2002 Mercruiser 496 Mag CPS question
 

All,

I am new to this forum but wanted to reach out. I just bought a boat with a 2002 496 Mag Base model Bravo III outdrive. Serial Number M084202

The head gaskets went out on my first outing. It over heated and I shut it down and was towed in. I took it to the shop and they replaced the head gaskets.

It started twice but It had very high RPM, then would not start. Two beeps every two minutes. I bought a scan tool to troubleshoot, It showed high TPS.

We replaced the TPS, but still wouldn't start and could not clear the codes. I pulled the ECM (ECM 555) and sent it for evaluation. Diagnosed as short in ground burned up the ECM. They repaired it and it is on its way back with instructions to identify the short before plugging it back in. (They thought a sensor/IAC but could not rule anything out.)

The mechanic is thinking the cps might be bad as well since there were no rpm showing while cranking. I saw your posts regarding the cps no longer being made and having to replace the timing gear and cover to get the new cps to work.

However, that appeared to be for serial numbers 0M026000 - 0M319190 which use part number 881666 , was black and is NLA.

When I look up the sensor for my engine serial number on marineengin.com, it only lists part number 892615002. Does this mean, I got lucky and the sensor for my engine is not NLA?

Your advise is appreciated.

thank you,
wmrath

BUP is the expert and he may/will chime in on this subject...

I hate helping out when a competitor is used per what I do as well --- ecm / pcm repair plus they never give out the info so it does not happen again per what needs to be looked at / fixed on the engine side.

Here is were I am coming from, This has become so common - the competitor offers zero help after the fact plus how many boats have they wrenched on ? Then after the fact I get the call or PM asking for help while the competitor made the money on that app.

I will give out a freebe -- NO tach --- no rpms --- no start = CRANK POSITION SENSOR remember that next time who help and who most likely would not have nor come up here to post the fix. Thank you

Thanks for the good words and hope you got all your stuff.

Thank you for the response. I did not mean to step on any toes. I thought this was a forum to for boaters to ask questions. I am new to this forum and did not know I even mentioned a competitor.
I was trying to provide some history so as to help answer my question and how I came to my conclusion. I thought the knowledge about the ECM being bad might help

My question was not, Is it the CPS but which CPS do I need?

All the posts I have read only talk about two different version of the CPS (2001 - part no : GM 12575182/Mercury 881666 and 2004+ - part no:GM 12591720/Mercury 892615002

I did see the post by hog with the three different timing gears, but did not see a reference to the CPS for the 2002-2003 gear.

This prompted me to research three CPS versions:

2001 - Part No: GM 12575182/mercury 881666
2002-2003 - Part No: GM 12575183
2004+ Part No: GM 12591720/Mercury 892615002

If I were to go with the newer tan colored CPS, I understand it would entail replacing the timing gear and timing cover to handle the new CPS configuration.

I can get the older CPS both the 12575182 and 12575183 which are physically indistinguishable from each other but have slightly different operating parameters. Knowing I have a 2002 engine and never seeing any posts regarding the 12575183 for marine applications, my question is, based on the Engine serial number, is it a 2001 configuration or 2002 configuration and which CPS it right for my application (12575182 or 12575183)?

Thanks again for your time and patience as I am new to the larger engines and boats, having moved from a Volvo 4.3GL in a 18ft Larson to a Mercruiser 8.1L in a 28ft Crownline. I do most of the work myself (manifolds, risers, tune up, oil change, impeller, trailer, etc) but this boat/engine is new to me and the learning curve is a little steep for a novice.

In all the forums I have read, BUP appears to be the absolute expert and is mentioned on every forum I have read regarding this matter and was really hoping he would chime in..

wmrath

The previous CPS is NLA but the GM and standard part is
2002-2003 - GM 12575183, Standard PC 949, Merc 881666 NLA, Block 2XA, 2XW, 3XA, 3XW


https://www.rockauto.com/en/partsear...rtnum=12575183

https://www.oreillyauto.com/detail/b.../pc949/5814865
Your good OSO and is a great place for info, and can get a bit warmer responses at iboats.com

Thank you AllDodge!

I appreciate the help!

Maybe I can get back on the water this weekend! :)

Again..Thank you AltDodge...I have the CPS coming from RockAuto. You confirmed what I was thinking would be the correct CPS.

BTW...anyone needing the 2001 version of the CPS...they are available at RockAuto as well: ... I am not allowed to post urls yet but just look up
Holstien Part Number: 2CAM0184 or Standard Parts Part Number PC948 on the RockAuto website.

Wmrath

Thank you AllDodge!

I appreciate the help!

Maybe I can get back on the water this weekend! :)

Again..Thank you AltDodge...I have the CPS coming from RockAuto. You confirmed what I was thinking would be the correct CPS.

BTW...anyone needing the 2001 version of the CPS...they are available at RockAuto as well: ... I am not allowed to post urls yet but just look up
Holstien Part Number: 2CAM0184 or Standard Parts Part Number PC948 on the RockAuto website.

Wmrath

Kind of ironic that the guy who refuses to pay for any type of membership and who uses OSO for free to solicit business would get his panties in bunch about this.

Exactly.......

So single me out right fellers and I give out zero help plus correct OEM help and many service Bulletins that cost me money for free on this site also my phone number is an open avenue for many up here about 14 hours per day. - that end of it is OK and fine then --

Next is many who do not spend a dime up here plus never gave one ounce of info to help others but over use the swap shop for FREE everyday but thats freakin OK -- to funny fellers. Also OSO does not market itself to even warrant paying dues. I have bought classified ads up he in the past. OSO does not market itself to bring outside people in.

