Caterpillar 350 engine question

Faulty thermostat

Paging Shifter.

How does it die? Does it starve for fuel, or does it just shut off entirely? Either way I'd lean towards a fuel related issue initially--which it sounds like you have addressed. Failing that, it sounds like an electronic issue which may be recorded on the onboard computer. Assuming it was built in the past decade or so.

I always preferred the Pete with a four and a quarter Cat. The drivers seem to like them.

quote:

---

Have a 2002 freightliner with the 350 cat engine. The problem I'm having is the truck will idle just fine but when you get on the road it kills after about 5-10 minutes and won't restart until it cools for awhile. I've changed out the fuel pump, fuel lines and filters and it still does it.

Any insight is appreciated.

---

I'll tell you the same thing I tell everyone else on matters like this, get it into your local Cat dealer's shop and have them run diagnostics and troubleshoot the problem.

Having said that, I'm suspicious that your problem may be from your ECM (electric control module) overheating and thus shutting the engine down. Are you in a position where you can get someone to pull the fault codes off the engine? If so post them here and I'll get with our truck engine guys to see what those codes tell us.

ETA: If you can get me the fault codes, I'll also need your engine serial number and engine arrangement number as well. These can be found on the engine ID plate located on either the valve cover or the side of the block. It will look something like this...