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#12299550 - 06/18/17 12:59 PM 2006 115 Mercury Optimax
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 11086
Loc: Littlefield Tx & Lake A. H. US...
Surely someone has hit this. No alarms, no codes, fuel - air pressures good. Acts like motor is in protection mode. 2000 rpm max. Idles perfectly. Throttle cable is a little stiff. With throttle to 2k, shoot air intake with Sea Foam Deep Creep and it picks up rpm. I put an electric low-pressure fuel supply pump and # 3 ign coil on it 2 years ago. Ran fine last year, first time did fine this year but second time out it started this.
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�The world will not be destroyed by those who do evil, but by those who watch them without doing anything� Remember what He has done and remember that He is not done yet! GOD IS GOOD

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#12299674 - 06/18/17 02:41 PM Re: 2006 115 Mercury Optimax [Re: gary purdy]
HoustonCatfisher Offline
Outdoorsman

Registered: 01/31/14
Posts: 175
Loc: Houston, Texas
Computer controlled. Different things could cause that. Best not to guess but to hook up to diagnostic to determine problem.
_________________________
Licensed Texas freshwater fishing guide

http://houstoncatfish.webs.com

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#12299728 - 06/18/17 03:29 PM Re: 2006 115 Mercury Optimax [Re: HoustonCatfisher]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 11086
Loc: Littlefield Tx & Lake A. H. US...
Originally Posted By: HoustonCatfisher
Computer controlled. Different things could cause that. Best not to guess but to hook up to diagnostic to determine problem.
Did you not see, no codes, no alarms?
_________________________
�The world will not be destroyed by those who do evil, but by those who watch them without doing anything� Remember what He has done and remember that He is not done yet! GOD IS GOOD

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#12299940 - 06/18/17 06:37 PM Re: 2006 115 Mercury Optimax [Re: gary purdy]
HoustonCatfisher Offline
Outdoorsman

Registered: 01/31/14
Posts: 175
Loc: Houston, Texas
Doctors = diagnostic computers. Always get a second opinion if it is really important.
_________________________
Licensed Texas freshwater fishing guide

http://houstoncatfish.webs.com

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#12300056 - 06/18/17 08:00 PM Re: 2006 115 Mercury Optimax [Re: HoustonCatfisher]
BPbassp Offline
Outdoorsman

Registered: 05/08/10
Posts: 24
Loc: Laredo, texas
Hey Gary,

Just went through this same issue with my opti 250. Check the neutral switch located under cowling . Mine was sticking and engine would only rev to 2k and start jumping around while the smart craft check engine horn was blasting. A quick way to diagnose on the water is to disconnect the neutral switch and run it to see if it returns. At home , engine off, Locate the shifting mechanism under cowling and shift into foward, look for the switch to pop out ( should be visible) mine was gummed up with grease which caused it to stick. On the water I was able to get her to run by shifting from foward to reverse and back and she would run. Optis have a neutral rev limit at 2k, when that switch isn't working it thinks the motor is in neutral causing your issue. Hope it works for you. ( I have a mechanic friend with computer and it didn't show anything)

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#12305151 - 06/21/17 04:42 PM Re: 2006 115 Mercury Optimax [Re: gary purdy]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 11086
Loc: Littlefield Tx & Lake A. H. US...
No shift interrupt switch on this motor. Motor will only start in neutral. I ordered another scanner from http://www.rinda.com/marine/
_________________________
�The world will not be destroyed by those who do evil, but by those who watch them without doing anything� Remember what He has done and remember that He is not done yet! GOD IS GOOD

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#12326782 - 07/06/17 01:12 PM Re: 2006 115 Mercury Optimax [Re: gary purdy]
gary purdy Offline
TFF Guru

Registered: 05/24/03
Posts: 11086
Loc: Littlefield Tx & Lake A. H. US...
Update. Motor had map sensor and intake air temp sensor fault. 54 hrs TT and had 48 alarm entries. Runs great now.
_________________________
�The world will not be destroyed by those who do evil, but by those who watch them without doing anything� Remember what He has done and remember that He is not done yet! GOD IS GOOD

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