ProV 150 overheat at idle?

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Stevenhj

Cadet
Joined
Mar 8, 2005
Messages
10
I have a proV150 that runs apparently fine at higher RPMs but the emergency buzzer turns on when I put it in gear and troll at minimum RPMS. It takes a few minutes for the buzzer to turn on. I turn the engine off wait a few minutes then its OK as long as I keep the RPMs up?
 
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31900

Petty Officer 2nd Class
Joined
May 23, 2003
Messages
167
Re: ProV 150 overheat at idle?

SHJ<br />Sounds like an overheating problem probably caused by a defective water pump. When was the last time the impeller was replaced? It could be that at low revs it is not pumping enough. Do you have a strong flow from the telltale at low revs? If not, time to look at that pump as you should every 2 years.
 
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rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: ProV 150 overheat at idle?

biggest problem aside from a pump is the pressure control valve grommet. needs to be replaced and the pocket cleaned every other year with the pump. usuall symptom is over heat after 5 min of idling but anything above 1000 RPM is ok.<br />if it leaks at idle the top stbd cyl wont cool.
 
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Stevenhj

Cadet
Joined
Mar 8, 2005
Messages
10
Re: ProV 150 overheat at idle?

Thanks,<br /><br />I've already put a water pump kit in it. Is the pressure control valve grommet located in the top of the water pump housing where the water tube goes in? I can't find any reference to the grommet in the Yamaha repair manual.
 
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rodbolt

Supreme Mariner
Joined
Sep 1, 2003
Messages
20,066
Re: ProV 150 overheat at idle?

hello<br /> its located on the exhaust cover on the lower stbd side. looks like a small t-staat housing with 2 10mm hex bolts and a large rubber hose. its supposed to be serviced every 200 hours OR once per year just like the pump.
 
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chadchessher

Cadet
Joined
Apr 19, 2005
Messages
11
Re: ProV 150 overheat at idle?

Hi SHJ, let me know if you figure out your problem. Im having the exact same problem with mine, and check almost every thing. Im posted on this forum under 98 suzuki over heating. Thanks hope the best for you.
 
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Stevenhj

Cadet
Joined
Mar 8, 2005
Messages
10
Re: ProV 150 overheat at idle?

Problem Solved!!! I replaced the pressure control valve, Spring, and grommet. I just got the engine but it's a 92 model and the control valve had never been serviced, Naturally one bolt rung off(drill and tap)plus I used compressed air to blow through the water gallies to make sure they were not clogged up. It now runs fine with no overheating. thanks Rodbolt, I finally got to go fishing.
 
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