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Discussion Starter · #1 · (Edited)
I would like to thank everyone in advance to take the time to read this post and please suggest any input if you had a similar experience.

So it all started after I seafoamed my 2005 RSX type s. I poured 1/3 in oil, 1/3 in gas tank, and 1/3 in the vacuum line running off the intake manifold. After pouring all of this seafoam my car did not produce that white smoke like every other car does after doing a seafoam, and yes the car was running and didn't die while I was inserting seafoam via the vacuum line. I ran the car for a while, I even took it out for a drive but no smoke as if I did not insert any seafoam. The car was running fine. I came home after an hour did an oil change and changed spark plugs. 2 days later it rained and it was hot and humid. I was ready to go to work but my car would barely move. It kept jerking on 1st and 2nd gear and didn't wanna move forward. Check engine light went off for Bank 1 sensor 1. I just parked the car and waited for next day to try. Next day was dry and sunny. The car started with no problem but it was still hesitant. I revved the rpm couple times and was able to drive. The more I drove the less hesitant it became. Eventually, the check engine light went away and the car was driving normal. Then it rained again and the same scenario all over again. I thought If I replace the O2 sensor it would fix the problem but it did not. I replaced both bank 1 sensor 1 and bank 1 sensor 2. (primary and secondary). I was going through videos on youtube, people suggested to clean out the Idle Air Control Valve and that fixed the problem for a lot of people but not me. I took out the throttle body cleaned out the IACV but nothing has changed. My car still hesitates when it rains, the check engine light goes off again for bank1 sensor 1 even after changing the o2 sensor and if I try to drive while its wet it makes a horrible sound and doesn't want to move. If I rev really high it goes but then as soon as I change the gear it feels like its gonna stall on me. I have to wait until weather dries up before I can start again. At this point, I'm running out of clues. I have done everything possible to fix this issue. I feel like there is a leak somewhere that sets off my computer where either my o2 sensor doesn't send signals or there is just carbon build up and clogged something after using the seafoam. Since that carbon really didn't come out of the car initially. I hope someone can help me with this. Thanks for your time.
 

· Past Driver’s Ed
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Saw your post and I’m still scratching my head trying to figure it out. Sounds like your on the right track - you basically have fuel, air, spark, and the ECU. Although Seafoam is a good product, I'm not a believer in using it as a liquid fixer. I agree with you that it could have upset the O2 sensors or spark plugs but you changed both. It's possible that it may of reacted with something in the gas tank like varnish which may have affected a injector(s). But the injectors don’t care if it’s humid outside and will perform the same in both conditions. Does it seem like all the cylinders are firing? Not under load, does it run smoother above a certain rpm? If you sucked the Seafoam into the throttle body using the vacuum hose, I wonder if you didn't aggravate one of the throttle body circuits which may require a little more extensive cleaning.
 

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Discussion Starter · #3 ·
Saw your post and I’m still scratching my head trying to figure it out. Sounds like your on the right track - you basically have fuel, air, spark, and the ECU. Although Seafoam is a good product, I'm not a believer in using it as a liquid fixer. I agree with you that it could have upset the O2 sensors or spark plugs but you changed both. It's possible that it may of reacted with something in the gas tank like varnish which may have affected a injector(s). But the injectors don’t care if it’s humid outside and will perform the same in both conditions. Does it seem like all the cylinders are firing? Not under load, does it run smoother above a certain rpm? If you sucked the Seafoam into the throttle body using the vacuum hose, I wonder if you didn't aggravate one of the throttle body circuits which may require a little more extensive cleaning.
Thanks for responding, Ya I wish my friend had told me before I used it. My brother had an s2k and it worked fine on his so I figured I give it a shot. Didn't know I would end up like this. Like you said If it's the injector they would act up all the time right. All cylinder act same way with humid and rain. So if I start the car and take off, it runs fine but then as soon as I change gear it loses all the power and acts up, and this is only when its wet or humid. No issues in dry condition. So like right now I have no problem, no engine light everything runs smooth, but I know the minute it rains and its hot it will act up. Yes so I did change both of the sensors. Also when the check engine light goes on and it throws P0137 code, it also includes low voltage to sensor. So I was also thinking could it be that the wires are being short in rain? but it's a new sensor and no wire are open. I pulled the whole throttle body out and cleaned it with carburetor cleaner and also cleaned IACV while I was at it.
 

· Past Driver’s Ed
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Thanks for responding, Ya I wish my friend had told me before I used it. My brother had an s2k and it worked fine on his so I figured I give it a shot. Didn't know I would end up like this. Like you said If it's the injector they would act up all the time right. All cylinder act same way with humid and rain. So if I start the car and take off, it runs fine but then as soon as I change gear it loses all the power and acts up, and this is only when its wet or humid. No issues in dry condition. So like right now I have no problem, no engine light everything runs smooth, but I know the minute it rains and its hot it will act up. Yes so I did change both of the sensors. Also when the check engine light goes on and it throws P0137 code, it also includes low voltage to sensor. So I was also thinking could it be that the wires are being short in rain? but it's a new sensor and no wire are open. I pulled the whole throttle body out and cleaned it with carburetor cleaner and also cleaned IACV while I was at it.
In my past with other cars, humid related issues were always related to worn electrical components. Still odd that it only acts up when it's humid out - you just added Seafoam and it should have only affected items that it came in contact with. Besides fouling the O2 sensors (your gas is still mixed with it), the P0137 code normally points to exhaust leaks located near sensor, inappropriate fuel pressure, faulty fuel injectors, and intake air leaks. Sorry, but I give up. Working in Chicago maybe we will cross paths one day.
 

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Discussion Starter · #7 ·
In my past with other cars, humid related issues were always related to worn electrical components. Still odd that it only acts up when it's humid out - you just added Seafoam and it should have only affected items that it came in contact with. Besides fouling the O2 sensors (your gas is still mixed with it), the P0137 code normally points to exhaust leaks located near sensor, inappropriate fuel pressure, faulty fuel injectors, and intake air leaks. Sorry, but I give up. Working in Chicago maybe we will cross paths one day.
Yes humid or if I'm driving through a storm. My short ram is up so high, I highly doubt any water is going in through there. I have refilled my gas a few times already so I guess I'm good there. If there was an exhaust leak I should be hearing a louder sound though. Hope I can figure this out sooner than later. Thank you for your time. Yes, hope to catch you someday. I work in Melrose Park so if you're ever around the area feel free to drop a message.
 

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Get a spray bottle and mist your electrics and see if you can duplicate. Any chance you are dropping a cylinder when wet and its stumbling that way. Some electrics can find a path to ground when the moisture rises.
 
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