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Dec 30th, 2023
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 1999 Merc 225 efi problem
#3643296
07/01/09 03:22 AM
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Joined: Jun 2008
Posts: 309
Progator James
OP
Angler
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OP
Angler
Joined: Jun 2008
Posts: 309 |
Last time out I just got up on plane turning about 4000 rpm and my motor started going from 4000rpm down to 1500 rpm and so forth while the temp and oil lights buzz and blink 2 times....
Any ideas what is happening???
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Re: 1999 Merc 225 efi problem
[Re: Progator James]
#3643330
07/01/09 03:31 AM
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Joined: Oct 2004
Posts: 12,182
Mike Keenan
TFF Guru
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TFF Guru
Joined: Oct 2004
Posts: 12,182 |
james, I would get with opti on here and ask him. he is one of the greatest master tech's on here.
R.I.P. Mike "pappy" "broken rod" Green born 07-16-62 on to better fishing 06-10-08. www.basscat.com
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Re: 1999 Merc 225 efi problem
[Re: Mike Keenan]
#3643422
07/01/09 03:57 AM
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Joined: Jun 2008
Posts: 309
Progator James
OP
Angler
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OP
Angler
Joined: Jun 2008
Posts: 309 |
Thanks Mike, I'm hopimg he will see this and chime in...
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Re: 1999 Merc 225 efi problem
[Re: Progator James]
#3644040
07/01/09 01:02 PM
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Joined: Jun 2004
Posts: 1,509
OPTI
Extreme Angler
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Extreme Angler
Joined: Jun 2004
Posts: 1,509 |
James...There two reasons this senario will happen one is overrev condition but you said you was only turning 4500 so that probably not it the other is a bad thottle position sensor or it it is out of range or a bad temp switch I would bet it is the thottle sensor because that controls the fuel injector pulse width ......OPTI
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Re: 1999 Merc 225 efi problem
[Re: OPTI]
#3646787
07/01/09 11:25 PM
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Joined: Jun 2008
Posts: 309
Progator James
OP
Angler
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OP
Angler
Joined: Jun 2008
Posts: 309 |
Ok Opti, is this somethimg I can change or is it difficult to do???
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Re: 1999 Merc 225 efi problem
[Re: Progator James]
#3649240
07/02/09 05:27 PM
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Joined: Jun 2004
Posts: 1,509
OPTI
Extreme Angler
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Extreme Angler
Joined: Jun 2004
Posts: 1,509 |
Its esy to change but then it has to be calibrated to proper voltage and a DDTor a volt meter with a special harness has to used to do this....OPTI
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