I was driving home from going out to supper with my Dad. I was rolling along at about 60 km/h and without warning, engine started to stumble and get loud / lik only two cylinders were firing - generally ran like a 1950 Massey 44 Cockshutt Diesel Special if you know what I mean. I got a look at my fuel pressure as I wheeled into a mall parking lot - 2 psi. Got truck shut down and waited for a minute. Fired back up like nothing ever happened.

I got truck home and parked in the garage without any other hiccups. 7-9 psi all the rest of the way home.

Check engine light is on, but after checking for codes 6 or 7 times, I cannot get a code to come up. All dashes along the bottom in the read out all times checked. So, all of this business didn't even throw a code.

 

Maybe it did but you need a reader to see it.

 

Hard code would show then? Maybe I can get rid of the soft code by unplugging batteries for a half hour.

 

I might go to Advance auto or the like and try their free reader first.

 

I believe you get only one chance to get codes w/ the key.

 

I will have to find someone..........no Advance auto up here.

 

Then it/they should have showed the first time....no?

 

When you did the 3 key clicks did you get a "done" message after the dashed lines? If you didn't see the "done" message then you didn't wait long enough to see the code/s. I bet you are gonna find either a rail pressure related code or a MAP sensor related code. My XZT did this and it was poor connections at the RP and MAP sensors. The fix was a little dielectric grease in those connections. Good luck.

Oh and codes stay in the ecm until you have a number of "driving cycles" without the condition that caused them. I believe it is 5 or 7 driving cycles. A driving cycle is a start and run up to normal coolant temps and vehicle speeds and shut down.

 

Got the "done" message on every try.

 

My 04 did the same exact thing to me last night twice while sitting in traffic, only code was the low fan something 0480. never done it again Fuel ? I have the quadzilla on mine for 50xxx and no troubles... i will check for loose connection......

 

I just went through this too. I did my connections with grease, and it still did it a couple of times. A couple of times when it would idle up it would miss on one cylinder, and it even died on me a few times. Talked to the dealer and they told me unless it did it when they had it in the shop, they couldn't really do anything. I finally got fed up with it, I had to haul my friends 1 ton to the shop so I hooked up to my gooseneck and worked the snot out of it. Has been running good since then (knock on wood)