Help with non working speedometer

(mrdenial) · (mrdenial) **Join Date: Sep 2006** 06-25-2009, 8:23 PM

This is for my friend.

He has a 2005 Centurion Lightning C4.

Speedometer works 5% of the time. The other 95% it shows zero MPH. Has the triple sensor pickup that does speed, water temp, and depth. Water temp and depth work 100% of the time.

Check where the wires connect under the dash but not behind instrument cluster.

Any pointers?

Thanks in advance.

(krbaugh) · (krbaugh) **Join Date: Mar 2002** 06-25-2009, 8:41 PM

Most likely that paddle wheel sensor has gone bad

www.centurioncrew.com

(mrdenial) · (mrdenial) **Join Date: Sep 2006** 06-25-2009, 8:54 PM

I appreciate the response.

I didn't go to centurioncrew.com as I didn't really see this as a centurion specific issue. Was hoping to get as many responses as possible. =)

So, I'm guessing that if it's the paddle wheel sensor, the entire deal needs to be replaced (speed,water,temp). And possibly the entire run of cabling that goes to the dash?

(mrdenial) · (mrdenial) **Join Date: Sep 2006** 06-25-2009, 9:33 PM

I went and got the part number. It's an Airmar intelligent tri part# 20-435-01. Does anyone know anything about this sensor or where to buy one? Possibly how to test it?

(krbaugh) · (krbaugh) **Join Date: Mar 2002** 06-25-2009, 10:21 PM

The obvious would be your Centurion dealer
Short of that
http://airmartechnology.com/airmar2005/ex20/RMProducts/ElectCat.asp?ProdID=73&Man=All&PageNo=145

(duramat) · (duramat) **Join Date: Feb 2008** 06-26-2009, 8:28 AM

Dan, Ive been through this. replace your paddle wheel. A simple do it yourself project, or pay a fortune at the dealers and walk a little funny after that experience.

(duramat) · (duramat) **Join Date: Feb 2008** 06-26-2009, 8:31 AM

After getting it fixed, I recommend pulling the sensor out so you dont burn it up as your haulin down the road. or chipped from a rock being flipped up by wheels. Just remember to put it back in when your launching next time out.