06:21 PM
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(This issue happened immediately after replacing plugs)
What plugs did you install??? NGK ZFR6F-11 ? Plug wires ok?,,if you have not done it yet you might want to check resistance on the plug wires
 

Last edited by nomad2020; Aug 6, 2020 at 06:23 PM.
Old Aug 6, 2020 | 11:16 PM
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Do you have an obd2 scanner that can read some live data?

Surging idle can be from air in your cooling system. When the engine is cold, open the radiator cap and make sure the radiator is full of coolant
 
Old Aug 7, 2020 | 08:55 AM
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Originally Posted by nomad2020
(This issue happened immediately after replacing plugs)
What plugs did you install??? NGK ZFR6F-11 ? Plug wires ok?,,if you have not done it yet you might want to check resistance on the plug wires
Yeah, I installed original plugs. The plug wires are also ok. I did check resistance and everything is ok.
 
Old Aug 7, 2020 | 08:58 AM
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Originally Posted by PAhonda
Do you have an obd2 scanner that can read some live data?

Surging idle can be from air in your cooling system. When the engine is cold, open the radiator cap and make sure the radiator is full of coolant
Yeah, I have an obd2 scanner that can read live data. When engine is warm, rpm starts to strugle between 400/900 rpm. I checked the cooling system, but there is no air and the radiator is full.
 
Old Aug 7, 2020 | 10:55 AM
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Let us know what your long and short term fuel trims do when the engine is warned up and at idle.
 



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