I have been having some throttle problems with my 5.7 multipoint injection engine. The engine runs fine up to about 3300 and when throttle is increased beyond that range I get no immediate response from engine then suddenly the engine will race up to about 4000rpm. I can not stop the rapid increase even by reducing the throttle control. My boat wont plain at that rpm or get to cruising speed. The engine is only a year old and has run fine up to this point. I have hooked up a computer to engine to check all the trouble codes and found 2. The 2 codes were for the same malfunction, Electronic Throttle control pedal malfunction.
My engine has the conversion from mechanical throttle control to electronic. My throttle cable connects to a electronic throttle control sensor which sends information to the throttle body to increase or decrease fuel. The manufacturer sent me a new potentiometer to correct codes but it did not correct problem.
Manufacturer now believes it is a fuel issue and not a malfunction with engine. My mechanic doesnt think it is a fuel issue and thinks throttle body is malfunctioning.
Help!
My engine has the conversion from mechanical throttle control to electronic. My throttle cable connects to a electronic throttle control sensor which sends information to the throttle body to increase or decrease fuel. The manufacturer sent me a new potentiometer to correct codes but it did not correct problem.
Manufacturer now believes it is a fuel issue and not a malfunction with engine. My mechanic doesnt think it is a fuel issue and thinks throttle body is malfunctioning.
Help!