Just to close the loop on this, I got the new coolant temp sensor & put it in yesterday. No more blown diode & no more stalling! Certainly looks like that fixed the problem.
Can you give me more info about what you're trying to say? What am I missing? The diode is being burned up (I can physically see it crack & smoke as well as test it has failed). It looks like when that happens the TKS module floods the engine stalling it.
If I unplug the coolant sensor...
I’ve had this boat for about 10 years now & it’s been nearly perfect up until now. It’s never had any problems starting or running since I’ve had it.
I’ve checked that breaker many times but that’s not tripping. I’ve tested it as well & it works as expected.
I did read about the TKS...
How do they drift closed? That doesn't make sense. I could see the act of pulling the plug apart & putting it back together again dislodging some corrosion but I'm skeptical about adding more clearance. Maybe spreading them scraped away some corrosion as well & that was what actually fixed...
Ignition breaker was a false positive. Must have just been a weak fuse. Engine died without tripping any breakers.
Starting to second guess dismissing fuel issues now. Maybe too many years of ethanol has an idle jet clogged & when it idles down after warming up it dies. I’ll have to go...
Pulled kill switch & remote control wires & checked them at the connectors - all seems fine. Got the engine running & shook/tugged on all the low-voltage wires/connections I could reach without any effect.
I noticed that the breaker at the ignition switch seems to be tripping (I think). I...
Yes, I'm definitely running it with muffs.
Cranks fine for awhile then clicks & catches but I assume that's just the battery getting run down. If I stop & give it a minute on the charger & try again it cranks fine again. But I could be wrong, maybe something is just a little loose...
Last year I had been running the boat (2008 Four Winns H200 w/ 5.0L Mercruiser TKS) for several days at the lake without issue. Dropped off some family at the dock & started reversing out of the hoist when it just died suddenly & would not restart. I couldn't get it to restart the rest of the...
my 2008 Four Winns H200 steering is pretty sloppy. I’d like to replace the helm (I think that’s what the gear & cable assembly that the steering wheel attaches to is called). Curious how hard this is to do. How do I figure out what replacement parts I need & what’s involved? Is this a...
This is more just a "what does everyone think" post. My 2008 Four Winns H200 snap-in carpet is starting to have issues. The rubber backing around the snaps is deteriorating & a couple of the snaps are actually pulling through or have pulled through. So I need to replace it but I'm wondering...
I was thinking about adding a fuel shut-off valve between the fuel/water filter & the carb on my 5.0L engine with TKS carb. The idea being that I could shut the valve off & run the boat out of gas so there wouldn't be fuel sitting in the carb bowl. Is this a bad idea? If not what's the best...
I've got some time off over the next few weeks to just bum around on the boat so I'm thinking of boating down to the Schuylkill & seeing how far up I can go. I have a 20' Four Winns bowrider (see signature) & launch at Neshaminy State Park Marina in Croydon. I've never gone down as far as the...
