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Author Topic:   Mercury Repair Part Prices and Part Numbers

sciguy20 posted 10-02-2009 09:08 PM ET (US)
Howdy Folks. I have a 1998 [Mercury OptiMax] 150 XL [serial number] OG743453. The powerhead on this motor seems to have been replaced, as it says it has a 1999 [model year] on it. I have a slightly rough idle and it occasionally quits while trolling at idle speeds. It was suggested to me that this may be [caused by a defect in] the TPS's. It has two, I assume one for low rpm and th other for higher. I thought I'd try to replace this and see if it takes care of the problem. There's also an occasional problem with lots of smoke and oil upon re-starting after sitting for an hour or so, and then it runs clean.
I need to find part numbers to check on prices for this. It seems like a pretty simple replacement. No significant adjustments necessary, right?
Many many thanks for any help!
jimh posted 10-04-2009 08:40 PM ET (US)
Try Mercury Parts Express website.
sciguy20 posted 10-05-2009 07:15 PM ET (US)
Thanks Jimh--- I had looked there before, but i can't find the throttle position sensor assembly in any of their diagrams; unless it's called something else? I have the service manual for this engine, but not the part numbers.
Thanks
BKelly
kglinz posted 10-05-2009 09:00 PM ET (US)
Try this http://www.ishopmarine.com/ishop/jsp/AsplIsmCcatViewBase.jsp?&lvlCode=4& pCode=C0023468&path=MM~A0000001~M0001032~M0001033~C0023468& isFromCMS=false&hideAdd2CartButton=&isStandAlone=&is4CmsShop=& reqln=Unknown&reqem=Unknown&reqph=Unknown&reqFor=29&req4Browse=1&docId=& docName=&isForSupStore=false&cCatFilter=&eCatSupFldr=
sciguy20 posted 10-06-2009 08:37 PM ET (US)
That was it-- it was also in the diagram from jimh-- I just didn't think it would be part of the engine block diagram!!
I certainly appreciate the help, gents!

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Author	Topic: Mercury Repair Part Prices and Part Numbers
sciguy20	posted 10-02-2009 09:08 PM ET (US) Howdy Folks. I have a 1998 [Mercury OptiMax] 150 XL [serial number] OG743453. The powerhead on this motor seems to have been replaced, as it says it has a 1999 [model year] on it. I have a slightly rough idle and it occasionally quits while trolling at idle speeds. It was suggested to me that this may be [caused by a defect in] the TPS's. It has two, I assume one for low rpm and th other for higher. I thought I'd try to replace this and see if it takes care of the problem. There's also an occasional problem with lots of smoke and oil upon re-starting after sitting for an hour or so, and then it runs clean. I need to find part numbers to check on prices for this. It seems like a pretty simple replacement. No significant adjustments necessary, right? Many many thanks for any help!
jimh	posted 10-04-2009 08:40 PM ET (US) Try Mercury Parts Express website.
sciguy20	posted 10-05-2009 07:15 PM ET (US) Thanks Jimh--- I had looked there before, but i can't find the throttle position sensor assembly in any of their diagrams; unless it's called something else? I have the service manual for this engine, but not the part numbers. Thanks BKelly
kglinz	posted 10-05-2009 09:00 PM ET (US) Try this http://www.ishopmarine.com/ishop/jsp/AsplIsmCcatViewBase.jsp?&lvlCode=4& pCode=C0023468&path=MM~A0000001~M0001032~M0001033~C0023468& isFromCMS=false&hideAdd2CartButton=&isStandAlone=&is4CmsShop=& reqln=Unknown&reqem=Unknown&reqph=Unknown&reqFor=29&req4Browse=1&docId=& docName=&isForSupStore=false&cCatFilter=&eCatSupFldr=
sciguy20	posted 10-06-2009 08:37 PM ET (US) That was it-- it was also in the diagram from jimh-- I just didn't think it would be part of the engine block diagram!! I certainly appreciate the help, gents!