So can you imagine working all day with paying customers and 1/2 your day https://cimg3.ibsrv.net/gimg/www.off...7c6f8cf6ef.jpg
get this from people on this site

And I have brought people to this site as well whom would have not bothered. Some never even heard of OSO who has boated for years or even in the marine industry

And how many engine serial numbers I have ran for free from posters up here ? in the 100 s.

I'm a nobody here, but do agree with BUP. I say his info is worth way more than whatever your dues cost.

Thank you

so I will see how many more now will come up here and give me some credit as being an asset. I will keep that in mind who does not and should have as well because of the many times I have helped them out on my dime never asking for a plug or any credit nor any money.. So for any of the boaters on OSO want to chime please do so that I have helped out many of times and still currently do so. EVEN TODAY 2 people already from OSO. .

And for the record many and do I mean many of times I have told people who has called me to call BAM or Diamond or Teague or CP to get that part because they support OSO. Jeez how funny that works out being a non paying member.

And for the record many who post on the swap shop are running a business there for free and Im the one that gets the chit. Amazing.

Griff how come I do not see you posting about that ^^^ ? Maybe because you have bought some parts from these guys who run their business on the swap shop ? So lets be fair about this, Im the issue at hand ? Watch now how OSO bans me

If you feel somebody is running an actual marine business and has a physical address where they operate their business, such as yourself, and is posting in the swap shop, please use the report post option because person's, such as yourself, who run an actual business are not allowed to post things for sale in the swap shop.

The issue is you seem to believe your free advice to members is so much of an asset to OSO that you are above the advertising rules.

I usually don't get involved in this type of post but felt I had to give my opinion.

BUP donates a lot of his time and knowledge helping many people out on this site Does he get sales from it sometime? Sure he does. A lot if his help results in no sales though. He has personally helped me out over the phone on his dime. He saved me a lot of time and i'm sure wasted money on parts that I would have bought (not from him). I tried hard to give him some money as I felt bad for all the time he spend with me on the phone, late at night. He refused to take a penny. He said "I didn't work on your boat, I don't want anything from you". I was shocked. I tried again but he refused. I come to this site everyday to try to learn. I learned the most from him (496 owner).

I'm sorry I don't agree with the above post. I know I am a no body here. I try to contribute to helping others on this site when I can. Unfortunately it isn't too often.

I think this is completely misguided to single him out.

What about the numerous boat manufacturers that post about their six figure boats that don't pay for any type of membership? What about Tres which is always soliciting for his safety courses and does nothing more on site to help anyone out for free? I have nothing against any of the above I just mentioned. I have never met any of them or have had and dealings with them. Just my observation.

Just my .02

I for one appreciate all the help and info from all the pros and everyone else on here. BUP has answered my phone calls at night and on weekends to help me get back on the water.

I’m an old guy and shoot my mouth off many times and make all kinds of mistakes, but I’m just try to help. This is probably stupid for posting, but have been doing dumb things for many years and don’t see it stopping now

All forums are here to make money for the owner. The owner sets the rules, and we get to decide if it’s worth joining. I will agree BUP and MUC (iboats.com) are Merc Master Techs and are assets to any forum they choose to participate. Forums are also the Wild West where feelings get hurt easy, but they “should” all be required to be civil.

That aside, I have been blown away by the amount of knowledge here in the high performance boat/motor building. I just try to take in as much as possible so my thanks to all OSO folks

The easy thing, is if someone is asking for help, but the person being asked doesn’t feel they deserve their help, don’t comment.

As for OSO cost, maybe some fans could chip in to pay the dues so they can send messages anytime because there will be no 10 email limit. Then there is no 10 email limit, owners make a little extra to pay expenses, and no need for a post about “please empty your inbox”

Man you are so correct and I would focus more on this post below from the link I am providing as to why OSO does not care about you nor issues you had because a guy pays them money while you had a beef with and his service. So the bottom line here you can have beef because of bad service and it does not matter because of the ALL MIGHTY DOLLAR. Yes I know I am so off base here.

https://www.offshoreonly.com/forums/.../360969-a.html


Also Is there any auto sites that you post on and willing to share ? And if you are paying member on those sites ?

Asking if you would share about - do you own your auto repair business or work for a company ? I am curious thats all

No I can careless what anyone does up here however and however they make money. Its their biz what they want to do - I do not have the time to worry about nor care if posters are breaking the OSO rule book. It does not effect me one bit nor what I do in life.

Today I brought all that because for some reason your badge singled me out here in a manner as you being a police officer and mod on here IMO was not warranted. You have never heard me say before this why is this person allow to do that and they are breaking OSO rules. I can careless

Thanks guys for your time with replies to put my name is a GOOD MIX up here.

I have never disputed BUP's knowledge or the help he gives to OSO members both on and off of the forums.
BUP has given lots of free advice on OSO. BUP has also made a lot of money from OSO members that would not have a clue who he was without OSO.

I have also reached out to him via PM about becoming a Commercial Member due to the many complaints from paying advertisers.
Thus he could follow the OSO rules and promote his business at the lowest cost to him.
He has made no attempt to purchase the Commercial Membership or any membership EVER.

This is about keeping OSO alive. Why would anybody want to pay to advertise on OSO when he does it for free??

Instead of addressing the real issue he tried to deflect to what other people are doing wrong on OSO, then he accused me of favoring somebody because he thinks I bought stuff from that person?? I'm really not sure what or who he is talking about. I have purchased very few things from the swap shop.

If I had really wanted to ban BUP, I could have long ago for violating the advertising policy, but instead gave him casual warnings. This was only because he does help so many OSO members.
We shall see what happens from here if the advertising policy is violated.

Another ironic thing........BUP never even answered the OP's question..........AllDodge did.