98 Ficht 150 Idle Problem

[gradytom]

Big surprise right?
I have run these twins since 2004 w/no problems, they were
updated with pinned heads in 2001.
Both engines run off the same fuel, but I have changed seperators and fuel filters. Batteries are good.
I run good gas, use xd50, decarb, gap and index champion plugs and use seafoam w/every fillup. Compression is good at 115 on starboard bank, 110 on port, the other motor is 110 across the board.
Starboard engine started having trouble maintaining idle recently.
Will run at 1000rpm and up with no problems, but as soon as I go to idle
(neutral) it sputters and dies. No check lights come on, and it will restart
no problem.
I have the service manual and ran the onboard (dashboard) diagnostic and got a code 16, crank sensor misadjusted or damaged.
Verified resistance of sensor is w/in spec @ 910ohms. Have not checked air gap of sensor yet.
Local evinrude guy is too busy to help, says it may be an ignition module or ecm, both expensive.
I'm thinking of swapping the ignition module from the other motor to see if I can narrow this down, apparently I can't swap powerpacks.
Anything else come to mind?
Thanks
Tom

 

[woody66912]

Re: 98 Ficht 150 Idle Problem

you can swap out ecu's just to see if that fixes the idle problem but it will run rich or lean.

 

[gradytom]

Re: 98 Ficht 150 Idle Problem

Thanks Woody, I'll keep that in mind and maybe try it if the ignition module checks out.
I was told each ecu is tuned for a specific set of fuel injectors, and a diag program on a laptop is needed to retune them.
If I have an ecu problem can I send it to DFI Technologies directly for repairor do I need to go thru an Evinrude dealer?
I also understand that Evinrude/Bomb no longer repairs them, only replaces.
I'm going to also try to find another dealer who is more helpful.
Any other input from you would be appreciated.
Thanks
Tom

 

[gradytom]

Re: 98 Ficht 150 Idle Problem

Still looking for a solution.
Was thinking of swapping ignition modules (not the ECU) from the "good" motor to the "bad" to rule it out as a cause but was told by yet another
Evinrude tech not to do this.
Any thoughts on this?
Still have to check resistance of the throttle postion sensors range of travel
and regap the crankshaft sensor.
3 different Evinrude service shops have told me it could be at least a month before they can even look at it, and none of them currently have working diagnostic software for one reason or the other.
Am wondering that if its the ECM and it needs reprogramming or repair, w/o
the software available I'm going to be screwed anyway.

Am getting the feeling they don't WANT to work on it.

Going to drive 65 miles today to yet another Evinrude shop to speak w/them in person.

Had one service tech ask me if I could live w/o idle, valid question I guess but WTF.
Any suggestions would be a great help
Thanks

 

[woody66912]

Re: 98 Ficht 150 Idle Problem

grady yes you can swap ecu.to eliminate idle problem as long as these engines are the same model i do it all the time.the injector coefficients will not be correct as i stated it will run rich or lean at idel. or put another way it's going to run like a bag of crap.but it should idel below 1000 rpm.the last time i encountered theses systoms .hears the chain of events i did not have a emm Electronic management module to swap. on cold start up it would run for 30 sec then it would start to lope/lope/lope/lope.then die i sent emm to BRP they ran my emm on there engine they foudn nothing wrong with it.mind you if i put 50/1 mix in a squirt bottle and sprayed a mist into the intakes it would run below 1000 after 5 more phone calls to tech service they finally sent me a emm witch fixed the problem.now usely when a warranty part is sent back it just goes to the warranty dept.this one they wanted label warranty[ att tech service.] they wanted to dig deeper into this emm as it stumped them to.i had 32 hours of diag time into this engine. [it got personal]i was also promised a return phone call as to what failed in the emm.that was 3 1/2 years ago. i think they lost my number.swap out emm but only run engine on the muffs.

 

[woody66912]

Re: 98 Ficht 150 Idle Problem

grady yes you can swap ecu.to eliminate idle problem as long as these engines are the same model i do it all the time.the injector coefficients will not be correct as i stated it will run rich or lean at idle. or put another way it's going to run like a bag of crap.but it should idle below 1000 rpm.the last time i encountered theses symptoms .hears the chain of events i did not have a emm Electronic management module to swap. on cold start up it would run for 30 sec then it would start to lope/lope/lope/lope.then die i sent emm to BRP they ran my emm on there engine they found nothing wrong with it.mind you if i put 50/1 mix in a squirt bottle and sprayed a mist into the intakes it would run below 1000 after 5 more phone calls to tech service they finally sent me a emm witch fixed the problem.now normally when a warranty part is sent back it just goes to the warranty dept.this one they wanted label warranty[ att tech service.] they wanted to dig deeper into this emm as it stumped them to.i had 32 hours of diag time into this engine. [it got personal]i was also promised a return phone call as to what failed in the emm.that was 3 1/2 years ago. i think they lost my number.swap out emm but only run engine on the muffs.

 

[chrisa]

Re: 98 Ficht 150 Idle Problem

I think you have to address the codes before you can proceed. I'd bet your problem is directly related to that CPS. You can swap those position sensors without any problems...use a feeler goge to check the gap.

 

[gradytom]

Re: 98 Ficht 150 Idle Problem

Thanks for the replys, I think I've solved the problem.
I found a barely loose ground connection from the starter solodoid to the block, tightened it up and she idled just fine.
Sometime its the simplest things that get ya.
Had visually checked grounds b4 but this one had a little wiggle room.
Buried in the service manual is also a one liner saying a code 16, crank position sensor, is sometimes thrown as a result of fouled plugs, go figure.
This was probably showing as a result of trying to start the motor over and over, creating a rich condition.
Hoping thats it, gonna run her today!
Thanks

 

[woody66912]

Re: 98 Ficht 150 Idle Problem

sounds like your a winner on this one good luck!