Engine stalls when cruising

[mullenbergm]

Hello all,

Looking for some thoughts/advice on troubleshooting an issue I've been having. Have taken it in with no success in solving the problem. I have a 2000 Maxum 1900SR2 with a 5.0L Mercruiser, which has been intermittently stalling on me while cruising. Can happen at high or low speeds, and just comes out of nowhere. All the gauges read normal, and I'm able to immediately start it back up and take off, until it happens again at some point. Seems to be electrical, which I get can be a bear. Hoping someone may have solved this issue in the past. I've had the main wire harness checked by a local dealer and that looked to be OK. I've heard to also look at the ignition switch and shift interrupter, and would have guessed the dealer checked that out too.

Any help is greatly appreciated...tired of paying for this to not get fixed!

[mmwjr]

Welcome aboard

I had a similar issue that was caused by the choke plate slamming closed due to a disconnected linkage.

So when it restarts there is no lack of power? I would verify the wires on the ignition switch, coil, fuel pump, oil pressure switch are tight.

[mullenbergm]

Hi, thanks for the response. There is not a lack of power when it restarts. Cranked up and takes right off. Thanks for the tips, I’ll check those connections and get back to you!

[jparsons121]

When you say stalls, is it shutting down like the key was turned off or stumbles then dies?

If the former, I'd agree with it being electrical.

Check the emergency interrupt, I had to replace recently as the prongs on the lanyard had bent enough over the years to have just enough slop in them to allow the switch to open and kill the engine.

[mullenbergm]

Hi,

Thanks for the quick response. It acts as though the key was turned off. Then, fires back up immediately.

I’ll check the emergency switch as well.