help!!! deep puddle

[cjoven]

i drove into a deep puddle and took a lot of water into the engine. i have already drained and flushed engine.

problem 1. idle starts at 500 and after a few revs goes to the normal 900.

problem 2. when accelerating i stomp on the gas pedal and there is no acceleration the rpms drop slowly unless i release the pedal a little bit then it surges and accelerates.

problem 3. my oil pressure gauge jupms all the way to five and stays there until i turn the car off.

please any help

[mike944]

well, problem 2, and maybe problem 1 could be a throttle position sensor that got water in it, and isn't working correctly anymore. If you have an old-style analog voltmeter, you can easily test it. just find the output wire, it'll be the one that goes from 0-5 volts as the throttle is opened. open the throttle slowly, and if the needle "jumps" around at all, it's bad. it should move smoothly from 0-5 volts. You can do this with a digital voltmeter, but it's much more difficult.

Mike

[wolfrpi]

Its possible you cooked your engine. Do a compression check to see if everything is still within tolerances. If so, then it is likely an electrical problem.

The problem with 944s is that the air intake is prone to suck water. To avoid the problem you should drill holes in the airbox or get an AEM air-bypass valve.

------------------
Erick

86 951

http://www.pelicanparts.com/cgi-bin/pmpre/pm.cgi?action=display&login=aka_951

[mike944]

I had not mentioned that before, because when an engine sucks in water, it usually self-destructs. By this, i mean bent connecting rods, and damaged pistons. If is still runs, and doesn't make any horrible metallic noises, it's probably ok mechanically. But running a compression check certainly wouldn't hurt, and it's not really that difficult to do.

Mike

[cjoven]

engine seems fine no stange noise, everything sounds normal

could it be the computer?

[Bob's944]

Did water get on your floorboards too? If your computer got wet, it's probably your problem. Alot of time a hairdryer will fix that.

[cjoven]

yes it did all over the floor?

could the computer be damaged if we if so how can i tell?

[Bob's944]

I'd pull it out and hit it with a hairdryer until it's definately dry and see if it works.

[Pinseekers]

About ten years ago, I drove my Toyota 4x4 in to a swollen river and got water in the engine. My engine sputtered then stalled. I did not try to restart it. I was pulled out from the rear by another truck.
On the shore line I dumped the oil took out the sparkplugs and cranked it over trying to remove the water.
When everything was put back together, I tried to start the engine. It started with no problem. I used my truck for about 5 months with no problems. Then Memorial weekend came and we all went for a Colorado river run. I made it past Palm Springs when my # 2 piston shot out of the side of my block! Huge hole!
I took it back to the Toyota dealer and they couldn't figure it out (I didn't tell them about the water in the engine). I threatened to sue them because I was under the extended warranty. They hired an independent engineering firm to confirm Toyota's findings f Hydrolock. Sure enough, they found the culprit, a bent rod in # 2 and #3 and #1!!!
The moral of the story, engines do not like WATER! Ask a mechanic about the Hydrolock syndrome before you give it the all clear. Could cost you much more $$$ in the long run.


[This message has been edited by Pinseekers (edited 08-08-2001).]

[cjoven]

i dried the computer still same;
the oil pressure guage stuck all the way to top once i turn car on.

and when i put the accelerator all the way to the floor it revs to 3000 then goes down for a fews secs then back to 3000 over and over when i hold the accelerator down.

[mike944]

Does it blow alot of black smoke while it is doing this?

What if you hold the gas down, just slightly back from full throttle?

It still sounds like an electrical problem. Those can be a ***** to track down, even by those with a good knowlege of automotive electrical systems.

Mike

[cjoven]

there is no smoke.
when i ease up a tiny bit on the pedal the rpms increase steady normal only when gas pedal to the floor that it does the problem.

[mike944]

I still think it is the throttle position sensor, or the computer is fried. If such a small change in throttle position makes that signifigant a difference, i can't think of anything else it might be.

Mike

so, just how deep was this puddle. If you got water into the car, you got a lot of electrical things wet and probably have spiked your computer. Time to call your insurance agent!

[ae1969]

....now that was a puddle you drove thru and not a lake........

....I did see a 968 with submarine hardware in one of the postings.....you weren't trying to retro-fit your car with some flippers.........

...check compression and computer.....

think worst case scenario....and you will probably be right.....

[cjoven]

even stranger today, on the way to work it was doing the same thing but on the way home it was running fine, I would slam the gas to the floor and it didn't surge and rpms didn't drop, it only did it once when i was gunning it in first then shifted to secondit began to surge but just once.

could it be my spark plug wires and distributor if they are really old or if it got wet?

where is the throttle position sensor? could the sensor also effect idle, when i start the car it is about 700rpm then rev the engine 2 times it goes to normal 900 rpm?

[cjoven]

it is back again i put it in neutral and put the gas pedal to the floor it goes to about 3000RPM then drops then goes back up to 3000RPM and never past it until I ease up a little bit on gas pedal????