99 Suzuki DF70 surg off idle/ 1 peep continuous

[vrodrig]

#1 Having a surge problem off idle about 2500 RPM's to 4000 RPM's. Idle seems to be ok, lower unit is in a barrel of water, engine temp is good, sensor are all connected and seem to be ok. Are these engines equiped with a rev limiter, is this normal when there is no load on the prop? I later used the ears on the lower unit, I put it in gear so the prop spins and it did the same thing. Just surges!

Problem #2 While the engine idles the warning buzzer beeps once about every 7 seconds it woudn't go away. Some one mentiond bad conections at the battery, so I checked and cleand them but no change. Same thing!

If any one has any ideas please let me know. Thanks for your help!

 

[clanton]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Engine has to be in gear to exceed 2500/3000 rpms, switch on side of block close to shift linkage may need adjustment. Beeper may be maintenance reminder, reset. If not check ALL wires, and connections, all ok, probley ECM defective. There was recall on early model ECMs, should check for correct ECM.

 

[vrodrig]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Hello Clanton, I dont know exactly how to reset the maintenance reminder, I did check all connectons of sensers, computer and even cleaned battery posts and terminals but this did not extinguish the beep. Any ideas?

I would also like to know if the fuel guage activates the beep if it reads empty. There was probably about 2 inches of fuel in tank. After adding fuel 5 gallons beep was still there. Does it need more fuel?

 

[vrodrig]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Clanton do you know how I would go about checking for a recall on this computer? The tech working on the boat says that the ECM can be flashed but its very expensive to do this. Any info would be helpfull.

 

[lakensea]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Clanton do you know how I would go about checking for a recall on this computer? The tech working on the boat says that the ECM can be flashed but its very expensive to do this. Any info would be helpfull.

No recall on DF70 ECMs

At this time, Suzuki ECM's CANNOT be flashed.

 

[vrodrig]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Well thanks for the info lakensea, the guy seams to think so. I am at a big loss then, I dont want to have to purchase a new ECM. Maybe ill sell the boat.
I couldn't troubleshoot the single beep every seven seconds as the engine runs, nor could he. Flashing was his solution to rid the audiable beep from the warning buzzer.
Do you or anyone out there recognize the issue? Engine seems to run well as to his laptop computer. Darn BEEP!

 

[noelm]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

do you know how to reset the service "beeper"? it could be that, read about it in the service manual you got with the motor, most require you to remove the cutout lanyard, turn the key to on and activate the cutout a couple of times untill you hear a single beeeep, then refit the cutout and all is good, one tip, do NOT rev the engine to high RPM out of the water, or even in the water in neutral, that is no test for anything, put it in the water and test it properly.

 

[Ldavidgrover]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

The motor does have a rev limiter in neutral. Try resetting the oil reminder. With the motor off turn the key to the on position and pull the lanyard out three times and you should here a steady beep letting you know it has been reset. The ECM's do fail if you try starting the motor with a weak or bad battery. If all else fails I have a spare ECM you can try

 

[vrodrig]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Thanks guys, I did try the lanyard thing. The Seloc manual gave me info on that but it still did not work, its just a single beep every seven seconds the tech working on it says the engine is performing win in all its proper limits its not over heating, oil pressure is good, injectors and fuel pump are working the way they should within specs.
I just dont get it and neither does the mechanic we are stumped.

 

[99yam40]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Sounds like it is just the reminder like they said keep trying to reset it.
Post exactly how you tried to reset it, maybe someone will be able to give some more info.

I know you have to do it withing a certain time and maybe you did not pull it out far enough each time to unground it or long enough for ECU to recognize

 

[vrodrig]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Repost of previous, I didnt get to finish.

Thanks guys, I did try the lanyard thing. The Seloc manual gave me info on that but it still did not work, its just a single beep every seven seconds the tech working on it says the engine is performing with in proper limits its not over heating, oil pressure is good, injectors and fuel pump are working the way they should, battery is charging 14.5 v. I just dont get it and neither does the mechanic, we are stumped.

He said he tryed another ECM and the Beep did not sound. But really guys, what that suppose to mean. If I swap with another computer, is somthing else going to come up later. At this point the computer is just a catch all for the Beep. New Computer bout $1300.00 Wow!

Can anyone really pinpoint what is happening inside the curcuits of the ECM?

Thanks Ldavid for offering your ECM I appriciate the gesture.

Thanks Yam, what I did with the reset, was to turn key on and pull up an lanyard button out 3 times with in 7 seconds.

 

[lakensea]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

1999 engines do not have the oil change reminder.

