Random cutting out 4.3 mercruiser

[dalkaveli]

You have a short, so is it the module or pump, guessing module

You thinking the tks module itself eh?

 

[alldodge]

Yes most likely, here is a block diagram

 

[dalkaveli]

Yes most likely, here is a block diagram
View attachment 371215

This makes sense. I noticed the module didn't stop hissing like it should and was not warm shortly before the diode went up. I will try and confirm then order. Your help is immensely helpful dodge.

 

[dalkaveli]

Yes most likely, here is a block diagram
View attachment 371215

I've tried a new tks enrichment module and even tried a new 50 amp. Still acting up. I've ran all the diagnostics in manual 41 for tks. The only thing I'm not seeing is continuity at temp switch when running and disconnected at 130 degrees or so. Maybe it is the switch after all?

The only other thing of note is this new tks module isn't warming though the old one was.