Please Help - Boat Stranded LOL - P0171 & P0305

[smoedog]

Ok so back story is ford replaced all coil and plugs except #5 & #6 a year ago. Last month I was getting P0305 so I swapped the coil and all is good.

Now today I was towing my boat to the lake and was going up a hill in town and just started losing power. I was crawling up the hill at 10mph and CEL was flashing. Limped to the lake, went boating came back and fired up the truck and seems to be running normal. Put the boat on the trailer and go to pull out and couldn't make it up the ramp just revved to 2k ish. Had to put it in 4 LO to get up the ramp. Started heading back home and could feel an obvious loss of power. Started going up a hill and had to floor it to get the tranny ti kick down and as soon as I hit 3k it started pinging. Left the boat at a hotel and headed home. Still showing lack of power and pinging at 3k. Got to a very steep hill by my house thats about a 1/4 mile climb, started at 40 and by the top i was crawling at 10mph.

I get home and scan for codes and p0305 popped up. Went to the parts store and exchanged the coil for a new one. Pull out on the road and floor it and as soon as i hit 3k it started pinging and losing power again, plus another flashing CEL.

Ran the codes again and this time got p0305 and p0171. Any ideas? I'm going to try to pull the plug tomorrow but doubt I will be successful.

Other than that it seems to run good other than a little rough idle and down on power. this is an 05 with 130K on the clock.

 

[smoedog]

Well the plug is giving me a hard time like i figured. took a break to let the pb blaster to set in. Decided to pull the drivers cat cuz I knew it was on its way out and sure enough it was broken apart. I cleared the rest out and put everything back together. Cleared the codes and took it around the block. still detonating at 3k, stumbling at idle and now I have P0305 and P2197.

Gonna go get some starter fluid and see if i can find this leak.

Any Ideas. Everyone talks about the PCV elbow, but I assume I dont have one since I dont have a PCV valve

 

[rex450se]

Since the 305 code was the first, I would start there. Eliminate that one and then move on. I believe a bad #5 spark plug is the culprit. I may just be a weekend mechanic but in my experience the first code to pop up can be the culprit causing a few others down the line. Especially when it comes to a bad plug or cop. If it is a bad plug and that fuel isn't getting burned, just pushed down the line, it may cause other sensors to throw error codes saying something is wrong. Just my .02

Victor

 

[smoedog]

Ok, here is the latest. I got #5 out and it was shot. put new plug in and still got a misfire. swapped 5&6 coils (#5 coil is brand new) and now im getting p0355.

#5 coil is plugged in tight, tried it twice and still nothing. Guess I'll go get another coil.

 

[smoedog]

Ok I think I fixed the ignition issue.

Changed #5 Spark plug and another coil. So overall all the coils are a year old or newer and the same for all the plugs except #6.

Not getting anymore misfires or circuit errors.

Now I am getting P2197 - O2 Sensor Stuck Lean Bank 2 Sensor 1

Does This have anything to do with my gutted cat? I figure I would get a inefficent cat error. I don't wanna go throw an O2 sensor at it if its not gonna fix the problem

 

[smoedog]

Anybody?

 

[JUST4FUN]

Induction System:
Air leaks after the MAF
Vacuum Leaks
PCV system
Improperly seated engine oil dipstick

EGR System:
Leaking gasket
Stuck EGR valve
Leaking diaphragm or EVR

Base Engine:
Oil overfill
Cam timing
Cylinder compression
Exhaust leaks before or near the HO2S(s)