Lope at idle

[Tomeygun]

Mine really gets ignorant when it kicks into high-idle...



not just a little lope, I mean a lope that make people ask if it needs to be tied down as not to run away!



Also, I feel a surge at very light throttle, and the boost goes up and down with the surge, makes me think injector or CP3...



Hmmmm... I am at 28k miles, At 34k or so, I will yank at chips,etc -- and take it in for a full test (cylinder shut down and all)



My guess it still an out of whack injector

 

[realsquash]

It was 6F outside today and my truck still does it. Just like when I first brought it home after it was born.



I don't think it's an injector, I bet it's something in the CP3 or the rail pressure sensor. Isn't someone supposed to be selling a rail pressure gauge now? Hmmm... .



Andy

 

[Dieselpowerman]

My 03 has done this for 38,000 miles. It started when I had 2K on the clock. My truck lopes very bad at idle even in warm temperatures. 4 trips to the dealer and the last one resulted in a $90 "diagnostics" charge. The way I see it, from now on it is my problem. Its a shame that it has come to this on such an expensive truck...



I have an EZ and a homemade in-cab switch to change from levels 1-3-5. The truck lopes regardless of what level I am on. Does anyone with a TST box still have a truck that lopes? Maybe the timing changes that the TST has modifies the injector timing in such a way that the idle lope is dimimished or eliminated.

 

[Tomeygun]

My 03 has done this for 38,000 miles. It started when I had 2K on the clock. My truck lopes very bad at idle even in warm temperatures. 4 trips to the dealer and the last one resulted in a $90 "diagnostics" charge. The way I see it, from now on it is my problem. Its a shame that it has come to this on such an expensive truck...



I have an EZ and a homemade in-cab switch to change from levels 1-3-5. The truck lopes regardless of what level I am on. Does anyone with a TST box still have a truck that lopes? Maybe the timing changes that the TST has modifies the injector timing in such a way that the idle lope is dimimished or eliminated.

Well, with the TST on, the lope was very minimal, and non-existant off idle...

So, NO, adding the TST will not help, but didn't hurt for me



NOW with the ez stacked, this thing lopes bad enough at idle, that I think it is dropping a cylinder... I mean this thing shakes!!!! and bad!



SOOO, I am going to hook up a DRBIII, and see if I can use cylinder shut down to isolate it, OR see if the TPS is goofy...



Without the EZ, I could tolerate, but with it - man its hard



BUT ---- the power is SOOOOO much smoother and the low end is just stupid!

 

[Jeff_K]

Mine has a noticeable lope at idle that is directly related to the Edge EZ. I removed the EZ and the lope was gone. I notice it most when it is cold, but lately it has been getting bad all the time. It got so bad that I just pulled the EZ off altogether and everything was fine. A few days later, I hooked up the EZ again and the lope was back, but it wasn't nearly as bad. Does Edge know why this is a problem?

 

[Tomeygun]

Mine has a noticeable lope at idle that is directly related to the Edge EZ. I removed the EZ and the lope was gone. I notice it most when it is cold, but lately it has been getting bad all the time. It got so bad that I just pulled the EZ off altogether and everything was fine. A few days later, I hooked up the EZ again and the lope was back, but it wasn't nearly as bad. Does Edge know why this is a problem?

some very insteresting info here:

https://www.turbodieselregister.com/forums/showthread.php?p=1099161#post1099161

 

[DocDetonancour]

I guess I wasn't paying close attention to the previous threads on the EZ? After reading all the complaints, why would anyone run the EZ? Doc

 

[Tomeygun]

I guess I wasn't paying close attention to the previous threads on the EZ? After reading all the complaints, why would anyone run the EZ? Doc

Keep in mind it is not the EZ's fault... the EZ just amplifies the problem, My guess is it delays the signal for a moment, then the rail psi drops even further and the CP3 ups the pressure to compensate, etc



So the worse it is stock, even MORE worse with EZ on

 

[USMCBay]

My '03 starting loping at idle just in the last few days, after the weather got cool. 40's or so. Coincidentley, the dealer just changed the fuel filter at 10k miles.



So... yesterday while the truck was sitting and idling (with a lope)to warm up, the idle suddenly jumped up a couple of hundred RPMs. I ran over and tapped the throttle pedal, and it went back to normal.



Only mods so far are 4" exhaust and AFE air filter. No electronics, yet.



Not a big problem, just a bit aggravating on a new rig.

BINGO... That is also happening to my '03 with Edge EZ. I think some people are confusing electrical draw down (ie, Heater Elements, etc. ) and this Lope. I noticed the electrical draw the other day @ 18° F and it is COMPLETELY different than the Lope.



