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i have a 2001 2500 --has no pwer,misses,surges under accelration and blows lots of white smoke . checked codes has po230 and po234- . also when looking at data screen on scan tool has no cmp rpm but tach works fine. can you help me thanksED

Hi guys. I have a couple questions on what is going on with my truck. I noticed I am shifting too early where the RPM's are low and it surges or jerks until the RPM's get higher. It is shifting into 4th gear with OD off at 25mph and it happens also about 45mph where its shifting into high gear and doing the same thing with OD on. Tonight I was doing a couple road tests and I got on it alittle more than usual and when I got home because of how it was acting, I used my scangauge and I had a p0234 code. So I have been doing alittle reading about the wastegate etc which I do not understand and wonder how the code is related to what is going on with my truck. Is it something else with these symptoms??? The only thing I have done different recently is have an Airdog 100 installed and hooked my Quadzilla XZT up a month ago. Any suggestions or answers are appreciated!!

There must be some old threads that describe in detail the workings of a wastegate for a '95 12v; if so could someone possibly direct me? I seem to be inept at searching this site. If not, I have some questions about how it works. Thank you

Hey Guys, First post! I recently picked up an 02' Ram (in my signature) with the HO 245HP cummins and 6spd, it's got 100hp injectors and a 4" exhaust and no chip/tuner This last weekend, I went for a 250mile drive, and all seemed to be well and got back home sunday morning.Sunday afternoon, I was heading out for a drive and noticed some white smoke at idle, when warming up AND while warm while at idle. While under ACCELERATION/LOAD the truck will now put out more black smoke than usual. The truck was idling fine and nothing seemed out of sorts. Figured I'd pull a code so I quickly pulled over and checked and got P0234. I contacted the folks at BD diesel (they are local-ish and familiar with the truck) and they reccomended I clean the map sensor, but Ive been reading that it may be wastegate related? Anyway, All input is appreciated, i'm just hoping that it's not the VP44. :\ Thanks and take care! -Jeff

Before I mucked around under the hood, I used to get 33psi with my 12v reliably and repeatably. Never spiked, never buried the gauge as long as the boost line was hooked up to the wastegate control. I've now swapped in a P-pumped 24v and I'm overboosting at and near WOT when under load. I only have a 35psi gauge and it'll pin it - probably getting to 45+psi. Stock gasket and retorqued stock bolts to 130# with roughly 17˚ effective timing; I can't boost that far safely. I'd like to be back to 30ish psi peak boost. I'm still giving manifold pressure to the wastegate, and I actually just stepped up line size from 1/4" to 5/16" but it didn't make a difference. What I changed: - nothing at all on the turbo side. same turbo, same wastegate actuator, nothing dropped nothing adjusted nothing intentionally tweaked... - the boost line is now about 2' longer since it needs to run around the one piece valve cover instead of between #3 and #4. - manifold pressure source and routing changed. before: 1/8" NPT port in head to boost gauge 1/8" NPT port in head to tee, unrestricted to 1/4" line to wastegate; restricted port to AFC now: 1/4" NPT port in intake horn to 5/16" line to wastegate 1/8" NPT port in intake horn to tee, unrestricted to boost gauge and to AFC One other difference is I have lost smoke - it used to smoke badly off the line until 1300-1400, and now it does not at all, but timing is at least a little different now.... I didn't open the AFC during the swap so star wheel, idle screw and fuel plate (#100 home ground) settings should all match. Only difference should be 1-2˚_timing. It now acts exactly as it should with a well tuned AFC: no smoke off the line, and it doesn't start to overfuel until about 2500rpm and WOT. I think I actually need to move my fuel plate back a little as it'll get hot up there, but I need to get the overboost taken care of before I can tune the top end. How can I restrict my boost?