surge problem...dealer says normal!!!

[Blu-meanie]

Mine did it too. Sometime between 5 miles on the odometer and 2000 miles it quit. It bothered me, but I didn't want to take it to the knuckle draggers until I had to. Maybe if you add the Quadzilla or some other box it will stop. I'm somewhere around 6000 miles now. Life is good.

 

[archer2500]

not this guy...

I have to say I totally disagree with SAG2, I have an 05 Cummins HO 6 spd with less than 800 miles on it and she has NEVER done that to me! And if she did I would be on the horn to the local Cummins distrubitor, not the Dodge dealer. Cummins makes the engine, Dodge sells the truck and works on the engine exactly as Cummins says they should. If in doubt always look in the book, or go to the source.

There is my $. 10 worth.

 

[swaite]

I was in the local mall parking lot. I waited for a woman to back out ( I was being nice to let her out, I was not parking, just passing by). I put it in first gear while waiting. when she pulled away I started to pull forward. I just let the clutch out no throttle (slight down hill). The truck started to move but slowly because of first gear. I lightly accerated, lifted, clutched, put it second, let out the clutch ( no throttle) the truck rev's up and takes off ( my foot is flat on the floor). I am taken by surpise and put in the clutch and slam the brakes. I looked down as it was coming to a stop the tach is swinging down past 1500 rpms!!! The truck had gone at least 1/2 to 3/4 a truck length before I got it stopped. This type of thing has happen twice in 1300 miles. Both in low speed situations. What if someone had backed out or worst someone stepped out in front on me while this is happing. See why I am very upset?



P. S. I drive for a living, so no it's not operater error. I thought maybe on the first time but when it happen again I knew there was a problem. Thanks guys

If I shift from second to third without winding it up high enough in second that I engage third above the govenor low idle limit, mine will do the same thing. Find an empty parking lot and try this again with plenty of room in front. Mine scared me the first few times until once I let it go to see what would happen. Idle overshot to about 1000 rpm and then backed off to ~800 rpm. On the times when I stabbed the clutch the idle would overshoot significantly more, 1300-1500 I believe. I can always prevent this from happening by revving the previous gear such that the next gear engages at or above 1000 rpm.



Steve

 

[rbattelle]

I can always prevent this from happening by revving the previous gear such that the next gear engages at or above 1000 rpm.

Why would anyone intentionally upshift if the next gear will drop engine RPM down below 1000?



-Ryan

 

[DPKetchum]

When it drops below 1000 rpm it lugs I bet and it compansates and kicks the rpm up. Like when I pull 10k in low from a dead stop in mud or wet grass foot off throttle. It will start to lug and then pop up to a higher rpm and pull. I've had mine do what he is describing through a parking lot etc. Nature of the beast and more driver induced then anything.

 

[swaite]

Why would anyone intentionally upshift if the next gear will drop engine RPM down below 1000?



-Ryan

Cold morning, flat ground, lightly (or unloaded truck) and I only need to get it rolling towards the stop sign at the end of the block. It doesn't need to get wound tight for the 150 ft. trip. What I was pointing out was that if one is not careful doing this it can produce the surge Jed Rattle was experiencing. The sudden fueling of the engine by the govenor and resulting surge forward, defeats the purpose of short shifting like this and idling to the stop sign. My point was not to shift this short. I was also trying to pass along my observations that this behavior is self limiting and that by the time JedRattle reacts and stuffs the clutch it is almost over. Finding a flat clear spot and reproducing the behavior along with my observation to rev it a little higher in the lower gear should reassure him this behavior is controllable. My '93 never did this but, this truck has much more power and electronic controls that probably both respond quicker and make it much more noticable. It is disconcerting to have the truck suddenly accelerate under oneself when one had intended it to just idle along.



On the other hand, my truck does not hunt for idle rpm with the clutch in and coasting along the road. I checked it last night on the way home.



Steve

 

[mikepvg]

Mine surged dramatically BEFORE I had the BAD injector replaced. After replacement, don't really notice any surging... . Hmmm

 

[Big_H316]

Most of you guys may only have a slight surge but when I say mine surges..... IT SURGES!!!!! Does it mostly at idle. Engine dies down and then all of a sudden it races up to 1500-1800 on the tach. Does this until I shut the truck down or it dies on it's own. I think it's pure BS that dodge doesn't have a clue. New in-tank LP is here today so going to see if that helps my problem any. The whole thing is crazy to me... . engine dies down... . zero throttle response... . then boom, it races up on it's own. After several consecutive surges the engine stalls at take off... again zero throttle response... . then here we go. TPS tests fine as well as all other sensors. I'm leaning towards bad injectors(even though 75% of the time the truck makes no noise and gets awesome mileage) or a faulty ECM. Both of which can cost me both arms and legs.

 

[Big_H316]

Finally got my surge problem solved!!! After 6 hrs of volume tests and scanner readouts Cummins had me an answer. "No doubt about it, it's the solenoid on the CP3 causing the problem. " How much is the solenoid? HAHAHAAHAA, no can do..... have to replace whole pump. After dumping $930 and a simple removal/install my truck runs good as new. No more surging, fuel pressures are steady and constant and my white-smoke issue has died down a little as well. Cummins said that with extremely high pressures my truck had at idle it more than likely caused premature injector wear which is why it white-smokes, but hey, she finally runs right so the smoke don't bother me at all.



I took extreme caution on the removal process as I did not want to mess up anything. That took me about 4hrs. The install is super easy... . took 1hr from start of process to firing the engine. If anyone needs these instructions I can post them on here... they're are really straight forward.

 

[rbattelle]

Excellent! Don't suppose you took any pics during the replacement...



-Ryan

 

[Big_H316]

I could have taken pics but I literally would have to mail them to you. No way of putting em on the puter. Probably wouldn't know how to do that anyway. I'm just glad the dadgum thing idles and takes off now. It's almost, well, like driving a new one Oo.