Elecrical Draw symptoms:



Clicking noise in engine compartment

Subsequent draw on motor

Lights dim (interior & exterior)

Another click with RPM regain - lights brighten



Lope Symptoms:



Cold weather starts

Radical Cam like Lope

at 15 - 20mph very noticable diesel clatter lope - no RPM change noticed

Some of us in freezing temps have had a steady RPM rise - I let mine go and it eventually drops to normal (did it twice during warm-up).





So if you have it you know it... if it is electrical draw you may THINK you have it.



Guess we need some type of Anti-Lope... :-laf:-laf

 

[BILLVO]

I do believe Edge is looking into the cause, but because it's not a performance related issue, it's probably behind the timing/pulse box and a few other things. QUOTE]





Edge can't even figure out why their 2nd gen Hot comps will not power up when cold.

 

[DerekW]

its either injector, lift/fuel pump/, twisted fuel line, air in fuel,mis management of fuel delivery by computer. ez has nothing to do with this problem that is now starting to rear its ugly head. i thought for a while that i was the only one but i see at least 5-8 people on this board having the same problems.



my trucks starts and runs fine just idles funny. and when in cruise ctrl i can almost tell the surging is their. i think i can feel it now b/c of increase hp by ez.

Just bought a 2nd 04. 5. she had a very slight lope to it that wasnt hardly noticeable before I signed the title. I added a quadzilla boost fooler to the ts-mp-8 (big mistake 2 tuners on the the map sensor especially with the TS being so aggressive on the rail pressure) and added a smarty on top. drove it 2,000 miles and now I am looking for new injectors. my problem started as slight loop then got worse and worse now its getting to the point where the truck really rattles and I am remembering seeing a misfiring ford diesel. if your problem is the same as mine injectors is probably your problem. some of you are using the edge ez and complaining of the exact same problems as I evolved from. oh and yes in high idle at 1thou mine is down right annoying cuz it sounds so bad. real trucks DO rattle but they dont sound like crap like this one is.



ANYONE GOT ANY INDUSTRIAL INJECTION STAGE 1 INJECTORS OR SOME BRAND NEW STOCK INJECTORS IN THEIR INVENTORY??? (not shouting just wanting to stand out)

 

[USMCBay]

Okay - I have read up to the point in 2004 they were saying it was solved with an EFC Actuator replacement. Now it seems as though it is a bad injector problem.



At 161k i probably need to replace injectors anyway.



Any suggestions on injectors with an '03 - only mods are K&N w/ Edge EZ. I have NO dusty conditions - and I have heard ALL of the K&N chatter:-{} - so please keep this an injector question.



Thanks

 

[DPKetchum]

Whats a EFC actuator?

 

[ssanders60]

rruumm rruummm rrruummm

My '03 sounds just like CATCRACKER's, it has always done this

in cool or cold weather. The RPM remains steady on 750.



It has a bump-bump-bump from time to time. All of this goes

away after a road trip, the engine oil always remains clear, no smoke,

no need to be alarmed, also occasionally has a tick-tick-tick, also

goes away after a road trip. These engines cannot run smooth

under mty and city driving conditions, however the fuel mileage

remains superb in city 18. 2/19 and 19. 5/ 21. 5 on the highway,

depending on whether you 65 MPH or 75 mph. Empty, of course.



'03 H/O 4x4 48re, stock 78,500 miles.

 

[USMCBay]

Whats a EFC actuator?

Electronic Fuel Control Actuator



This was a "solution" in the last thread back in 2004 - so I emailed the guy and he said "No... it wound up being a bad injector" - so now I need to find a good injector for my '03 with K&N / Edge EZ for towing.



... or - is there an injector that I would want to steer clear of?



I have another CTD that I can drive if pulling my injectors to have them reworked is a good option.

 

[hearingyourlies]

I've got this same thing on my truck. Never had a fuel or pressure box. Only seems to happen at high idle between 1000 and 1200 and then goes away. Guess it's an injector. Better have it done before 100k.

 

[steved]

Lopey idle? Surging?



Get ready for injectors... mine loped for a little over a year before it needed injectors. If it kicks into fast idle, it will sound like a big cam gasser... vrump-vrump-vrump. At normal idle I had a bump-bump-bump tone in the exhaust.



The surge can be from a FCA, but mine was caused by bad injectors. I noticed it the worst with the cruise engaged... it would surge/buck when coasting.



The final problem I had before the final death was a bucking start... if you have this, you'll know exactly what I mean by bucking start.



I had the injectors redone, it took care of a lot of "issues".



steved

 

[DPKetchum]

I still don't buy the 3 cylinder warm up deal. I still think its just plain a poor running issue. If I'm wrong I'd like to read about it?