Loss of Power - Page 2

**ob_1jr** · 09-13-2007, 10:11 AM

That p1345 is for the crankshaft position sensor if I am reading this right.

Code: P1345
Modules:
Description: Crankshaft Position (CKP)-Camshaft Position (CMP) Correlation

P0093 is a large fuel leak detected....could be an injector stuck open.

Code: P0093
Modules:
Description: Fuel System Large Leak Detected

christine2000 · 09-13-2007, 08:13 PM

Benihana53,

I've made it almost 2 months without this reoccuring. But I haven't been on any major inclines either. I can push it as hard as it will go and it runs fine but I know if I head back to the hills it will act up. I carry my scanner at all times now since it seems to clear the codes after 3 restarts for some reason. Good luck with yours and if you find anything out let me know.

Thanks,
Clint

benihana53 · 09-15-2007, 12:17 PM

I have been trying to get in touch with a local Duramax mechanic to see if he can figure it out. He has just recently figured another problem out I had been having for probably 60,000 miles and know one else could figure that out either. It is just weird that it just randomly happens. If I find anything out I will let you know.

HMSW · 10-09-2007, 01:38 PM

Hey

I bought a 01 yesterday.. and it shows the same problems with the Fuel leak error... hmmm... air filter was bad, but changed it.. no better..

Torquerolljoe · 10-09-2007, 03:55 PM

p0093 can be caused by one of 2 reasons: The desired fuel rail pressure can not be achieved or there is excessive fuel return flow. Fuel rail pressure can be monitored while driving while using a scanner. The desired and actual pressure should be fairly close at any give throttle position.
Excessive return flow is a little harder. One, check the oil to see if there is fuel in it. This would indicate that an injector or injector seal is leaking. The other is rather difficult to do as it requires graduated cylinders and several special tools to determine the amount of fuel return. This is best left to a Duramax technician to diagnose.
Since the dealership has replaced the injectors, they are not likely the concern. I have replaced several and have not had repeat problems. I would suspect the injector pump. But then, did the dealership really replace the injectors????

Joseph

**TYREBOYZ_DEMAXIN** · 10-10-2007, 06:25 AM

i've seen where the Fuel Regulator Sensor was cuasing the same symptons and kept throwing the 0093 code on the LLY and a 0087 code on the 06 LLY and LBZ..
quick question for those that are having this problem,does the engine have a 2krpm rev limiter when this code is throwen?

HMSW · 10-10-2007, 02:11 PM

Quote:

Originally Posted by TYREBOYZ_DEMAXIN

i've seen where the Fuel Regulator Sensor was cuasing the same symptons and kept throwing the 0093 code on the LLY and a 0087 code on the 06 LLY and LBZ..
quick question for those that are having this problem,does the engine have a 2krpm rev limiter when this code is throwen?

hey. mine gets the 2k rev limit. Does that indicate something?
I have the p0093, but the truck operates normal when I restart

benihana53 · 10-19-2007, 05:40 AM

I am still having the smae problem, but not as often. This seems crazy, but my truck was doing this more often when we had 100 degree weather. Since it has cooled off it has only happened about twice in the last month or so. Although it is very irritating and I don't feel comfortable driving it long distances. I wish I could figure this problem out. I wonder if it is something specific to 01? This seems crazy, but my uncle just bought an 07 6.4 powerstroke and the same thing happened to him two weeks ago. His truck is still in the shop and they think the problem is a high pressure fuel pump, but it still isn't fixed I don't know if they know what the problem is either. I have also contacted a service manager for a local GM dealership here and he has never heard of this problem. I am stumped.

miko · 10-19-2007, 10:09 PM

I started out with the same problem, but it came and left. now anything over 2000 and nothing not only that but my Idle is shitty, no power, and have changed fuel and air, keep getting 0098 and 99 code.

autochevytech · 10-19-2007, 10:39 PM

when you take your truck in let them know about the code p0093 that could meand fuel filter of pressue in the fuel rail i am a tech for chevy i do all there heavy line stuff i play with diesels all day long to me it sounds like it is low or high pressure inthe rail if the injectors are bad it will dump a lot of fuel but should not give you loss of power that sounds like low fuel to me