Engine dies - but why?

[iamdub]

Interesting. I was curious enough about this to go look at mine, and it's not there on my L59. And the oil dipstick on mine is closer to the firewall.

View attachment 407506

You got me!

I forgot I was in the GMT800 forum. Again.

 

[PG01]

You got me!

I forgot I was in the GMT800 forum. Again.

Not gonna lie, I had to check where I was when u posted that pic….lol

 

[Just Fishing]

So was just out messing with it. I pounded, pulled and twisted on pretty much anything under the hood I could get at. It never missed a beat. I pulled one of the PCM connectors off and noticed something I've never seen before. There's some kind of oil in here. To me that's not normal.

oh, you need to smell that stuff to see what it is.
If you don't know, then it's time to start sniffing fluids and compare!

 

[Just Fishing]

It also makes me wonder if you got some oil in that PCM somehow...

 

[Fless]

As noted before, oil can migrate through an electrical harness from a failed sensor seal.

 

[Jobi-Wan Kenobi]

So ended up having trouble with it again today after work this morning and was supposed to be going somewhere with it but ended up leaving it sit for the afternoon (this after making a trip into town from work). Started fine when I returned a few hours later. On my drive home the engine very briefly cut out for the first time. But there is a registered code P0335 for the crankshaft position sensor now. Now we might be getting somewhere.

 

[Jobi-Wan Kenobi]

Apparently though a new sensor requires a relearn process with a scan tool and I don't have one. So don't feel very good right about changing the sensor.

 

[wjburken]

So ended up having trouble with it again today after work this morning and was supposed to be going somewhere with it but ended up leaving it sit for the afternoon (this after making a trip into town from work). Started fine when I returned a few hours later. On my drive home the engine very briefly cut out for the first time. But there is a registered code P0335 for the crankshaft position sensor now. Now we might be getting somewhere.

Crank Shaft Position Sensor you say? Hmmm……

Now you have something to work with.

 

[Fless]

A CASE relearn isn't necessarily "required" after changing the sensor, but it's recommended. Not doing it might show random misfires, or not.

 

[Jobi-Wan Kenobi]

I had seen a couple things where the relearn wasn't required for AC Delco sensors. Is this actually true? I would think not.