05 cummins 5.9 throttle sticks high when reved in park or nuetral - Dodge Cummins Diesel Forum
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Old 11-13-2011, 11:52 AM   #1 (permalink)
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05 cummins 5.9 throttle sticks high when reved in park or nuetral

2005 5.9 cummins bought truck with engine in pieces in bed. turbo was blown #4 piston had hole burnt in it. fixed engine new turbo new fuel pressure sensor one new injector all new cross over fuel tubes new FCA. everything torqed properly. Runs great very strong. here's problem im having. rev to 2000-2500 in park or nuetral hangs for 10-15 secs then slowly bounces down. if you rev past 3000 it goes to 4000 or better and sticks wont come down until you shut it off. also after warm up seems to miss but can only hear it through exhaust. motor doesnt shake. that comes and goes then if you run it hard when comes down it lopes like it has cam then runs smooth thn lopes keeps doing that. all stock except kn filter. no codes pedal looks good on scan tool. any suggetions. please and thank you in advance

have found many post with stuck throttl but nothing about throttle not coming down
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Old 11-13-2011, 12:04 PM   #2 (permalink)
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One more thing

Truck has no problem starting
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Old 11-13-2011, 12:12 PM   #3 (permalink)
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Just a little more about it

Also under heavy exceleration seems to ping ( like spark knock)
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Old 11-13-2011, 02:03 PM   #4 (permalink)
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Sure the ECM doesn't have a latent program on it?

I sure would have pulled all the injectors and had them sent off for proper testing while everything was apart. You don't want to take risks with these injectors, they will, as your previous owner found out, destroy an engine in a heartbeat.
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Best Tanks: 16.6 towing / 23.92 unloaded hwy / 23.2 city
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Old 11-13-2011, 02:32 PM   #5 (permalink)
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I made that suggestion truck not mine just working on it. If i cant come up with something that may be what has to happen. Truck has plenty of power it does fel like it may have a program. Im used to powerstrokes and duramax this is first cr ive worked on. I must say i am quite impressed. With it.
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Old 11-13-2011, 02:38 PM   #6 (permalink)
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Depending on the programmer and program and ancillary mods, "Throttle Hang" is not terribly uncommon... But typically not to the degree you're describing. What does the smoke look like?
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AirDog II DF-165 (P551315/BF1275) / GDP Canister Delete / Bosch 505 - Stock Tips (Replaced @ 112,381 mi)
Autometer / JVC / Polk Audio
Best Tanks: 16.6 towing / 23.92 unloaded hwy / 23.2 city
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Old 11-13-2011, 03:05 PM   #7 (permalink)
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When u hammer it a little black other than that nothing
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Old 11-13-2011, 03:10 PM   #8 (permalink)
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If the owner didn't receive a programmer, or there are not tuner boxes connected in the engine bay, you might want to get someone to flash it back to stock to be sure.

Anyone with a smarty (assuming they set their truck back to stock first) can plug their smarty up to your truck and put a tune on it, then put it back to stock, and assuming that there's no latent program inside and they have the latest update to their smarty, your truck gets the latest stock program.

Alternative is to take it to dodge for the same, about $100 and they will flash all the computers back to stock, not just ECM/ABS.

It would at very least tell you if it's ECM related or not... if the problem persists after that, my vote would be to pull the injectors and test them all.

That brings up another point - when y'all were doing the work on the truck, did you take the old injectors out? If so, did you use new crush washer shims when you put them back in? If not... that'd be the next place I'd look. They are a single-use item.
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2007 3500 MC DRW 4x4 5.9L (122k mi)
G56 / SBC SDD3250
aFe Stg 2 / Pusher / GH Delete / FTE 5" TBE
AirDog II DF-165 (P551315/BF1275) / GDP Canister Delete / Bosch 505 - Stock Tips (Replaced @ 112,381 mi)
Autometer / JVC / Polk Audio
Best Tanks: 16.6 towing / 23.92 unloaded hwy / 23.2 city
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Old 11-13-2011, 03:16 PM   #9 (permalink)
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New washers but when got truck injectors where missing bought supposed good used set
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Old 11-13-2011, 03:19 PM   #10 (permalink)
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my truck lopes as well and throttle hangs... it only lopes when I have my diablo at 100hp or more and at that level it will also fuel pings when coming back to idle after hammering on it. I was told by diablo that fuel ping and loping idle is normal with any programmer... hope this helps.
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Old 11-13-2011, 03:28 PM   #11 (permalink)
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My truck doesn't lope and doesn't knock unless I advance timing significantly and then also try to lug the engine. "Any programmer"? No. Without a programmer? Definitely no.
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2007 3500 MC DRW 4x4 5.9L (122k mi)
G56 / SBC SDD3250
aFe Stg 2 / Pusher / GH Delete / FTE 5" TBE
AirDog II DF-165 (P551315/BF1275) / GDP Canister Delete / Bosch 505 - Stock Tips (Replaced @ 112,381 mi)
Autometer / JVC / Polk Audio
Best Tanks: 16.6 towing / 23.92 unloaded hwy / 23.2 city
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Old 11-13-2011, 04:11 PM   #12 (permalink)
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Just put 2 injectors in a cr and its doing the same thing. Cannot figure it out. Mine has a ping. Black smokes frequently and misses. Idk what the hell to do to it.
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