Engine/Transmission (1998.5 - 2002) ok ?

[JeffWhite]

My mind is by far not made up, but if I do keep this truck, a question.

I've spoken of it falling on its face with a load / hill at 70 -

Empty, from a 2500 rpm punch in fifth, it will scream till I get chicken

and let out of it - I honestly don't know when it would quit pulling, it gets

to the red, or close to it so quick its scary. And it will set you back in

the seat like my old big-block musclecars, never believe it weighs 7000+

if I hadn't weighed it myself. But with my signature load, it is a dog over 2000 rpm. I am beginning to wonder if with just a little load like I have, it is de-fueling because of the increased boost it builds. Has anybody experimented with just a boost fooler, and nothing else on a truck like mine?

 

[darkhorse]

What are you seeing for boost pressure? Without a boost elbow your wastegate should limit you to about 20 psi. That won't throw a code or cause defueling.

 

[AKAMAC]

If you don't want to fool around with electronics, put a mild set of injectors in.

For about 200 you can get a set of Boisio tips that will give you some extra HP; or you can get a set of Dom M's 1. 5/1. 6 that will work with the HO and not be to bad on EGT.

Do you have a fuel pressure gauge? Loaded, you might be running out fuel.

Mike

 

[JeffWhite]

normally, it doesn't boost over about 20, but when you hit a big hill with

load, and starts falling back in 6th, which I don't protest, after all it has

3. 54 gears- you shove it down in fifth, and the boost will pass 20, believe

I have seen 24 at times. I don't believe I'm running out of fuel, always

showed at least 8-10 psi at the lowest. I just can't square the way it

runs empty, or at slower speeds with up to 16,000 lbs in tow, with the

way it turns gutless at 65 with a small load. I know I have as much or

maybe even more air drag with that big slide in as any trailer, but surely

not that much? Drove a Ryder box truck with a 6. 9 non-turbo ford one time,

that is exactly how it acted, ok power (empty) up to about 60, then it hit

a WALL. Maybe air drag is my whole problem - just need to get a different

camper?

 

[Steve St.Laurent]

Possibly a dumb question but you do have the stock boost elbow on the truck right? With the stock elbow it should be wasted around 20 psi. If your boost goes above a certain point (not sure what that is on the ho - it's 20 on the non ho) the ecm will defuel to maintain below that.

 

[nps]

I have pretty much the same setup as you with 4x4 and 315's holding me back. Pulling a 10k+ 32' TT uphill is no problem - only the steeper grades need a downshift to 5th, and never below.



I've also got an EZ. Never did much towing before the EZ other than pulling my wife's ML320 on a trailer went on I-70 through the Rockies. The back was loaded with about 2k of cargo also. I think the EZ does make a big difference. Without the EZ power doesn't come on until you hit about 1900 RPM. With the EZ you get power thru the whole range.



You are getting a new VP right? Suggest you try it, and then pick up a used EZ or borrow one for the weekend and see what it does for your useable power.

 

[HeavyHauler]

It looks like the wastegate for an '01 HO is 26psi but with a max boost range of 20. 5psi. I assume it's probably the same for an '02. This is coming from Dave Fritz's site - Dodgeram.org



So, if you're under an extreme load, I could see how the boost gauge might hit 24psi. And this would explain why it doesn't throw a code.



http://www.dodgeram.org/tech/dsl/FAQ/turbo_faq.htm

 

[JeffWhite]

Possibly a dumb question but you do have the stock boost elbow on the truck right? With the stock elbow it should be wasted around 20 psi. If your boost goes above a certain point (not sure what that is on the ho - it's 20 on the non ho) the ecm will defuel to maintain below that.

If it's on wrong, its 'cause somebody in

Mexico City put it on wrong, nobodys been messing with anthing over in

that area. I bought new, did muff elim. and BHAF myself. A thought, are

those two mods causing more boost = defuel? Seems like it was even a

worse pig though over 2K before I did the mods. Is there any down and dirty

thing I could try to see if this is my problem? Like bypassing something?

Two questions: could it defuel, overboost related, without setting a code?

It only has 0216, but that is recent, this dog thing has been all 54K.

#2, Is there any way, shape, form, fashion, that this latest problem could

be the MAP? even though it is setting 0216? It is under warranty, I don't

care what it cost, hell, the more the better, way I feel right now!

I have seen some odd stuff on gassers, set code may only be indirectly

related to the actual problem - another reason why AutoZone should not

be allowed to have scanners, or even a battery tester, for that matter!

and Hi to H. H. , I'll try to get back in touch soon. Thanks all, Jeff

 

[nps]

It'll only defuel on an overboost if the wastegate doesn't open. Since your boost gauge isn't showing high boost, I suspect that is not a problem.



Change the VP then retest - maybe the VP has always been weak.

 

[smithy]

hello, you got a code po216,thats timing failure, in the pump, your map sensor would give you the same but never a code 216, time to change the pump,sorry

 

[Jetpilot]

Jeff,



I would be suspect of your VP..... A 0216 is know as the "death code" for the VP. Also our trucks defuel the motor when boost exceeds slightly over 20 psi, this will cause a decrease in performance. The overboost code and the defuel are independant of each other although normally you will get a code when the engine defuels do to high boost.



Doug

 

[JeffWhite]

Thanks guys, I'm gonna try again, first time I get to camp after the

sort of new VP next week, it may be the end of September, but will be

a good test - going towards Sardis Lake on 76 there is one of the meanest

hills in this part of the country. It goes up and up, drags you down, then

it levels off and fools you, then up again! So far, about 55-60 is the most

I've been able to hold over it, not so bad in itself, but I am having to FLOG

it just to keep that! I really do think the computer is pulling fuel out for

whatever reason, my EGT's pre-turbo only hit about 1000-1050 when all

this is going on. I am used to getting some relief when I downshift a truck,

but when I hit fifth, and the r's come up to 2500 or so, I swear it feels

like you threw an anchor out. The truck feels strongest about 1900, not

what I expected from a 24V. I am slowly getting over my mad spell with

the VP, but would love to trade for a 3rd gen if I could. Got a jones for

a 4wd, regular cab DRW - not many of those around, probably. I did see

a 2wd regular cab 3500, back early this year, but its the only one I ever saw.