Offshoreonly.com - Throttle position

Offshoreonly.com (https://www.offshoreonly.com/forums/)

- General Q & A (https://www.offshoreonly.com/forums/general-q-20/)

- - Throttle position (https://www.offshoreonly.com/forums/general-q/61244-throttle-position.html)

jimjomack

10-12-2003 05:21 AM

Throttle position

When I hook up the mercruiser scan tool to my 502 MPI the scan only shows 75% throttle opening when I have the throttles wide open. The buttleflys are open all the way when you look at them at wide open thru the throttle body. Will this affect top end or is this just the way the computer is programmed ?

GO4BROKE

10-12-2003 07:55 AM

Yes, that will affect the fuel curve. The injection timing will probably never go asynchronous @ WOT. Probably just need a new TPS.

Cord	10-12-2003 08:20 AM

I'm thinking TPS. Try adjusting it first. You might just get lucky.

mcollinstn

10-12-2003 10:34 PM

TPS.

Disconnect the throttle cable and check TPS output voltage at idle and WOT, and also slowly move from one extreme to the other and the voltmeter needle should swing smoothly with it with no jumping around or dead spots..

All times are GMT -5. The time now is 09:50 AM.