5.0 gxi- e

[Loggerjlm]

Hi all , I have 2003 Larson with a 5.0 gxi-e, my question is where on the engine is the temperature sensor for the ECM located? I have an idea which one it is, but not positive. My boat seems to be running rich and cuts out at high rpm. Thanks for any help.

 

[muc]

Should be by or on the thermostat housing. Might want to check your fuel pressure, the fuel pressure regulator has a screen that likes to plug up and cause those symptoms. There is a service bulletin on how to remove the screen and replace it with a special C-clip.

 

[Loggerjlm]

Thanks for the info muc , I just put a new fuel pump on because the old one was whining pretty bad, and today I pulled the regulator and cleaned the screen, it had some gunk on it but didn't seem to bad. I'm wondering if the temp sensor for the ECM is faulty , making it think the engine is still cold, which is causing it to over fuel. It runs fine for the first 5 minutes or at low speeds, then begins cutting out after warm. I hate to just keep throwing parts at it but not sure what else to do. Thanks again

 

[89retta]

At what RPM does your motor cut out?

 

[Loggerjlm]

Tachometer is not working but I would say about 2000 or higher.

 

[89retta]

Need to get your tach working. 2000 rpms is not high. How much throttle is it at when it cuts out?

 

[Loggerjlm]

I would say it's a little under half