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trying again

Old 04-14-2003, 06:55 AM
  #1  
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i posted this on friday morning and got no responses. i can't believe someone out there doesn't have an answer for me???? here it is again.

"i posted this in the boaters forum but figured i might get more responses here. i have a 2002 f225 with an analog tachometer. the needle doesn't drop below 1000. it stays at 1000 even when i start it. the normal idle should be around 700 or so, but it still shows 1000. i believe it's accurate once i get over 1000rpm's. top end is showing around 5800 or so, which from what i've read is pretty accurate. with the quietness of the 4 stroke and "extra" noise from wind/waves/music, it would be nice to be able to look at the tach to see if it's running. (i know, i can look at the voltmeter) there must be some type of adjustment for this???"

thanks!
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Old 04-14-2003, 09:40 AM
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what has the mechanic said?
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Old 04-14-2003, 09:48 AM
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Default trying again

Sorry if you felt ignored. I generally do not read posts that are not about a specific topic as I don't have the time to read every post. I usually only read those posts that have a subject that interests me. Your subject was vague so I did not read it before . . . Thats me and that how I use the board

Now to your question. Most good mechanics have a tachometer in their tool kit that they use to check engines. What does he say?

HOWEVER, if your tach reads 1000 rpm it leads me to believe that either the engine is turning that fast or the tach is busted. One question, did your tach ever read below 1000 rpm?

Miss-Be-Haven
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Old 04-14-2003, 09:49 AM
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haven't asked yet. figured he might say i need to bring it in so he could look at it and i wanted to pick all the knowledgeable brains on this board before i went thru that.
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Old 04-14-2003, 10:00 AM
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auguste, i bought the boat used about a month ago. the tach has always been at 1000, never 0. just to clear it up, i don't think it's actually reading 1000, because the needle is on that when the boat isn't even running. kind of like your bathroom scale being set at 5 lbs instead of 0 you get on and weight 185 when you know you actually only weigh 180. does a tach have and adjustment knob similar to a scale? or some other way to adjust?
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Old 04-14-2003, 10:09 AM
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Default trying again

There are several " Fail safe conditions " that would cause the idle to go to 900 RPM in neutral. This is caused by a Abnormal signal from one of several sensors. Have your dealer check the codes in your Electronic Control box. If thats OK its probably just rigging or an adjustment. Isn't it still under warranty
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Old 04-14-2003, 11:46 AM
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it doesn't "go up to 900". the needle is at 1000, regardless if it is running (at idle) or not. it works fine once i get over 1000, but when i back down to idle or turn off the motor the needle just stays at 1000, it doesn't go down to 0. that's why i used the bathroom scale analogy, thinking maybe i wasn't explaining myself right. as far as the warranty goes, the motor is but i'm assuming the tachometer falls under the normal "1 year warranty" for all components. i will have to check it out though if i can't get any other tips from here.
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Old 04-14-2003, 12:00 PM
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Default trying again

Sorry. I guess I should read more and write less. Glad it's just a Tach problem. Your dealer will probably just trade it out.
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Old 04-14-2003, 06:48 PM
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Check the back of the tach. If it's a digital tach, it will have three dip switches that need to be in the correct positions.
Your choices are "on" and "off"
1st switch is for the trim sensor type:
2 lead..... ON
3 lead..... OFF
(I'm guessing your position should be ON)

2nd switch is for generator type:
6 pole = ON
12 pole = OFF
(I'm guessing your position should be OFF)

3rd switch is for engine type:
4 stroke = ON
2 stroke = OFF

Hope this helps!
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Old 04-14-2003, 07:17 PM
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I have the same engine but with the digital gauge. Mine idles right at 600 and is in 100 rpm increments. Ie; it reads 6. Your WOT rpm looks right but if it is 400 rpm off you'd never know. I would suggest that you have it checked by the mechanic where you bought it. Normally there are ways to calibrate most tach's but I'm not positive with your specific model. Not much help I know but obvviously no one else has an answer either. For the piece of mind have it checked. I'm sure you have already paid plenty of good money. I know they weren't giving mine away.
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Old 04-15-2003, 07:51 AM
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Default trying again

your tach is stuck. there may be an adjustment knob...why dont you look back there and check it out?


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