How to install a Temperature Sensor & Gauge on Outboard Motor
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- Опубликовано: 5 дек 2015
- amzn.to/2gzcLTT
Today I'm installing a aftermarket temp gauge on a 1990 Johnson evinrude 70hp outboard boat motor. The gauge and sender were bought off ebay. It's a very easy install into the head. Hardest part is routing the wire.
Thank you. Great video and explanation. Info like this can be really hard to find.
Good video brother. Thanks for sharing!! 🤙
Awesome! I have the same engine! I was looking so hard for a video to do this and bam found this and so happens I have the same engine haha.
Thank you ! That's the answer iv'e been looking for
Great video and explanation! Thank you!!
Thanx...installing one on my Johnson v4 90hp...hope it works my gauge correctly 🤞
Got same motor, thanks man!
your motor should be sitting at around 135 to 145 deg F............ 175 is way way too hot, the thermostat is fully open at 143 degree ., so if you have a new water pump then you have a blockage somewhere not eltting enough water through. check thermostat is doing its job...........
I want to put a gauge on my zero turn mower because I just installed a new motor.The temps on these things run around 300 degrees.Do you know where or how I would do this? I just need something to connect to a bolt up high and even if its off by 40 degrees I can still just when the motor is getting hot and also when it gets overheated by what I am used to seeing on a normal day of mowing.I just need a gauge that will go up to about 400 degrees
Hi there and thanks for the video. I have a 95 evinrude same setup with the blind hole. Any idea what the thread size is? I have an external temp sensor that will mount on the head and just Ned to know the right bolt size? Thanks
Hi, I have a 140hp v4 Evinrude outboard. Do you know where is the tachometer wire ?
Thank you
thanks for the vidio, I have the same motor can you give the sender and gauge from regard John
Anybody have info on where to find BRP's TSB on this...not coming up with anything in my, 'online' search?
Too funny, I own this exact boat now. I plugged the brown wire back in and started troubleshooting and found this video.
Brian Heck haha, this was my father in laws. I sought on craigslist or maybe Facebook couple weeks ago. Did you buy it. How’s it running? We actually had a lot of work done to it it was a basket case when we bought it.
I did buy it just recently out of Raymond! Paid more then 2k, but you can't find a solid center console around here! She's running great, the wiring still needs some work, I'm in the process of ripping out all of the old stuff. We're still in the fresh water dating phase, plan on getting out in the salt this summer. I'd love to hear about what all you had done to the engine if you have a minute.
Question . The origional temp sensor is basically a thermostat as well . Wonder if splicing the wire and tapping the two together may work as well . I have a temp gauge coming for my 150 but it's a 3/8 pipe tap and I'm leery about drilling blind hole bigger to tap . Dont see where splicing existing wires together and using existing temp sensor would hurt
Mike, I don't think the scenario you suggest will work. As I understand it, the wire he refers to, runs the overtemp alarm. I've seen other videos on how to test that sensor. It has two states, open and shorted (overtemp). [shorted to ground]. Think of that sensor as a simple switch, one side connected to the wire, the other side connected to ground. Normal temp, switch open. Overtemp, switch closed. A temperature gauge's sensor is like a dimmer switch, as the temperature goes up the resistance changes. Two different type sensors. (FYI, I’m an electrical engineer, never worked with these sensors before, but I'll be testing the overtemp sensor/alarm on my 60hp Mercury this week. Reply here and I'll let you know how that goes. My boat currently doesn't have a temp gauge.)
@@johnvgig sounds good ...keep me posted
What size temperature sending unit is that? 1/8th, 1/4? 3/8? Thanks. Video is helping me for sure.
1/8npt
hey that wasnt what i was looking for ha, but i learned a few things,l.o.l
just to answer everyone's question: any 1/8NPT will fit perfectly. been trying to use those cheap ones you can get off amazon for the hot warning horn. still figuring out how to get them to work properly.
Did you ever get a good combo for gauge/sensor? Thinking of doing this on my evinrude.
