I have a 99 5.4 which is throwing codes P1131 and P1151. I cleaned the MAF sensor and am now wondering what else. I have read it could be anything. The truck runs great cold....but when it get's warm it gets less and less power the more you push on the throttle. Basically less rpms with more gas (only when it's warm). Runs smooth also. Please help!!
__________________
Ty (Dukey)
I may be the average teenage Farmer/Rancher, but everything done to my trucks I did myself!
2006 F-250 6.0 POWERSTROKE!!!~~6.GO!!!!!~~4 inch Diamond Eye Turbo Back Exhaust, IPR Research Coolant Filter, XDP EGR Delete, ARP Head Studs & Black Diamond HGs, SCT SF3 3015 tuner, Air Lift Load Lifter 5,000s w/ On Board Compressor System~~
Early 2004 F-250 6.0 POWERSTROKE!!!~~6.GO!!!!!~~ 03 motor, Straight pipe with stock pipe, DFUSER Coolant Filter, River City Diesel EGR Delete, Ranch Hand Grille Guard, Flatbed, Regular Cab...my Cow feeding/farm truck ~~~
2008 F-350 6.4 POWERSTROKE!!!~~Diamond Eye 4 Inch Turbo Back DPF DELETE Exhaust, SCT SF3 3015R Race Tuner, Sinister MFG EGR Delete, AFE High Flow Filter~~NOT A SINGLE REPAIR!!~~~~
JUST SOLD>>400,000 MILES!!!~~1999 F-350 7.3 Powerstroke 6 Speed with AFE Cold Air Intake, Hypertech Max Energy, Air-Lift Load Lifter 5,000s.............and of course a Dixie Horn~~~
Sounds like you have a major vacuum leak, or some other metering issue. Check the air intake system and make sure there are no cracks or leaks between the MAF and the throttle body.
I worked on a 2000 super duty last month that kept throwing misfire codes and acted about the same as you describe. On a lark I took the EGR valve off, cleaned the valve and the EGR sensor (DPFE) fittings on the EGR tube, and the truck is good as new.
Not saying that will fix yours, but youight want to try it.
__________________
1994 F-350 7.3 IDI Turbo, crew cab, E4OD,4:10 L/S, LB, Dually Photos
ATS Turbo upgrades: 3" DP with 3" exhaust Magnaflow XL muffler: Pictures Here
2012 Copper Canyon 273 FWRET w/2 slides, Air Lift 5000 bags
Pillar pod: Autometer C2 Series gauges: pyro,trans, boost, water, oil pressure
Hypermax Cowl induction, K&N air filter, flex-a-lite 26K trans cooler with fan,Tekonsha prodigy
Train Horns: Pictures here
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.
F-250 6.0 POWERSTROKE!!!~~6.GO!!!!!~~4 inch Diamond Eye Turbo Back Exhaust, IPR Research Coolant Filter, XDP EGR Delete, ARP Head Studs & Black Diamond HGs, SCT SF3 3015 tuner, Air Lift Load Lifter 5,000s w/ On Board Compressor System~~
Linear Mode
