OMC Cobra Volvo Penta SX Engine Trim Sender Diagnosis

[@stewartwalker9063]

I just want to thank you. I bought my first boat, a broken omc cobra. because of your videos I was able to diagnose and replace my engine coupler. You are doing a great service to all us novices. Thank you thank you thank you and god bless

[@michaelromer2016]

Thanks Stewart! I'm glad to hear you enjoyed the videos. I try to cover all the common issues. If you run into something new, that I haven't covered, I'll make a how-to video for you. Have a good one!

[@stewartwalker9063]

@@michaelromer2016 god bless you

[@georgenaylor8274]

@@michaelromer2016 I want to add a trim tilt gauge to my 89 omc cobra 5.8l. it never had one and it uses the same sender that is in your video. I haven't a clue where I would connect the gauge to, if it's even possible.

[@michaelromer2016]

@@georgenaylor8274 start with buying a new sender. The one you have will not be working. They don’t last that long. kzbin.info/www/bejne/pqalYnitZpyghKs

[@ironheadbridgeman9282]

Great video!! Very helpful. How about a video of the location of the sender or replacement.

[@michaelromer2016]

I've got a motor out now, so I'll work on a video for you.

[@spencerdoggett1743]

Thanks for the info. It this application lead polarity shouldn't really make a difference. Next, I'd like to see the replacement of the sender procedure.

[@michaelromer2016]

Spencer Doggett hey thanks for your comments. I'll post that video sometime this month.

[@Abdel612]

thank you . I don't have power over mine what the next step

[@ricksandoval8775]

I spliced in my trim sender it works when I move the trim sender arm but it the arm of trim sender doesn't seem to touch drive unit

[@georgenaylor8274]

Can you show how you can add a trim gauge to omc cobra 5.8 that never had a gauge

[@randypedret8924]

What about on the mercruiser engine how does it work and what wires do I need Tu run just to add a trim gauge cuz it didn’t have one gauge before on the boat

[@erichancock4247]

I actually found the correct connector. My boat doesn’t have a trailer trim button anywhere.

[@cowlumbus]

Helpful. Sounds like these VP senders are garbage quality. I see forum posts of guys saying they have had 3 of them in 4 boating season. I just bought a new had a buddy pull the lower unit only to find that the ohm reading doesn't go below 50ohms (approx 1/2 way on gauge). I wish I could zero in the gauge to solve the need but no luck.

[@tedolmsted1810]

Great help as always !!

[@michaelromer2016]

Ted thanks for the wonderful comments!

[@doylesouders1228]

Just a quick note, You are on the 200K ohm range which is 200,000 ohms. You referred to your reading as 132 ohms, it is actually 132,000 ohms. Video is great thanks for showing me where that sensor is. Not sure why you would get different maximum readings when the leads are reversed, you should just be measuring the resistance on a potentiometer and polarity should not matter.

[@jtsarby]

I tested my sender. I got zeroes on 200k. I switched to to 2k and got a range from 138 up to 0 down

[@MODOORTEK]

for anyone reading this old comment, clean the inside of the connectors then add dielectric grease to both ends of the connector. ohm reading will not change by flipping polarity. the reading changed because the connection changed

[@djmorgan8783]

I heard a mechanic tell me Mercruiser boats don't have that plug in is this true

[@okinawadonkichi]

While moving the sender arm back and fourth, the ohm readings should show between 0 and 190-210 ohms. If they do not, you're sending is defective and needs to be replaced. This method of diagnosis can only be used for 1986 - 1992 models.

[@cowlumbus]

So what is the method for those of us with a 1997 7.2L VP? My sensor has 3 wires but there are only two going in the harness. My brand new sender shows a 50ohn to 140 ohm range. Thus as the lowest trim it shows 50% on the gauge.

[@erichancock4247]

I have a three prong sender plug???

[@tankhorton70]

I’m currently waiting on a new pivot rod for my boat but with doing your test I’m getting 00.0. Would that indicate that I need a switch or where would my problem lay?

[@Abdel612]

I'm having the same problem did you fix your

[@StephenOlner]

If you have to replace the sender how do you go about doing that?

[@michaelromer2016]

So there are a few ways to replace it. The best way is to pull the stern drive off and while you have it off remove the u-joint bellow and exhaust bellow too. This will give you a straight shot at replacing everything with little trouble. The transom mount section of the cable has a rubber grommet which you press out to allow the cable to be removed--also simple to remove. While you are replacing the sender, check the ram hydraulic lines for cracks/leaks, this is the most ideal time to replace them and are about $70 a piece. Also check your gimbal bearing and definitely don't reuse the bellows.

[@StephenOlner]

Michael Romer did the gimble and pistons last year on it. Any idea where I can find a pin out for the relay. For some reason mines not operating even thought we checked fuses and conti unity of wires. Seem to have an issue with the ground

[@babaksobhi2676]

mine has the same problem. seems the ground has issue?

[@alfahnestock6660]

My trim gauge reads backwards

[@TravisPolkinghorne]

About 2:10 female sude he starts measuring

[@maulikpanjariya]

Volvo penta D4 225 Trim sensor...change Make video on this ....