50hp nissan tldi stalling problem

[greenpathy]

ran a check b/c dash lights were flashing ,pulled codes tps1,tps2, fuel feed pump.. well motor cranks fine, everytime, runs great at idle, and will run forever, but when you throttle up to about 4k or more and run it for about 2 minutes or so,, its starts surging and cutting out really hard..likes its going to cut off,,so i always throttle back and let it idle again for a sec to kinda catch up and i'm off again, then again after a few minutes its cutting out again..i just chenged the spark plugs and water pump hoping maybe theese would help,,but no luck..new feul lines were added from tank to engine .still no luck,,the thing that kills me is this engine is a 2005 model with less than 200 hours on it,,,to be sure it doesnt need a fuel pump already... there very high... plus nobody even close to me works on nissans or sells these things for that matter.. i'm kinda scratching my head on this on.. could it be the tps sensors causing it to cut out? or fuel feed pump?

 

[TOHATSU GURU]

Re: 50hp nissan tldi stalling problem

You use the service manual to pull the codes from the tach and then interpet what they mean. The codes are everything on these. Any other method of troubleshooting is just random guessing. What's your zip code?

 

[greenpathy]

Re: 50hp nissan tldi stalling problem

27520..(zip code) ..i used the manual to pull the codes,,thats where it was saying tps1, tps2, fuel feed pump. the fuel feed pump kept comming up at 4800 rpms which is where (if i remembered correctly) it cut out on me last.

 

[TOHATSU GURU]

Re: 50hp nissan tldi stalling problem

You have two dealers within 20 miles of you. But, you need to trust the codes. Reset, the TPS making sure you have the right size battery and that it is no older than three years old. If you don't get an improvement then you trust the codes and replace the fuel feed pump.

 

[greenpathy]

Re: 50hp nissan tldi stalling problem

i have heard of the (right size battery comment before) but it was hard for me to believe that it could be that,reason being is b/c this battery has been in it since i bought the boat almost 2.5 years ago, and it never pulled any codes before,, it still cranks fine and keeps a full charge on it.. but i will try anything at this point,,so what size battery do you suggest i get cca wise that is???..plus does it have to be a marine battery( deep cycle) or can it be a regular car battery? (that lets the alterantor do the charging)??

 

[pvanv]

Re: 50hp nissan tldi stalling problem

You want a 1000-amp battery for any TLDI. Deep cycle is OK... especially for low-power-draw items such as fishfinder, etc, but a start battery will also work. Use a marine battery. Don't use a car battery, as the vibration may shorten its life.

 

[greenpathy]

Re: 50hp nissan tldi stalling problem

i have looked for a 1000cca marine battery and i'm having a little trouble finding them,,they seem to go that high mca and above, but cca they didnt really go that high. unless it was a car battery..any links would be greatly appreciated..

 

[greenpathy]

Re: 50hp nissan tldi stalling problem

http://www.ebay.com/itm/Optima-Grou...A%2BFICS%2BUFI&otn=21&pmod=260963192748&ps=54

this blue top should work,,,its 1000cca at 32degrees f...,,unless you know of another just as good replacement.. thats cheaper..

 

[TOHATSU GURU]

Re: 50hp nissan tldi stalling problem

That will work. Brief explanation on the battery requirement:

DFI 2-strokes require a minimum amount of power to energize the engine ignition system. That requirement is far greater than what is required to activate the starter. Battery age, condition of wiring, etc can lead to a condition where there is enough current to start the engine, but not enough to fully initialize that ignition system which can cause a variety of trouble codes.

Evinrude DFI engines use a different system that does not require a battery to start the system. Mercury, Yamaha and Tohatsu use the type that does.

 

[greenpathy]

Re: 50hp nissan tldi stalling problem

i've never really had it broken down to me in terms i could understand until now, so thank you for all your help..i'll get the battery 1st and go from there...

 

[pvanv]

Re: 50hp nissan tldi stalling problem

i have looked for a 1000cca marine battery and i'm having a little trouble finding them,,they seem to go that high mca and above, but cca they didnt really go that high. unless it was a car battery..any links would be greatly appreciated..

MCA is the rating at 32F. CCA is at 0F. In North Carolina, odds are the 1000 MCA will be fine. There are quite a few flooded batteries in group 27 and 31 that will fit the bill for you, as well as the fancy Optima and other AGM types. Just don't go with a gell cell unit, as the charge profile is quite different, and the charging system(s) on the boat might cook it.

 

[greenpathy]

Re: 50hp nissan tldi stalling problem

well if it comes down to it and i have to get a new fuel feed pump assy.... about how much am i looking at?

 

[TOHATSU GURU]

Re: 50hp nissan tldi stalling problem

From us, $478.00. But that depends on your model and serial number.

 

[greenpathy]

Re: 50hp nissan tldi stalling problem

i would def, get it from you guys since you have helped me... question...is this a common thing for these to go out like this with as little hours as i have on my motor (less than 200)?

 

[TOHATSU GURU]

Re: 50hp nissan tldi stalling problem

Nope...It's probably a mositure and age issue. What's the model number and serial number on yours. They have a 4 year warranty so you may be able to get it covered.

 

[greenpathy]

Re: 50hp nissan tldi stalling problem

dang,, i'm pass the 4 year mark unfortunatley...
model= nsd50b 3t5-1
serial#= 034734xe

 

[pvanv]

Re: 50hp nissan tldi stalling problem

Your motor uses 3T5043100M, FFP ASSY, D40/50/70/90B, (GSC434). MSRP is $638.56. Figure $475.00 plus freight.

 

[greenpathy]

Re: 50hp nissan tldi stalling problem

saving money,,battery 1st..

 

[mnormand]

Re: 50hp nissan tldi stalling problem

I wanted to add a few notes to this battery discussion, as it worried me when I first saw that. In no way am I refuting Tohatsu Guru's posts, as he has been very helpful to me. But I stumbled across this on the Tohatsu website, maybe it will help others make their own decision.

http://www.tohatsu.com/tech_info/tldi_faqs.html#Q17

Do I need a special battery to start a TLDI??
Because of the additional power requirements needed for a direct injection, TLDI? motors require you to use a marine battery with the following rating:

850 Cold Cranking Amps (CCA)

For users in colder climates, you should use a battery with a rating of:

1000 Cold Cranking Amps (CCA

 

[greenpathy]

Re: 50hp nissan tldi stalling problem

good find... soon as i get back from my cruise i'm getting a battery..