no power whatsoever!

[bigblue1]

So here's the situation. This all started the other day when i changed my fuel filter. I pulled the old one out, put in a new one, bumped the key to get the l/p to prime the canister, but nothing came up. i ended up replacing the l/p, but now it doesn't come on when it is supposed to. i hard wired it so that i could get home, and i know that it delivers fuel to the injector pump, but i have no power at all, i can barely get to 55 on a flat surface. is there someway reset the ecm to tell the l/p to come on? what is causing the major loss of power? f.y.i. i just started using biodiesel 100, but have not spotted anything too dirty in the fuel system yet.

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1998 24v CTD, Automatic, 4x4, king cab, long bed. fully stock so far...

Prolly just a plugged filter again.when you first switch over to bio it cleanss the fuel system up alot and plugs alot of filters...........whats yer fuel pressure gauge runnin???

[powerstroke_this_ford_boy]

your not running any rubber hoses are you? biodiesel eats rubber. Nice avatar whitmore

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2002 Cummins SLT laramie. ex cab LB 4x4.Cat and muffler delete,Custom crank case vent,D*pricol gauges. 60lb boost,30lb fuel psi, and pyrometer. BD lift pump and BD pusher pump .Diamond plate bed rails, 6" mitre cut grandrocks stacks,MADS smarty, K&n torque tube and heat sheild with BHAF & scilencer ring MIA and some tranny work

[bent valves]

With the lift pump disconnected from the ECM the engine will be in “Limp Mode”. The ECM expects to see an electrical load from the lift pump. If it is wired to the battery the trouble code P0230 is set but the check engine light is not lighted. Limp Mode = reduced power.

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Dave
1998 24Valve, BD dual turbo, Mach 4, Smarty, APB, ARP studs, Rickson 19.5s, DPP 4" SS, CON OFE.

Originally Posted by bent valves

With the lift pump disconnected from the ECM the engine will be in “Limp Mode”. The ECM expects to see an electrical load from the lift pump. If it is wired to the battery the trouble code P0230 is set but the check engine light is not lighted. Limp Mode = reduced power.

cool.........I am listening and learning

[bway1341]

Originally Posted by Whitmore

cool.........I am listening and learning

me to me to keep on teaching hope you get it figered out

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I got a gasser for now.

http://www.farmboysdiesel.com/

Wifes 05 2500 Afe Stage 2 South Bend DD-Clutch Air Dog 150, Smarty, Edge Juice with Att. And some more stuff

[bigblue1]

thanks for the replies, any info opens up options. i got a scanner from autozone on their loan program (nice of them), and pulled a bunch of different codes. here they are:
P0463 - Fuel Level Sensor
P1693 - Manufacturer controlled comp and aux outputs
P0238 - Turbo High
P0237 - Turbo Low
P0236 - Turbo

so far i don't know what to make of these. any help?

also, i have not yet tested the pressure of the fuel pump. but like i said, i don't
think it is even turning on when it is supposed to.

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1998 24v CTD, Automatic, 4x4, king cab, long bed. fully stock so far...

[bent valves]

The 1998 model year codes say that P0237and P0238 will cause an engine power derate but will also illuminate the check engine lamp.

If I were in your shoes the first thing I would do is clear the codes and then start the engine. If the check engine light comes on from the P0237 or P0238 you will be in limp mode. A bad MAP sensor or a bad connection to the sensor can cause these codes. Try cleaning the connector.

If the lift pump will not run when properly connected to the ECM wiring harness this may also cause low power because of the P0230 code which you say did not show up on a scan. Try cleaning the lift pump connectors to get a good connection. Even a small load from a relay to a remote fuel pump will keep this code from showing up and putting you in limp mode.

P0236 is a code you see if the MAP sensor is unplugged or making a poor connection. It looks to me, with 3 codes related to the map sensor; this is the place to start. Also this code will not cause a derate in power.

Good luck.

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Dave
1998 24Valve, BD dual turbo, Mach 4, Smarty, APB, ARP studs, Rickson 19.5s, DPP 4" SS, CON OFE.

[bigblue1]

holy smokes bent valves, are you a cummins technician, or what? thank you very much for making sense out of those codes for me and giving me a path to go down. i'll try what you said right when i get off work tonight.

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1998 24v CTD, Automatic, 4x4, king cab, long bed. fully stock so far...

[bigblue1]

so i did what bent valves said, cleared the codes. well, tried to clear the codes. the scanner wouldn't clear the "P1693 - Manufacturer controlled comp and aux outputs" code or the "P0238 - Turbo High" code. but i tried clearing the ones i could, then test drove it, nothing. took apart the l/p connections, cleaned them, nothing. the only time i could get the l/p to fire up was when i disconnected the batteries, reconnected, then it would turn on during the first time i turned the key to run position. after that, the l/p doesn't turn on any more. i have a sneaking suspicion the ecm might have something to do with whats going on, which might explain the P1693 code. I think figuring out why the l/p isn't turning on properly will likely be the cause of all the codes and power loss. What do y'all think?

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1998 24v CTD, Automatic, 4x4, king cab, long bed. fully stock so far...

[bent valves]

bigblue1, don’t give up yet. With most of the codes gone there are only a couple of possibilities left. Don’t worry about the P1693 code. All this is telling you is there is a trouble code set. Two things can only cause the P0238 code, “Map Sensor Voltage Too High”. Either the MAP sensor is faulty or there is still a poor connection. I am assuming that after clearing the codes the Check Engine Light is on. Is it? When you cleaned the sensor connections (there are 3) could you see any corrosion? It sometimes helps to use a toothpick and dielectric grease to scrape out oxidation.

On my 98, I could only get the lift pump to cycle once with the key on. I believe the early trucks are slightly different from later years. If you can start your engine try loosening one of the two brass plugs on top of the fuel filter with the engine running. Do you see any fuel seeping out? If so your lift pump is running and pumping. Don’t remove the plug or you will be soaked in diesel.

Give me some answers back if you want to follow up. And no I am not a Tech, just too cheap to let others work on my truck.

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Dave
1998 24Valve, BD dual turbo, Mach 4, Smarty, APB, ARP studs, Rickson 19.5s, DPP 4" SS, CON OFE.

[bigblue1]

thanks bentvalves! - it must be fate that i read your message when i did. i am actually on my way to drop my truck off at the cummins service center right now. i am just like you though, i like to be able to fix my own toys, and too cheap also. i pulled the map sensor out today to see if it was dirty inside, but it seemed clean. i ran the truck with the sensor uplugged and nothing changed, wonder if that means anything? i was curious if there is a way to test the sensor. i tried a continuity test between the posts inside the sensor, and got nothing. but i don't know if that is a valid test or not. so, bentvalves, you've saved me from going to the cummins service center for now and restored my faith. seems like all signs are pointing towards the map sensor. also, i just went outside and loosened one of the banjo bolts on the filter and fuel does come shooting out, so my l/p is working

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1998 24v CTD, Automatic, 4x4, king cab, long bed. fully stock so far...