Am working on a '97 F350 CC DWR. Code MLE0. Installed a Banks Power Pack. Was kind of a pooch before the kit install. Still is but with better throttle response. Problem is really no boost. Banks claims the kit should make 24# of boost but this one only makes 12-14# and 750 deg on a good day. Last time I drove it only got 9# and 700 deg at full throttle @ 2500 rpm. Have cleaned FPR screen, changed filter and cleaned bowl, tried disconnecting the EBV, sent the chip back to Banks to have it checked-it was ok, none of these made a bit of a difference. Ran the scanner (OBD-2) and collected some data. All seemed ok but I'm not an expert on these. But at least it confirmed that the boost gauge was telling the truth. I've driven these when they run well (over 20#) and this one definitly is not making any power. Took it to a local reputable shop (here in the Denver, Co metro area) and did the contribution check and came up with 2 bad injectors and was told that the stock injectors were too small for this system and that we needed to upgrade to stage II's. It idles ok and runs smooth so they might not be completely gone just not contributing fully. Well that's fine and we'll address the 2 bad injectors. But the issue I have with this is that the thing runs hard till 10-12# then abruptly controls the boost. Just flat lines. Could 2 bad injectors cause this abrupt contol and are the stock AA injectors really too small to make 24# boost? I read in these forums that guys are making 28# with stock injectors. Where else do I need to look to get this thing running like I know it can? Why would Banks sell a kit that can't run on the stock injectors? [img]/ubbthreads/images/graemlins/shrug.gif[/img]
yeah the stock injectors should easily make 24-28 lbs.
I would look for a boost leak. what is most likely happening is the system starts to leak above 10-12 lbs. check the turbo up-pipe doughnuts and then check the-after turbo y pipe- the boots may be leaking boost after you hit 12 lbs.
if its the up pipes they are like 10 dollars apiece i think and the boots can just be cleaned up with rag/degreaser and clamped tight.
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New truck 1984 f-250 xlt ext cab. in progress
Newer truck 95 ctd
*SOLD*1997 f-250 auto, 4x4, 132,000,crewcab,remote start,relocated batteries, beans custom stage II's, beans custom 6 pos. chip, beans headstuds, 2002 intake plentums, 2002 HPOP, custom cold air intake, dual 6-in stacks, 4-in lift, 35-in MTR's, auto meter phantom gauges, (3rd) monsterbox tranny, billet input shaft, triple disk TQ, 4:10 Limited slip, snow performance water/meth injection. block painted sonic blue pearl
HP= 388 TQ= 732 w/o water/meth
1/4 mile= 14.4 @ 96mph with dp tuner 6 position chip PICS
Hook a fuel pressure gauge up to your regulator and I'll bet will find that your fuel pump is not keeping up under a load. No fuel/ No boost. You have to check it while your driving at WOT.
If you had 2 bad injectors you would have a pretty good stumbling problem so I doubt its that.
JIM
Without knowing what your truck is for other repairs I agree with both suggestions.
I would not put stage II's in until you know for sure that you have an injector(s) problem. Again, as mentioned, if it runs smooth it should be an injector issue.
It's '97 F350 4x4 CC DWR 5spd. The only mods are the Banks Power Pack-intercooler, exhaust, air cleaner, tubine housing, and Ottomind chip programed for code MLE0. I've checked all the i/c tubes for signs of air blowing out and all the clamps are tight. The exhaust system is tight with no black marks around any of the joints where exhuast gases have leaked out. I have tried it with the EBPV disconnected with no change in performance. I've run it with and without the Ottomind chip with no change in the boost level. Next?
Ok, how about this. Are you getting any/very little black smoke at WOT under a load? If you’re leaking boost and had good fuel press at WOT you'd be getting lots of smoke, it would be like lugging the motor because your fuel/air ratio would be off. If you not getting any/very little smoke you’re not getting the fuel you need to get the boost, then I would check the fuel pressure at WOT to see if your fuel pump is weak.
Good luck
JIM
Good point SD, but when he said this [ QUOTE ]
Last time I drove it only got 9# and 700 deg at full throttle @ 2500 rpm
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I disregarded the chip connection because he should be running better than that even stock. But it is good to check everything [img]/ubbthreads/images/graemlins/wink.gif[/img].
JIM
No change in boost level with or without the chip. It's more responsive with the chip. I get some black smoke but I wouldn't say it's a lot. Gonna do some disassembly today to check the injectors and the orings on them. Will look at all the plumbing and intake plenums while we're there. Maybe we'll find something.
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Hook a fuel pressure gauge up to your regulator and I'll bet will find that your fuel pump is not keeping up under a load. No fuel/ No boost. You have to check it while your driving at WOT.
If you had 2 bad injectors you would have a pretty good stumbling problem so I doubt its that.
JIM
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Uhh... I would really really check your FUEL PRESSURE UNDER LOAD.
several people have mentioned this, and you never said if you had any results. Easiest way is to hard plumb a fuel pressure gauge to the shrader (sp?) valve and run it to a gauge that is sitting on your cowl.
Let us know how this goes before you tear into the injectors..
Last resort, is to check your HPOP pressure.. same deal.. hard plumb a gauge onto the engine and take it for a ride..
Ask if you need help with the parts list for a HPOP gauge..
Good Luck
Chris
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'95 F250 XLT 4X4 Ext Cab long bed, 5 speed, SMFW, custom kevlar LuK clutch by Superior Friction San Jose, 3.55 LSD, '88 kingpin D60, Sky RSK with SD V code springs, 175K miles, ATS 1.15 BB turbo, BDP Stage 2.5 injectors, BDP fuel system, 4 line Stealth, '02 120V IDM, ARP studs, Spearco 7.3 intercooler, 3" intakes, Northern Diesel Performance 6-pos TS chip w/TW tunes, guages, Tymar intake, EBPS bypass mod, IH bellowed uppipes, 4" DP, straight exhaust, 200PSI train horns and 215A alternator..
On the contribution check done on ATS's chassis dyno the fuel pressure was 35psi at idle and 55psi at wot. They didn't tell me what the ICP presure was but my scan software (OBD-2) shows the ICP around 500psi at idle and around 2450psi at wot and 10-12# boost.
Stock injectors? I seem to think that with stock injectors, you will barely be able to put any smoke out.. At least I could not. The EGT sounds low tho..
Not sure how you can be putting out a little smoke, yet EGT at 700*? Geeze my guess would be 1100* and 22 PSI boost with stock injectors.
Not neccesarily Jim. If the boost is low the MAP sensor will see what the boost level in and fuel accordingly. So he might not be getting the fuel because he's not getting the boost.
BEFORE you tear the valve covers off make sure you don't have any boost leaks. If you have someone who can help you have them get in the truck and power brake it to build a few PSI of boost and then spray some soapy water over the IC connection and at the turbo and where the intake manifolds meet the heads. Or better yet if you have some rubber freeze plugs that are large enough stick them in the intake and one in the outlet of the turbo where the down pipe fits to it and pressurize the system. Then you can find the leak if there is any.
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