No Power ---- Help

MattC · November 22, 2009, 07:32:25 PM

I"m stuck in Kettlemen city, CA. Was zipping up I 5 and pulled in to eat. Started bus she sounded ok, but like she was loading up for a second then the RPM would go back up. Went to pull out and have no throttle when not in Neutral. Changed Filters 2 wks ago (remember oil leak saga)... Any suggestions??? Can make 2 mph if not on hill.

K234039 · November 22, 2009, 07:37:35 PM

Do you have an air throttle? If a fitting comes off thats what happens.

MattC · November 22, 2009, 07:39:36 PM

Quote from: K234039 on November 22, 2009, 07:37:35 PM
Do you have an air throttle? If a fitting comes off thats what happens.

wish it were so, have elecrtic throttle. Can redline her when she's in Neutral. But she builds R's a bit slower than usual.

Busted Knuckle · November 22, 2009, 07:54:33 PM

Matt sounds like you have lost one of the 2 - 12 volt feeds for the ECM for the DDEC.

The best of my memories it is one for each side of the injection or something like that!

Call Don Fairchild @ six six one-391- 4520 he knows the area and your system better than I can remember!

BK

John316 · November 22, 2009, 07:57:53 PM

Sorry, Matt. I don't have any good ideas. I would assume that your throttle is electronically controlled. If so, I might guess a throttle sensor, but you have great throttle in neutral...so that don't figure.

Just for grins and giggles, do you have a spare set of filters you could spin on?

When you are in drive, does it just not throttle up? What happens? Do you go to step on the throttle, in Drive, and then it just RPM's high, but you don't move? Or do you not get any RPM's when you are in drive? I am just trying to figure out if it is a lack of RPM's, or if it could possibly be a brake issue.

God bless,

John

MattC · November 22, 2009, 08:06:17 PM

Quote from: Busted Knuckle on November 22, 2009, 07:54:33 PM
Matt sounds like you have lost one of the 2 - 12 volt feeds for the ECM for the DDEC.

The best of my memories it is one for each side of the injection or something like that!

Call Don Fairchild @ six six one-391- 4520 he knows the area and your system better than I can remember!
BK

No answer, I guess I'll give him a call in the AM ... I checked the fuses, they are happy and not corroded but I re-seated them just in case.

Thanks BK!

MattC · November 22, 2009, 08:07:43 PM

Quote from: John316 on November 22, 2009, 07:57:53 PM
Sorry, Matt. I don't have any good ideas. I would assume that your throttle is electronically controlled. If so, I might guess a throttle sensor, but you have great throttle in neutral...so that don't figure.

Just for grins and giggles, do you have a spare set of filters you could spin on?

When you are in drive, does it just not throttle up? What happens? Do you go to step on the throttle, in Drive, and then it just RPM's high, but you don't move? Or do you not get any RPM's when you are in drive? I am just trying to figure out if it is a lack of RPM's, or if it could possibly be a brake issue.

God bless,

John

John,

I get RPM in Neut, but it's slow gaining R's. When I put it in D, or any gear it just idles with my foot on the floor. Gotta love computers, eh?

Dreamscape · November 23, 2009, 03:28:58 AM

Matt, Here is another number for Don, not sure if it's good though.

661......301......4648

Good Luck!

ArtGill · November 23, 2009, 03:50:40 AM

Check the plugs on your DDEC. There are several smaller plus of which one goes to the injectors on one side of the engine and another that ges to the injectors on the other side of the engine. I had one come loose and gave the loss of power that you have described. Just like bad fuel filters. We fixed it with tyewraps after the shop replaced two injectors. I hope your problem is that easy.

Art

robertglines1 · November 23, 2009, 04:15:47 AM

I assume you are still asleep. Hope you have solved already but if you haven't gotten help yet;sures sounds electrical..check your batt voltage engine controls are very sensitive..what ever happened apparently happened over a short time span;loose connection,bad connection,bad batt(one bad batt can screw up every thing)good luck....your best bet is Don.

JackConrad · November 23, 2009, 04:51:23 AM

With cold engine, start engine and feel both exhaust manifolds. If one remains colder than the other, the injectors on that side are not injecting. Possible wiring issue on that side? Jack

robertglines1 · November 23, 2009, 05:03:19 AM

Matt ck out thread hockey teams bus I pulled it to top for you...good luck

rv_safetyman · November 23, 2009, 05:21:18 AM

Matt, did the check engine light come on? If so, you can check the code via the ignition switch. I don't know the exact process, but it it something like turning on the switch a couple of times and then the check engine light will blink out the code. There are three numbers and you have to count the blinks for each digit. If you can do that, we can be of more help. Might also want to post your phone number.

TO ALL: you should all think about converting your fuel filter system to a Fuel Pro 382 (http://www.davcotec.com/products.html). Best investment a person can make. It is available at DDC dealers and most truck dealers. You replace both of your filters with this unit and you can SEE if you have a fuel filter problem. You can also see when you need to change filters rather than blindly replacing filters. It is also self priming (you need to pour fuel back in, but then it primes the engine if you need it). A bit pricey, but worth every penny when you have these sorts of problems. A very large number of commercial trucks use the system.

Jim

luvrbus · November 23, 2009, 05:33:56 AM

What codes are flashing sounds to me like a fuel problem.
DDEC 2 strokes the fuel pump gets weak and will cause a similar problem they have a different pump than the mechanical engines.
Go for new filters first and check for leaks

good luck

Len Silva · November 23, 2009, 05:46:32 AM

Far from expert here, but I would say that if you get absolutely no throttle response in gear, then it's probably computer/electrical. If you get even just a little reponse, then maybe a fuel problem.