Throttle response and lurching on 150 E-TEC

[Springseeker]

E150 DPLSUF
05153942

I have my engine back at a dealer for the 5th time as it still is not performing well.It starts flawlessly,idles flawlessly and cruises the same. When I try to speed up or slow down at 2200-2900 rpm it will not hold the rpm at any setting. It speeds up or slows so I am constantly throttling up or down in rough water.I have all the latest updates and the new throttle cam,tps calibration and on water test.

It is only turning 4950 rpm when loaded with a 14.5x19 aluminum prop so the mechanic wants to try a 14.5x17 to see if that helps.Is that possible?

Also when I asked him to set the emm back to xd-50 he said that was crazy as

there are no instructions from brp to do so unless you use a jack plate. Any info
on this yet?

[302w]

When I still had my 85 115 johnson, it would either slow down or speed up at around 2800-3000 rpms. I think it does this because thats where it starts to make its tourqe and is just the nature of the beast. Im sure someone who knows better will be by here soon.

[SEAHORSE]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Springseeker &raquo;</TD></TR><TR><TD CLASS="quote">E150 DPLSUF
05153942
When I try to speed up or slow down at 2200-2900 rpm it will not hold the rpm at any setting.

It is only turning 4950 rpm when loaded with a 14.5x19 aluminum prop so the mechanic wants to try a 14.5x17 to see if that helps.Is that possible?

</TD></TR></TABLE>


The first thing to do is to get either a 17" or 15" pitch prop to try so the engine rpms will be near the top of the recommended operating range. Then try the motor to see if drivability is better at 2900 rpm.

If it still doesn't run well enough for you, then have your dealer tech call BRP on his dealer hot-line and specifically state that the engine has at 25-2900 rpm problem, and won't hold that throttle setting.

The other thing to realize is the most boats are not fully on plane at those rpms and can slow and speed up as the hull tries to find its way between running level and plowing water.

[kamie]

I have a simular issue with a 175HP. If I am crusing at 2901 RPM it's fine, but if it drops below that then the RPM's bounce around say from 2800 to 2850, then back to 2800 and finally the RPMs fall all the way back to idle.

I have not tested it to see if it will hold below say the 2200 RPM range.
I am currently runnng a 17p 4 blade and have not tested top end.

[Springseeker]

Thanks seahorse. The tech is thinking the same thing and is hoping the rpms will be higher at the point where the hull is just planing and hold there.

I'm skeptical however as it is acting like the post below.It loses 2-300 rpm suddenly and then lurches ahead if I just barely touch the throttle.

As for the emm and xd-50 issue I am leaving it on the 100 setting even though the brp tech support guys advise against. As the dealer says if it were that important brp would send out notices and bulletins.

[kamie]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SEAHORSE &raquo;</TD></TR><TR><TD CLASS="quote">

The other thing to realize is the most boats are not fully on plane at those rpms and can slow and speed up as the hull tries to find its way between running level and plowing water.</TD></TR></TABLE>

I agree with you, but I don't believe the engine should drop all the way to idle? I would expect the RPM's to bounce around a bit and continue to bounce around, until I took some action. In my case if I don't touch the throttle at all, it will drop down thru the RPM range to idle as if I pulled back on the throttle. It is going into a new Mechanic on Monday as the dealer I got the engine from can no longer service Evinrudes.

[JOE MAN]

