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525 Slow to respond?

Old 05-23-2011, 11:54 AM
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Default 525 Slow to respond?

Put the boat on water for my first time last weekend and when you push throtte the response is real slow. 3-5 seconds and then starts to pull. I was wondering what are the systoms of bad MAPP Sensor. Any ideas would be appreciated.
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Old 05-23-2011, 12:17 PM
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A bad MAP sensor should trigger an alarm. I'd get the motor scanned.
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Old 05-23-2011, 08:48 PM
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Is it breaking up as it accelerates?
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Old 05-24-2011, 11:13 AM
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Originally Posted by EdNewman
Is it breaking up as it accelerates?
No, it justs seeems to be delayed on powering up. In my area I have to go some distance to get to a scan tool also.
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Old 05-24-2011, 11:39 AM
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Originally Posted by bsboss
In my area I have to go some distance to get to a scan tool also.
It would be money well spent to buy a scan tool or diacom software.
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Old 05-24-2011, 12:15 PM
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Originally Posted by Dave M
It would be money well spent to buy a scan tool or diacom software.
Thats what its looking like, too many sensors to guess at. Any suggestions on scan tool? I am looking at the Rinda basic but wondering how in-depth they read?
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Old 05-24-2011, 12:59 PM
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Originally Posted by bsboss
Thats what its looking like, too many sensors to guess at. Any suggestions on scan tool? I am looking at the Rinda basic but wondering how in-depth they read?
I use Diacom, I have a 525 now, and used it with a 496HO also.
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Old 05-31-2011, 10:55 AM
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I did check codes and have 3 active, they are 75,118,191. The wot rpm is also down. Starting to wonder if may intake vacum leak could cause this. I don't have a book to break down these codes, so if someone could help on this matter I appreciate it.
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Old 05-31-2011, 08:56 PM
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Could It be something as simple as too much prop pitch?
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