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merc 496 mag dts problem

T

tazdevil

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i have a merc 8.1l base serial # 0w695839 if i decode this thru merc it is an 8.1 base inboard but my pcm says my2002 #863620-2. and #859610 can this be reprogrammed to the engine specs with dts
 
Your part numbers shuld probably be verified...the second one isn't an ECU.

The ECU's can be reprogrammed if one has the tools to do it...
 
on the main sticker below the barcode it is written 859610 then onthe other sticker the on the pcm the other two numbers. can the pcm be reprogrammed on a stand alone basis with a 496 mag dts spec
 
For a starting point, you're few options would be, first call mercruiser customer service at 920-929-5040 with all your info or email them your question at http://www.mercurymarine.com/contact-us/ under Contact MerCruiser Customer Assistance inside the link provided.

Now keep in mind that customer service won't be able to help you by giving you authorization to mail in your PCM to them directly but they should be able to give you enough accurate advice to say if this is possible or not. If it is possible, then you will need to get in touch with a recommended Mercury/Mercruiser dealer in your area and have them mail it into the Mercruiser factory for recalibration. It's supposed to be done within a week turn around time if next day aired back and forth within the U.S.

You may find the last few post interesting
http://forums.iboats.com/mercruiser-i-o-inboard-engines-outdrives/2005-5-0-alpha-mercruiser-ecm-problem-533610.html

Outside of the factory, There are only a small few aftermarket companies that have the capability of recalibrating the 555 ECM/PCM's but I honestly don't believe they would have the programming available to make a change such as this.

If it can be done outside of the factory, then Dustin Whipple of Whipple Industries superchargers would be the guy to talk to for your best advice.
http://www.whipplesuperchargers.com/content.asp?PageID=57

One other place that has some capabilities of making changes to the 555's would be Simon Motorsports out of Ramona, CA at 760-440-9334
http://www.simonmotorsports.com/

What happened to your original PCM?

Since you do have a DTS system (Digital Throttle and Shift), You'll need to bear in mind that once you do get a working PCM, you are going to need to higher a Mercury Premier dealer that has the capability of linking your command module at the helm to your Computer (PCM).

Note for future reference, When you move the throttle levers at the dash, the Command Module at the helm sends a message to the Computer (PCM) on the engine telling it to move the Electronic Throttle Control (ETC) on the engine. When the throttle levers are at idle, the engine PCM operates the ETC to keep the engine at the proper RPM. Note, This system does not utilize an Idle Air Control Valve as the engine control system is actually opening and closing the throttle blade to maintain an idle speed as needed.
 
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