You have solved your problem by swapping out the ECM with a known good unit and the alarm did not sound, so why are you still chasing the oil change reminder that your engine does not have, and even if it did, it does not sound the alarm while the engine is running!

Most likely the warning alarm system is malfunctioning, which means you may not have the low oil pressure or temp alarms working, which would mean the only warning that you have a problem may be when the engine seizes.

Replace the ECM. $1,300 is a good price as normal price is $1,574. It's a lot less than a new engine. I also would order it before next Tuesday as there is a Suzuki parts increase and it may be more after that.

 

[vrodrig]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

lakensea, I am going to take your advice very seriously the last thing I want is the darn engine to seize. Your right about the oil change reminder it is not equiped that way, based on what Seloc manual says. I did try it anyway just for kicks. I think from 2000 or 2001 and up is when they designed that into the system. The only way I can make the beep go away is to push in the key and hold for a few second, Beep gone. Hey I appiciate your comments anyway.

 

[clanton]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Recall or not some of the early 70HP computers were replaced because of holes being burned in the pistons. From what I`m seeing on your post the ecm is defective.

 

[lakensea]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Recall or not some of the early 70HP computers were replaced because of holes being burned in the pistons. From what I`m seeing on your post the ecm is defective.

That recall was for 1998 DF60's ONLY.

Do your warning lights on the tachometer come on when you turn the key on? The fact that pushing the key in cancels the alarm indicates a diagnostic failure code, which would also be indicated by a check engine light on the tach. It also should show up on the laptop diagnostics. You then systematically check the components involved and if all check out OK, then you replace the ECM. However, by swapping out the ECM as you did, and the alarm stopped, then you have diagnosed a bad ECM.

Suzuki implemented the oil change reminder in 2001 on all EFI 4-Stroke models.

 

[vrodrig]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Yes the lights come on on the start up. All lights go away and engine runs ok, no tach lights blinking any codes as the beep continues every seven seconds. No codes came out on the laptop diagnostics. All other components checked OK as to the tech working on it.

 

[stevensinks]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Yes the lights come on on the start up. All lights go away and engine runs ok, no tach lights blinking any codes as the beep continues every seven seconds. No codes came out on the laptop diagnostics. All other components checked OK as to the tech working on it.

Did you ever get your problem solved? I ask becouse I also have a 1999, DF70. And your problem sounds like what I have going on. My boat has been in the shop 3 times for a total of 8 weeks and $1000 and it still is doing it. Im about at wits end.

 

[vrodrig]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Wow, finally someone that has the same issues. Where do I begin, I bought this thing used and the seller swore it was the best thing selling. I also have spent all kinds of money on this thing. I am a automotive master mechanic, though I never clamed to being a pro on outboards, I gave it a shot anyway. 4 stroke should be basic right, wrong!

Long story short I have checked sevral key pionts as to why this thing would beep the way it does but found nothing. Though I did fix other things that needed attention.

At this point the kind folks on this forum have lead me to believe I need to replace the computer. The tech that worked on it said nothing was wrong everthing looked good on the laptop scanner of his. He suggested a new computer.

I dont know if this may help you but keep in touch with me as to what you do to fix it. I'll do the same four your case.
Thanks for your concern!

 

[stevensinks]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Wow, finally someone that has the same issues. Where do I begin, I bought this thing used and the seller swore it was the best thing selling. I also have spent all kinds of money on this thing. I am a automotive master mechanic, though I never clamed to being a pro on outboards, I gave it a shot anyway. 4 stroke should be basic right, wrong!

Long story short I have checked sevral key pionts as to why this thing would beep the way it does but found nothing. Though I did fix other things that needed attention.

At this point the kind folks on this forum have lead me to believe I need to replace the computer. The tech that worked on it said nothing was wrong everthing looked good on the laptop scanner of his. He suggested a new computer.

I dont know if this may help you but keep in touch with me as to what you do to fix it. I'll do the same four your case.
Thanks for your concern!

I bought my DF70 used 6 years ago. For the first 5 years it was great. By far it was the best outboard that I have ever owned. Im not good at working on these things and I dont know were to turn that would be good.

I have priced a new Honda and that would run about $10,000 instaled. In the shape that its in the DF70 is not worth any thing for a trade, so that is out of the question.

I have been trying to find a way to get hold of Suzuki Tech support and see if they could be of help but no luck so far.

I will let you know if I make any progress on the problem.

 

[vrodrig]

Re: 99 Suzuki DF70 surg off idle/ 1 peep continuous

Can you find someone that can lend you a ECU (engine control module) just to verifiy the beep issue?