View Full Version : Help for a Moron

09-01-2007, 10:19 PM
Hi Guys,
Here we are on the big weekend and I shut down on High temperature. My 1994 Prostar went to idle while I was returning to my marina. Thank God it did as the temperature was in the 230 range.

I have in inventory a new cold water impeller, which I replaced last year. What else could cause this problem? The temperature droped fast after the computer shut me down to idle.

Is there a line filter on a 1994 prostar?



09-01-2007, 10:51 PM
Come on guys I need help here!!!

Thanks George

09-01-2007, 10:57 PM
I just don't think than anyone can justify guessing what else may be wrong, if anything, until the impeller is replaced.

09-01-2007, 10:58 PM
Have you checked the water intake screen located in the trans cooler?

09-01-2007, 11:01 PM
You are bring rather vague in what you need. What motor, closed cooling vs raw water?. You said that you replaced your COLD water impeller last year. Have you checked it since this overheating? Check that our first. Replace it is is only $35. Is your system clogged with something? Weeds trash etc. Check the transmission cooler for clogs.

Hook up a garden hose to the RAW water side of the impeller. Run the boat at idle. Within 10-15 sec you should have water coming out the exhaust.

It would be of help if we knew what engine you have.
I would also recommend changing the oil if you had an extended overheat situation

Hope this helps

[email protected]

09-01-2007, 11:04 PM
I do not know where the intake is for the trans cooler.I also do not know id there is a line filter.

Where would that be?



09-01-2007, 11:05 PM
Where is the Trans cooler?

09-01-2007, 11:10 PM
Where is the water intake screen on the raw water side??????

09-01-2007, 11:12 PM
Find the raw water intake hose that attaches to the bottom of the boat, follow it up to a small "can like" in line water tank. It has two hoses on it that go to the transmission. Take the hose off that leads into it and inside there is a sceen that can get clogged up and resrict water flow to the motor.

09-01-2007, 11:20 PM
Thank you for exactly what I was looking for!!!!
That is very helpful.

I cannot express my appreciation.


09-02-2007, 12:08 AM
Footin knows his stuff! I agree sounds like a partial clog or damaged impeller or last resort thermostat partially sticking closed.

PS, you quickly learn what you need to know on here! Good luck!

09-02-2007, 02:28 AM
I had not thought about the possibility of a bad thermostat, but will keep it in mind. Thanks again for all the help.
I am mechanically "disadvantaged" but love my boat and my life on the river.

Thanks for your help.