Dan Swenson
Active LVC Member
But every time I’d put a cold coil in it would run good for a bit. Sunday I’ll go ahead and pull the plug and share a pic.
Out of ideas, can't fix ETC Failsafe.. Please help.
- Thread starter lincoln_zero
- Start date
Dan Swenson
Active LVC Member
Getting ready to pull them now. What should static resistance be on the coil primary and secondary sides?
Dan Swenson
Active LVC Member
In order 1 through 8
AmsterDutch
Dedicated LVC Member
Interesting...I've definitely seen worse ...they look pretty good...nothing out of the ordinary here...I would think a smoke machine is your best option to be sure it's not leaking air somewhere...you said you changed your fuel filter right?
Dan Swenson
Active LVC Member
I haven’t. Is it pretty easy?
AmsterDutch
Dedicated LVC Member
Under splash guard front driver/left side ...you need the special tool to disconnect..it more than likely is rusted so be patient with the tool
Dan Swenson
Active LVC Member
Need to crank with fuel pump fuse out to depressurize?
joegr
Dedicated LVC Member
You can, but I always just throw a rag over the connection before opening it. Not much gasoline comes out. The rag soaks up most of it, but more importantly, keeps any of it from spraying in your eyes.
Dan Swenson
Active LVC Member
Awesome. Thank you.
Dan Swenson
Active LVC Member
Got the fuel filter and tool today. Rockauto just received my return on the NGK coils so I’ll order the motorcraft ones when I get a credit.
Dan Swenson
Active LVC Member
Wow great customer service. No questions asked. Ordered my motorcraft coils and NGK 7090s today. I’ll keep you all updated. Recommended gap was .044” for the ngk’s. Is that acceptable?
AmsterDutch
Dedicated LVC Member
- Apply a light film of silicone brake caliper grease and dielectric compound to the inside of the coil boots before installation.
Dan Swenson
Active LVC Member
Will do! