2005 Chevy Truck flooded

Tiny
AUSTINSANGEL
  • MEMBER
  • 2005 CHEVROLET TRUCK
  • V8
  • 4WD
  • AUTOMATIC
  • 22,000 MILES
I flooded my truck in the lake over my hood and the exhaust was under water when my truck died, What do I do?
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Monday, July 28th, 2008 AT 7:05 PM

14 Replies

Tiny
BLACKOP555
  • EXPERT
Well, first of all does the vehicle crank? What would be really bad is if it got water in the manifold and you went to crank it and got hydro lock.

First thing to do is clean and dry plugs, plugwires, coils sensors and try to start it
anything?
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Monday, July 28th, 2008 AT 9:44 PM
Tiny
AUSTINSANGEL
  • MEMBER
It turns over and even sound good when it does but the lights and locks are still going crazy and it took a lot to get it to this point like draing gas tanks pulling everything that oculd get water at all! This is so sad but the only problem now is the electrical and I dont know if I should buy a new computer or try the fuse box first?
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Wednesday, July 30th, 2008 AT 9:00 AM
Tiny
KLSHIEL
  • MEMBER
Well water and electrical don't mix. Obviously. But the computer is the last thing you want to condem as bad. Computers are quite resiliant and rarelly fail even after some severe punishment, and if you put a new computer in a truck that fried the old one without fixing what fried the old one you will just go in circles. The wiring fuses connections and odd components need to be dried and checked before changing the computer.
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Wednesday, July 30th, 2008 AT 9:24 AM
Tiny
AUSTINSANGEL
  • MEMBER
Thank you I have bought all new wires that I think could have got wet and went ahead and bought a new fuse box * it was standing in water for about 20 min. And then I lifted the hood so it could dry out* I am on my way to replace this stuff Wish me luck *my poor baby*. Never let stupid people drive your new truck :(!
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Wednesday, July 30th, 2008 AT 2:07 PM
Tiny
BLACKOP555
  • EXPERT
Well
first check for spark with a spark test can cut down the possiblities in half!
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Wednesday, July 30th, 2008 AT 9:12 PM
Tiny
AUSTINSANGEL
  • MEMBER
Ok. Spark plugs are good, fuses are good *not sure about fuse box how do u check that?* All the water is out, its got fresh gas, oil, tranismision fluid, rear end *all the fluids have been replaced with good*, put in a new battery, my big problem now is that when I hook up the battery my door locks lock and unlock and my head lights go off and on without putting my key even in it *as soon as the battery gets hooked up* It will turn over now and everything else this is such a big headache I had to let someone drive it an hour after I got it *b4 I made it to the insurace comp.* THANX so much 4 all of yalls help!
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Wednesday, July 30th, 2008 AT 11:59 PM
Tiny
BLACKOP555
  • EXPERT
I hope your doing rear passanger side also?

The vehicle needs 3 things to start.
Spark, fuel, compression.

Since its a newer truck I wouldnt suspect compression is bad.

And now that its been throughly soaked with water next step would be to test for spark on all spark plug cylinders with a spark plug tester NOT grounding out a spark plug.
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Thursday, July 31st, 2008 AT 8:41 AM
Tiny
KLSHIEL
  • MEMBER
Well The first thing I would do is eliminate the door lock and head light problem, you don't want it killing your new battery but you need the battery hooked up to trouble shoot the engine. Try pulling the fuses for the head lights and door locks. This should kill the system. Remember you will need to fix this later and it may still drain on your battery so disconnect it over night. Then as blackop555 said check your spark and fuel systems. You probably already took care of this, but a good way to get all the moisture out of the cylinders is pull all the plugs, turn it over for a second and let it set like that for a few hours before putting the plugs back in. By the way I did the same thing to my Ford Ranger back in high school, after I got the cylinders dry it fired right up.
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Thursday, July 31st, 2008 AT 1:49 PM
Tiny
AUSTINSANGEL
  • MEMBER
Ok I know this sounds like a stupid Q. But what is the Coils Sensors and what does it control?
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Thursday, July 31st, 2008 AT 2:52 PM
Tiny
KLSHIEL
  • MEMBER
He meant Coils and Sensors. By coils I think he was refering to ignition coils which should be ok as long as the connections aren't wet. You have sensors all over your truck, but only worry about the ones that effect whether or not the engine runs. The IAC idle air control. MAP or MAF sensors which detect how much air is flowing. The crank and cam sensors should be ok since they are sealed. If you are getting spark and fuel to the motor the sensors are working well enough to get the motor running.
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Thursday, July 31st, 2008 AT 3:36 PM
Tiny
AUSTINSANGEL
  • MEMBER
Ok now when I hook it up it tells me that some of my sensors are messing up but im not real sure where to find them or where to start looking *im so sorry to keep bugging yall and tanx so much for the help!*
and yes they got wet too! :(
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Thursday, July 31st, 2008 AT 4:09 PM
Tiny
BLACKOP555
  • EXPERT
Unhook all but cam and crank sensors, if they get moisture in them and short out they will throw a false code, but the pcm will still accept it as correct!

And by coils I meant ignition coils they cannot get wet or they will not work dry them out and see how it goes. Just check and dry all you can.
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Thursday, July 31st, 2008 AT 4:22 PM
Tiny
KLSHIEL
  • MEMBER
Try to be more specific. I don't know exactlly where every sensor is on your engine, but if you let me know which sensor your looking for I can give you some pointers for looking for it. Are you getting Fuel and Spark yet?
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Friday, August 1st, 2008 AT 8:34 AM
Tiny
BLACKOP555
  • EXPERT
Yes, we need those answers!
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Friday, August 1st, 2008 AT 8:53 AM

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