Ok, a few weeks ago we had some nasty weather here in East Tennessee (couple of small tornados, severe lightening, high wind, and flash flooding). I took my 3.4L swapped T4R to pick my minions up from a church function in the middle of this mess. I ran over 3 trees just getting out of my neighborhood. Anyway, it was raining so hard that I could barely see past the bumper of my truck; so I was driving slow, as I came around a bend in the road that has a history for having some flooding issues. I wasn't too worried, my air intake is practically 4 ft off the ground. But as I came around the corner, the wave that came off of my tires was up in front of my headlights. Now, about half way through this area, the truck developed a miss. I pushed on, and pulled out of it, but the truck continued to miss. I got to the church, got my kids and started for home. More rain, more hail, and more flooded streets. The truck got me home. I let her dry out for a couple of days, and removed the soaked air filter (no box, just a $20 K&N style), and saw a few drops of water headed down the intake tube. So I figured that I had fouled out a plug or two. Those have been replaced and no cure. Got it down to Autozone to have the codes read, and multiple cylinder misfire, and crank position sensor (they were too busy trying to sell me one to tell me the exact code). So I came home and pulled the plug on that sensor and dumped more water out of the plug....


SO! Will it dry out? What else can I check? I tried blowing it out with air, and starting again, with no change. The truck runs, but doesn't feel right at idle and coughs and spits and sputters trying to drive and pull a load. It also smells like the cat is stopped up. Help. I need this truck running as a back up.

 

Any chance you got water in your fuel tank?

 

Exhaust blowing any smoke? What did the plugs look like?

Last time I had water splash up over the headlight, it cost me a head gasket.

 

Fact of life if you have these newer engines you need at least a code reader and should have the FSM for the diagnostics .

Without the code or codes you are chasing your tail.

I would also look at the MAF sensor, the igniter, the crank sensor

Is it possible you got water into the ECM??

If you have the ECM mounted on the right door post like some do with the plugs on the top .

I bet Water damage to the ECM I am on my 3rd one till I moved it to a Horizontal position under the heater box

Will it dry out if you are real lucky I am about to send mine out to be rebuilt.

Good luck.

 

The inside of the cab never saw water. I don't know how deep it was, but the air filter was wet; but the rest of the engine bay was relatively dry. I don't have the inner fender plastic that goes on the pass. side, and can understand how water was able to splash up on it. According to https://www.yotatech.com/forums/f128...e-codes-76363/ there are only 4 codes pertaining to the crank sensor.

The plugs looked fine; no gunk, soot, or other nasty surprise like I had been expecting.

The exhaust has no smoke. Looks like a new engine running.

I really doubt that I got water into the fuel...but it might be possible.

 

Mine never saw any water that I could really see or feel.

Good luck in any case!!

 

The first 2-3 minutes of the video show most of the storm, the rest is just my boys jabbering.

[YOUTUBE] [/YOUTUBE]

 

seems like you may need to pull some sensor plugs and blow it all out with compressed air. A wet tps will run like crud.

 

Any progress on this??

I could see the MAF sensor getting wet.

Unless your wire harness was really damaged and someone really messed up the plugs to the sensors they are all water tight.

Now left underwater in the pond for a few days might cause water to get where it shouldn`t be.

 

I once pressure washed my 3.4 engine bay and got water down in the spark plug wells. This caused a grounding of the spark plug wires between the extension and the head well and I could not fix the misfire until I put new plug wires on it.

 

Did it ever dry???

Did it start to run and not keep throwing codes??

 

Not got back around to it yet. I started getting pressured into replacing the head gasket on my Civic instead of "wasting time" on that truck. Not happy about it, but I've got to keep the peace.

I have removed the crank sensor, and it's been sitting on a shelf in a dry garage for about a week now. If I get the chance tonight, I'll stick it back in and see how she runs.

 

Ok, I put the old crank sensor back in and drove it around the block to no avail.

I then took it back to Autozone and had the codes pulled again:
P0300 Multiple cylinder misfire
P0301 Cylinder 1 misfire
P0302 Cylinder 2 misfire
P0303 Cylinder 3 misfire
P0306 Cylinder 6 misfire
P1300 Igniter circuit malfunction
Possible cause: Open or short circuit condition
Check CKP sensor output
Repair cylinder misfire condition
Failed igniter

Soooo, it looks like I will be replacing the CKP when payday rolls around.

 

We see who is in charge now!!

Good luck

 

was this you?

 

Felt like it driving through that storm.

 

I hate that when those kids move the High tide markers

 

Nothing about who's in charge....except the bank. Been remodelling and trying to get my Civic back on the road, and keep my Subie going. I'm being nickel and dimed to death.

 

Just a short update. Got the crank position sensor replaced and no change in how it runs. I need to get it back down to AZ and have the codes ran again (I need my own code reader). I'm also researching how to bench test my coil packs to make sure they're fine. IF I wind up needing a new set, I'll buy new ones (Yota part#: 90919-02212, not going with junk) and put them on the wife's Limited, and move hers over to my rig. I'm still suspicious about the wiring harness wicking up moisture, so I'm probably going to the pull-a-part Thursday afternoon and cutting out the wiring and plug I need.

Add to this the fact that the brand new, low-profile tires I just put on my Subie got chewed to hell by the cheap CL wheels (tried to save some money) and I've had to replace 2 of these 40 series tires.....

And I got the Honda put all back together Sunday afternoon, and started it. It ran great...for about 30 seconds and made some God-awful racket and died. Won't restart.

I told my wife back in June that we should have just bought a new car....

 

I still lean toward your ECM getting soaked I hope I am proved wrong.

Good luck!!