limpin' down the road
 

So my truck sometimes will just stop at like 50mph and wont go over 2200rpms...Any idea why? it only happens sometimes when i've got my foot the the floor. but once i let the rpms go back down it'll be fine.

:humm:

Limp mode.

Welcome to the world of the Duramax Protection Program. :tttt: You either limped the tranny or engine. Odds are, since you don't have a programmer yet, you didn't limp the tranny you limped the engine. This means, your fuel rail pressure was way under it's desired pressure, so the engine protects itself. Now, this can be something simple or something expensive. A lot of the times it's simply a clogged fuel filter and since you just bought it used, I'd start there. Who knows the last time it was replaced. While your at it, check and/or replace the air filter while your there. Cheap insurance. Oh, oil change and tranny service should be on the list too.

i agree with Rttoys, change the fuel and air filter. and at least change the tranny spin on filter. you could also go to an autoparts store and have them check for codes that may also help find the problem. hope this helps

change FF first, when i first got my truck from the dealer it limped on the test drive, then it took them hours to change the FF:madd:

I would have requested a discount for that. :booo: When a vehicle has a malfunction on a test drive, that's not a good sign.

Thanks guys! I think i will go down to the dealership where i bought it. The guy i go to will probably run a full systems check and what not and see what needs to be fixed or replace for free or a very small fee. I'll make sure to tell them what all ya'll have said to look for.

so what happened :pca1:

oh yeah i forgot about this. So i went down to the ole dealership where i bought the truck and they changed out my fuel filter for free. which is pretty sweet cuz it would cost like 143 buck. but yeah it's fixed and is shifting fine and movin right on past 50mph with ease. :U:

holy crap 143, those dealers need a :ph:

https://www.dieselbombers.com/durama...placement.html

lol yeah it's a little too expensive but oh well. like i said. i got it free :D

cant beat free:5:

oh definately not. i like gettin free stuff from the dealership.
k so i heard that the PPE xcelerator standard isn't worth buying...
But i'm really wantin to get something asap.. but i dont wanna spend a ton of money right now cuz i need to buy new tires soon and i'm gonna go ahead and get wheels too...

The PPE Xcelerator will make more power than your truck can handle .. Definately worth every penny.. When you get a built trans, go right to EFI Live..

Most programmers out there on the market right now will limp the trams if your careful on the 4-5 shift

hmmm. you mean if i'm not careful on the 4-5 shift...

try it :pca1:

lol no i dont wanna limp my tranny. and i ain't got money to replace it if it breaks...
(of course i could just take the programmer back out and tell them it broke on it's own and just take advantage of my powertrain warrenty...:w2:)

and they could always hook up a tech 2 and save them 4 grand and not replace ur transmisison:tttt:

lol the guy at the dealership just told me to take the programmer out. so take that:moon:

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and he is their lead service manager.

orly?

yup yup. he said they have guys that work there that do it. i'm pretty sure they wont check on my stuff. just as long as i set everything back to stock.