Question?

Printable View

03-04-2009, 06:37 PM
beckleybassfanatic

Question?

I noticed a Topic in the Stratos/Javelin Board that a guy replaced his TPS (throttle posistion sensor) and gained 1.5 mph, and his old RPMs was 5500, but now there 5600..His motor was a 1999 Evinrude Ficht...He also stated that his TPS was set at 96% ?...what does that mean?..Im not trying to be stupid, but this gets me to wondering what mine is set on?...I have a 2004 Johnson Bombardier 175HP, sorry for no model or serial #'s, but I can get them if needed for any replies you all might have....Is there a way I can check my TPS?...My motor runs good and sounds strong, but I wonder sometimes if its really putting out all that it has...I've never had it on a dino...Thanks guys for any replies.
03-04-2009, 07:39 PM
SEAHORSE

Re: Question? (beckleybassfanatic)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by beckleybassfanatic »</TD></TR><TR><TD CLASS="quote">

...I have a 2004 Johnson Bombardier 175HP, sorry for no model or serial #'s, but I can get them if needed for any replies you all might have....Is there a way I can check my TPS?...
</TD></TR></TABLE>

Your motor does not have a TPS, it is a traditional carbureted 2-stroke
03-05-2009, 06:51 AM
beckleybassfanatic

Re: Question? (SEAHORSE)

Thanks for the reply.
03-05-2009, 07:49 AM
JR19

Re: Question? (beckleybassfanatic)

It was me that replaced my TPS. As seahorse said your motor does dot have a TPS. Motors that have a TPS are the ones with a computer Ficht and E-tech. TPS is a sensor that tells the computer what position the throttle is in.

I was getting a check engine light because my sensor was faulty. The sensor is spring loaded and my old one had a bad spot. At one particular spot when you moved the spring it would get tight then make a clicking/popping noise. The new TPS is smooth all the way from closed to open position.

When you install a TPS you hook the motor up to a portable diagnostic computer and set the travel in the spring to match the travel in your hot foot/throttle. When my hot foot is pushed all the way to the floor the spring in the TPS is 96% open. I could adjust the travel in my hot foot so the sensor could open up to 100% but at 96% I am turning 5650 rpm and that is enough for me.

The reason I gained 1.5 mph is because my old TPS was set so my motor turned 5550 rpm. The extra 100 rpm equals 1.5 mph. I did not want my motor to turn any more rpm but the extra 100 is still in the safe range.