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| H210 overheating https://www.smwebhead.com/phpBB3/viewtopic.php?f=3&t=12947 |
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| Author: | cr10 [ Tue May 27, 2014 9:09 am ] |
| Post subject: | H210 overheating |
Ok, need some help, I'm having some overheating problems that myself or dealers can not find on my boat. My temp gauge pegs out at 250 and everything shuts down. I have changed temp gauge, temp sensors, water pump, impeller and ECU 3 different times for the past 3 years. Yesterday, it done it again, we disconnected the batteries and ECU for 3 hours hoping to clear any codes. I changed the temp switch, water pump and impeller again yesterday and the temp gauge is still pegged out at 250. I am not sure what the heck is going on, the engine is not overheating at all. I am thinking it has a very serious electrical problem that we can't find. Any ideas or thoughts that might be going on here. Volvo Penta Engine #s 3869364 4012194784 5.0 GXI-G |
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| Author: | NiagaraChillin [ Tue May 27, 2014 9:29 am ] |
| Post subject: | Re: H210 overheating |
cr10 wrote: I have changed temp gauge, temp sensors, water pump, impeller and ECU 3 different times for the past 3 years. cr10 wrote: I changed the temp switch, water pump and impeller again yesterday cr10 wrote: the engine is not overheating at all. Thats a lot of $$$ for replacing things that aren't broken. Have you checked your engine/manifolds with an IR gun to see what the actual Temp is? |
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| Author: | cr10 [ Tue May 27, 2014 10:03 am ] |
| Post subject: | Re: H210 overheating |
I know it's a lot $$$, I'm at the point of cutting my losses and buying a new one.Yes we have done that, all the temps are consistent with each other. We have went through all water jackets or ports to make sure that there were no blockages. The thing is that the first 2 ECUs were fried and that is why I keep going back and thinking there is a electrical problem some where. |
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| Author: | NiagaraChillin [ Tue May 27, 2014 11:21 am ] |
| Post subject: | Re: H210 overheating |
Have you tried hooking up an external temp gauge near the engine just to rule out any dash/gauge issues? |
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| Author: | Walt [ Tue May 27, 2014 11:30 am ] |
| Post subject: | Re: H210 overheating |
do you have a code reader, or just randomly replace stuff? I bought a Rinda after a dealer couldn't figure out why my boat was mis-firing a few years back. Turned out to be a bad plug wire. http://www.rinda.com/marine/marinemenu.htm I use it for regular maint and check-ups. Well worth the $400, and something I can keep in the boat incase my Temp gage goes funky like it did last summer. |
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| Author: | LouC [ Tue May 27, 2014 11:46 am ] |
| Post subject: | Re: H210 overheating |
Are you sure that the wire from the sending unit to the dash gauge is not grounding out on the engine or other metal? Does the dash gauge suddenly go to full overheat? Check all the wiring it's the o ly thing left. |
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| Author: | cr10 [ Tue May 27, 2014 1:33 pm ] |
| Post subject: | Re: H210 overheating |
LouC wrote: Are you sure that the wire from the sending unit to the dash gauge is not grounding out on the engine or other metal? Does the dash gauge suddenly go to full overheat? Check all the wiring it's the o ly thing left. Yes it suddenly goes to 250 degrees and shuts engine down. |
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| Author: | cr10 [ Tue May 27, 2014 1:35 pm ] |
| Post subject: | Re: H210 overheating |
Walt wrote: do you have a code reader, or just randomly replace stuff? I bought a Rinda after a dealer couldn't figure out why my boat was mis-firing a few years back. Turned out to be a bad plug wire. http://www.rinda.com/marine/marinemenu.htm I use it for regular maint and check-ups. Well worth the $400, and something I can keep in the boat incase my Temp gage goes funky like it did last summer. Thanks I will look at for a new investment. |
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| Author: | LouC [ Tue May 27, 2014 4:21 pm ] |
| Post subject: | Re: H210 overheating |
You really just need to better troubleshoot the temp gauge circuit. http://www.boatinghowto.com/content/tro ... auges-124/ I'm still thinking somehow your wire from the sending to the gauge is grounding when it maxes out the temp. As a test, you could disconnect the factory wire that connects to the sending unit and the gauge. Then make up a temporary test wire (just use appropriate terminals on it) and make sure it does not ground anywhere. Run the boat for a while and see what happens. If you do not have a repeat of the problem, you know the original wire is grounding somewhere on the engine or on a bracket, etc and you have to find the bad spot. |
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