1998 Mariner offshore V-135 2.0 Liter Low oil alarm

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

yeah i have a voltage gauge on dash and no its not freaking out. Just gotta jump that purple wire tonight and see if it goes away. if not going to start looking for an alarm module. Thanks again for all the help.

 

[j_martin]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

If you haven't already, detail the ground connection from the module at the same time.

good on ya
John

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

what do you mean by detail the ground connection...? ok I ran the volt test without noise i got 11-12 not running and 13-15 and an occasional 16-16.5. I ran this grounded to the module ground and the sensor grounds, and the solenoid ground. Ok I tried to disconnect the purple line and run to the positive at the solenoid but that completely disable the alarm. wouldn't even beep upon startup... oh and voltage at idle was around 14-14.5 and only slightly higher while revving.

 

[j_martin]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

When you hot wire the alarm with the purple wire, you should get the start up beeps when you make the connection. If you get that, and then get no more alarms, the key switch or wiring is bad.

Detail -- clean with a vengence
Voltage is good.

Sorry I missed your post till now. Slipped through the cracks.

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

That is what has me bugged When i Disconnected the purple wire and hot wired I do not get ANYTHING no startup beeps and of course no alarms. Alright, on vacation right now. When I get back I'll clean the those grounds vigorously. Will update then. Thanks again for all the help.

Brian

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

Quick update on this.... today managed to jump the alarm... still alarms at 3000 rpm and above. Vigorously cleaned all grounds.. didn't help. ran a compression test for kicks and alarm started going constantly even with motor off. compression checks out perfectly... all six cylinders at 105. Although did notice incoming voltage did surge to 16.9 at points. Thank you.

Brian

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

ok I am hoping someone is still monitoring this thread. installed a new module. still alarming at 3000 RPM noticed though I'm getting 20 volts at solenoid and incoming alarm voltage, RPM jumped to 4000 and I got 30 volts at solenoid. Shut down to avoid damage. Any suggestions. BTW this runs on a dual battery system. batteries are 3 years old.

 

[j_martin]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

Either connections are bad or batteries are shot. Voltage regulator must also be shot. Shouldn't go over about 16 with any battery that will crank the engine.

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

ok will start with the connections and detail those. Then get the batteries test. after that will also assume voltage regulator is bad. yes i was quite shocked to see 30 volts so much so that i double checked it. thank you.

Brian

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

Ok both batteries checked and both are putting out 12.4V (not running). as soon as i start boat the Battery level gauge pegs to overcharge, if i RPM up at all it exceeds the red overcharge range. If I'm understanding this correctly the motor has two regulators. any way to determine which one is bad... Don't know if i mentioned above either but Stator is new in 2008. Thanks.

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

Ok. i'm hoping that someone with some electric knowledge can help me out here. Started the boat up and tested voltage at battery... even when revving did not exceed 14.6 (well reving to 2500-3000, assuming cause tach is way off (high)) Still getting 19-24 volts at slightly revving at solenoid. Testing all 4 red outputs from the two voltage regulators. and was getting 18+ volts off all four of them when grounded. Have not tested the yellows from the stators. I really wanna think one regulator failed in July (tach started going way higher then motor was running) then the alarm developed from the oil module once it started getting >16 volts on that assuming when the other regulator failed. Two questions... does this sound legitimate in the theory of the two of them failing and why would i still be getting 14.4 volts on batteries (they are not fully charged right now) but 20-24 volts at solenoid.

 

[gwukena]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

Thought from left field. What is your voltage at solenoid with key off? Just trying to rule out batteries being wired in series instead of paralell.

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

11.8-12.6 with key off...... 12.6-13 at idle but soon as motor RPM's up jumps to over 20....Thanks.

 

[j_martin]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

You can disconnect the yellow pair to each regulator in turn. The other one should charge at about 20 amps, regulated at about 14.8 V.

If one were overcharging, the other should drop out, and 20 amps should not be able to over voltage a battery that much, maybe 16V at the most. SOMETHING IS WRONG WITH YOUR BATTERIES. (yes, I'm yelling, you don't seem to hear)

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

Sorry, I am pulling them out of the boat and taking them to a battery shop for testing. when you say that each should be regulated at 14.8 volts do you mean at the red lines coming out of the regulators... because I was still getting 19-25 volts out of those into the solenoid but only 14.4 back when running a voltmeter at the batteries. my last post was unclear... I am not getting overvoltage at the batteries only at the regulators and solenoid junction/alarminput lines. I apologize I was not understanding but appreciate your expertise and will really have to eat a slice of humble pie if the batteries end up being shot as I misunderstood and thought if the voltage at the batteries stayed under 16 then they were good. Thank you.

 

[j_martin]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

If the voltage at the solenoid (where the regulator wiring joins the battery wiring) is significantly different, the wiring is bad. 40 amps across 10 feet of 8 gauge wire should have about 0.25 volts drop. 6 gauge would be half of that. You simply have a bad connection.

I've seen a light coat of oxidation between the battery post and the connector do that when charging, and yet pass enough current to start the engine.

Bottom line, a connection is bad on one of the battery cables.

hope it helps
John

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

ok... yes they are significantly different. At mid RPM (2500 or so) holding 14.4 at both batteries (Voltmeter right on battery posts) but reading 18+ volts at Regulator input wires on solenoid... and 19-22 volts on red wires right out of each regulator. I have completely detailed battery connections with a wire brush, they were slightly oxidized. but will remove all the connections at the solenoid tonight and detail those and see what happens. Thank you again. I admit I am no expert and again appreciate this.

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

ok. I have pulled both batteries and had test at advance auto. both checked out. Replaced batteried Cleaned EVERY connection thoroughly. Put back on and still same problem. 30 volts at solenoid as soon as ramp up begins but still only 14.4 at batteries. the batteries are connected to motor with a Guest 2100 battery switch. I'm assuming this acts as a regulator because there is 20+ volts in line up to switch but only 14 after switch... I have tried it on battery 1 and battery 2 and both with the same results as soon as motor revs up( I mean even a little) puts out over 20 volts from regulators and into all other electronics. Do you think i should get second opinion on batteries. I'm really leaning towards BAD regulators. have disconnected and tested leads from both 13-14 at idle and 20+ As soon as a little RPM up....

 

[j_martin]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

ok. I have pulled both batteries and had test at advance auto. both checked out. Replaced batteried Cleaned EVERY connection thoroughly. Put back on and still same problem. 30 volts at solenoid as soon as ramp up begins but still only 14.4 at batteries. the batteries are connected to motor with a Guest 2100 battery switch. I'm assuming this acts as a regulator because there is 20+ volts in line up to switch but only 14 after switch... I have tried it on battery 1 and battery 2 and both with the same results as soon as motor revs up( I mean even a little) puts out over 20 volts from regulators and into all other electronics. Do you think i should get second opinion on batteries. I'm really leaning towards BAD regulators. have disconnected and tested leads from both 13-14 at idle and 20+ As soon as a little RPM up....

There's your problem. Your friggin regulators are just fine. You have a fault between the solenoid and the battery. Try hooking up one battery directly to the engine without any junk and see how it does.

 

[bjrrockwell]

Re: 1998 Mariner offshore V-135 2.0 Liter Low oil alarm

ok will perform that this weekend and update.