'99 5.4 Misfire - Power Loss - Etc...
#1
'99 5.4 Misfire - Power Loss - Etc...
Hey guys, my 99 E250 is acting up. No power, very sluggish, rough idle, feel it in steering wheel etc...
First thing I did was change fuel filter. No change.
A week ago I scanned it, and it say P0306 Cylinder 6 Misfire. Also, P0174system too lean. I put new plugs in and cleared the codes out.
I pulled fuel rails and injectors and used a 9V battery, carb cleaner, etc and did the DIY injector cleaning like I always do.
At that time I took off all 8 coils ohmed them. They were all identical results. I jumbled them up and put them in different holes. I put in new motorcraft platinum plugs.
Now a week later (still running like crap) I checked fuel pressure. It's 31psi at idle, 40psi with vaccum disconnected and 40psi under load. I rescanned it and its coming up with P0308 Cylinder 8 Misfire.
By process-of-elimination does it appear that I have a bad coil? That the #6 coil got put in #8 hole and it's just simply bad? Any other ideas on where else to check?
Any help would be great. Thank you!
First thing I did was change fuel filter. No change.
A week ago I scanned it, and it say P0306 Cylinder 6 Misfire. Also, P0174system too lean. I put new plugs in and cleared the codes out.
I pulled fuel rails and injectors and used a 9V battery, carb cleaner, etc and did the DIY injector cleaning like I always do.
At that time I took off all 8 coils ohmed them. They were all identical results. I jumbled them up and put them in different holes. I put in new motorcraft platinum plugs.
Now a week later (still running like crap) I checked fuel pressure. It's 31psi at idle, 40psi with vaccum disconnected and 40psi under load. I rescanned it and its coming up with P0308 Cylinder 8 Misfire.
By process-of-elimination does it appear that I have a bad coil? That the #6 coil got put in #8 hole and it's just simply bad? Any other ideas on where else to check?
Any help would be great. Thank you!
#2
Hey guys, my 99 E250 is acting up. No power, very sluggish, rough idle, feel it in steering wheel etc...
First thing I did was change fuel filter. No change.
A week ago I scanned it, and it say P0306 Cylinder 6 Misfire. Also, P0174system too lean. I put new plugs in and cleared the codes out.
I pulled fuel rails and injectors and used a 9V battery, carb cleaner, etc and did the DIY injector cleaning like I always do.
At that time I took off all 8 coils ohmed them. They were all identical results. I jumbled them up and put them in different holes. I put in new motorcraft platinum plugs.
Now a week later (still running like crap) I checked fuel pressure. It's 31psi at idle, 40psi with vaccum disconnected and 40psi under load. I rescanned it and its coming up with P0308 Cylinder 8 Misfire.
By process-of-elimination does it appear that I have a bad coil? That the #6 coil got put in #8 hole and it's just simply bad? Any other ideas on where else to check?
Any help would be great. Thank you!
First thing I did was change fuel filter. No change.
A week ago I scanned it, and it say P0306 Cylinder 6 Misfire. Also, P0174system too lean. I put new plugs in and cleared the codes out.
I pulled fuel rails and injectors and used a 9V battery, carb cleaner, etc and did the DIY injector cleaning like I always do.
At that time I took off all 8 coils ohmed them. They were all identical results. I jumbled them up and put them in different holes. I put in new motorcraft platinum plugs.
Now a week later (still running like crap) I checked fuel pressure. It's 31psi at idle, 40psi with vaccum disconnected and 40psi under load. I rescanned it and its coming up with P0308 Cylinder 8 Misfire.
By process-of-elimination does it appear that I have a bad coil? That the #6 coil got put in #8 hole and it's just simply bad? Any other ideas on where else to check?
Any help would be great. Thank you!
If you could get a known good coil and place it on # 8 and see if it clears up or continue to move #8 to another location and see if symptoms continues to follow.
only suggestions that springs to mind, is to clean the throttle body...AIC...& MAF.. and possibly the EGR. Also make sure you don't have a vacuum leak, double check the PCV valve and the elbow on rear side of the throttle body. Oh and make sure you have those new plugs torqued in @ 28ft-lbs
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