2003 Johnson 140hp 4stroke rpm restriction

engrick

Recruit
Joined
Apr 23, 2009
Messages
1
2003 johnson 140 hp 4 stroke does not want to accelerate past 2900 rpm. It did go faster than 2900 when throttle was kept beyond that point but surged and hesitated. Engine control (emm)self check was good at startup and no warning lights or alarm went off underway. It is doing this every time.Replaced the fuel/water seperater filter and low pressure filter but problem remians.Is this fuel related or the emm or something else? Had no problem last fall.
 

jonesg

Admiral
Joined
Feb 22, 2008
Messages
7,174
Re: 2003 Johnson 140hp 4stroke rpm restriction

No idea, does it have the SLOW feature like the 2 bangers ?
It could be stuck in SLOW mode. Unplug temp sensor wires to test.
Get a factory manual for sure, not clymer or seloc.
 
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