I HAVE A SIMILAR PROBLEM WITH A 150 E-TEC DPXSUF AND A BRP VIPER STAINLESS PROP 14-3/4 X 17. AFTER ANCHORING FOR ABOUT 4 HOURS, IT STARTED UP BUT RAN ROUGH FOR A COUPLE OF MINUTES. I SHUT IT DOWN TO CHECK IF THE PROP WAS CAUGHT ON ANYTHING. EVERYTHING WAS CLEAR. IT WOULD NOT RESTART. THE PRIMER BULB FELT SOFT AND IT HAD A LOT OF AIR IN IT. AFTER 10 min OF CRANKING AND PRIMING THE FUEL BULB FOR A WHILE IT STARTED. I PROCEEDED TO TROLL AT 12 MPH BECUASE IT WAS DARK AND VERY CROWDED. AFTER 5 min OF 12 MPH AND 2500 RPM, THE ENGINE SUDDENLY ACCELERATED TO 3700 RPM AND 30 MPH. I QUICKLY THROTTLED BACK TO NOT HIT THE BOAT IN FRONT OF US AND SET SPEED TO ABOUT 12 MPH AGAIN. AFTER A FEW MINUTES IT DID THE SAME THING AGAIN AND KEPT DOING IT ALL THE WAY TO THE DOCK. I NEVER NOTICED THIS BECAUSE I NEVER TRIED TO HOLD A SLOW SPEED BEFORE AND ONLY HAVE 12 HOURS ON THE MOTOR. I AM MAKING AN APPOINTMENT AT THE DEALER TO HAVE THIS CHECKED OUT. I WILL POST WHAT THEY FIND. ANY INFO ON THIS OR SIMILAR PROBLEMS WOULD BE GREATLY APPRECIATED.

[RUSTY63]

Welcome to the BBC.
Please turn your cap locks off.

Please post your serial number.

[JOE MAN]

150 DPXSUF
05166268

Could the throttle cam and tps calibration posted in a previous thread possibly solve this problem? Thanks.

[RUSTY63]

It may.

Have your dealer check the map you are running.

[JOE MAN]

Check the MAP sensor? Or is MAP something else? If so, why, is there a retrofit sensor that replaces the original.

I called the dealer to make an appointment and found out that they want $150.00 for a launch and retrieval fee to do on water testing plus labor time. Probably about $350.00 just to check it out. They recommend waiting for the 20 hr check and then bring it in, which is what I will do.

HAPPY FOURTH OF JULY!!!

[SEAHORSE]

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JOE MAN &raquo;</TD></TR><TR><TD CLASS="quote">Check the MAP sensor? Or is MAP something else? If so, why, is there a retrofit sensor that replaces the original.

I called the dealer to make an appointment and found out that they want $150.00 for a launch and retrieval fee to do on water testing plus labor time. Probably about $350.00 just to check it out. They recommend waiting for the 20 hr check and then bring it in, which is what I will do.

HAPPY FOURTH OF JULY!!! </TD></TR></TABLE>


There is no 20 hr. check for an E-TEC. The MAP is the software, or set of instructions, for the engine computer. There is also a throttle position sensor (TPS) setting that should be checked using the laptop to smooth the combustion transition. It should take only about 15 minutes or so to do everything. Most dealers will do it in the parking lot when you bring the boat in, and then get you on the way.

If you don't have a trailer, then you may try to "bribe" a tech to come out or pay the dock call fee.

[JOE MAN]

Thanks SEAHORSE. When I trailer it to the dealer I will ask them to check this.

They say the 20 hr check is just to check the gear lube in the lower unit for metal and probably look over a couple of other things quickly. It was included in the price of the boat, so I guess it can't hurt.

[ghind]

Joe,

If your fuel bulb was soft, it sounds like you have a fuel line or tank issue, not an engine issue. But you will have an engine issue if you let it continue.

Somebody posted a while back about a 150 e-tec that had problems at low speed skiing revs and that BRP developed a new fuel map for it. They had done all sorts of things, throttle cams etc and it was the map that fixed it.

First things first though, like Seahorse said, get your prop right. Then ask for help getting the right map. No point getting a map for a dud prop then getting the right prop and having to fix it again.

The guy with the 150 raved about how good it was with the new map and how helpful BRP were. I'm sure you will get it fixed, but find out what WOT RPM you need and get the right prop for it.

I always find out the maximum WOT RPM and set my boat up so that with a light load, it will turn them. Eg if 5800rpm is the max, I setup for exactly that. Then with my normal load, I am still turning plenty of RPM



Modified by ghind at 10:04 PM 7/8/2007

[ghind]

I found the post where they had problems with the 150 and different rev ranges, here it is

http://www.bbcboards.net...87853

[JOE MAN]

ghind

Thanks for the post. I have been busy with home projects and not had the chance to look at things. I am very confident this problem will be resolved as soon as I get some free time. Not happy about not fishing for a few weeks, but that's the way it goes. Thanks again for the post and I will see what my local Evinrude dealer has to say when I bring it over.