@@AB-bg1or problem is the variance even from the same manufacturer. my suggestion: buy 2x sensors from amazon from different makers, then return the least accurate one. other thing you can do is physically mark the gauge using a laser temp gun so you know roughly where the verge of overheating is on the gauge. of course nothing is better than the overheat alarm.
@@ct1762 gotcha. I thought about doing exactly what you said and using a Sharpie to mark the gauge. After a rebuild I’m trying to keep close tabs on my engine. Cheers.
Is your engine still overheating despite relocating the tell tale to the top of the exhaust? I have the same engine and the same problem but I am thinking about relocating the tell tale.
No it fixed it. Johnson has a service bulietin back in the day telling people to do this. I can see it get hot at idle then cool down when running fast but it never overheats anymore.
know this is old but just a tip: yes, you should certainly re-locate your telltale to the top of the block HOWEVER this isn't the source of your issue. depending on year, you will need either a new thermostat (the one in the fully covered plastic housing) or a new venatherm as the mercury in it goes bad and prevents it from receding at idle when the temp creeps over 155 degrees. Next, install the updated water pump kit as it pumps more water, and be sure to update the thermostat spring to the ones that come in the awesome kit!
@@ct1762 can you share info on the 'kit', you mention here? I can find a replacement thermostat kit online, but...not the venatherm. And the, 'updated' water pump/thermostat spring 'kit'?
@@markstraka8184hi you bet. new kit is # 432955. note: do not install o ring between pump housing and impeller cup and underneath the impeller like the old ones. if you do it will increase the pump pressure at idle, causing it to run stone cold and will quickly trash the motor due to cold seizing. t stat # 436195 is the venatherm type. updated springs, indicator elbow and restictor grommet are all included in above kit and MUST be used. do NOT use this kit with the stock indicator restrictor in place
hello again can you tell me what is the blind hole size regards JOHN
Sold the boat years ago. Can’t you measure yours?
OK, well they didn't have a chronic overheating problem, but they did recommend moving the telltale up there. I hope you have solved your overheat issues. I know the warning horn comes on usually when it is too late when running at high speeds, but unfortunately you are usually not looking down at the gage either when running at high speeds, until it is too late. That warning horn signals a few more things than just overheat, so you may have a different issue going on besides overheat, or the horn may be malfuncitoning as well. Hope you get it resolved...
Yes moving the telltale per BRP's TSB which I had to find to show mechanic totally fixed all issues.
@@diyboats7146 Glad it is resolved
Hi, good video !
I have a 140hp 2 stroke evinrude and my rpm gauge isn't functionning. The needle only moves when the starter is on (during engine start), but once the engine is running, the needle points at 0.
Do you have an idea why this happens ?
Thank you.
Did it ever work?
There is a "pole" setting in the back, make sure that is correct for your motor.
+SolarBurrito Hi, I'm going to check this pole, but this gauge worked a few years ago, so this pole should be good.
Thank you
yes could be the stator going bad. test the power coild with a DVA adaptor, then make sure the rectifier is charging the battery.
My engine is a 50hp and I installed it just like your but my issues is my temp stays in the middle even when it’s cold!! Then when hot way pass. Help?
Where on the engine did you install? You may have an overheating problem.
SolarBurrito a port between the thermostat and coil pack top piston area.
it's probably the sender. i'd get a new one 1/8'' NPT on Amazon and see if its more accurate BUT get a cheap temp gun and make darn sure it isn't overheating! those motors need to be 125-155 degrees at the top of the head at 900rpm. I have noticed they will creep up to about 165-170 at a slow idle because the pump is barely getting any water up to the head. another possibility is your high pressure poppit valve. if it's leaking at low speeds, it wont create enough pressure to let water reach the top cylinder! pop off the head cover and inspect both the thermostat and poppit valve grommet to be 100 percent sure.
What year is your motor?
Think it was a 1990. Sold that boat years ago.
FYI 175 is way too hot! 125-152.5 at the top of the head. this gauge is way off, or your motor is on the verge of setting off the alarm.
What sensor did you use?
The one that came with the guage, it didn't have a part number. it had 1/4" threads.
@@diyboats7146 it should be 1/8'' NPT 27 correct?
That would not work , the end of sender unit must be in water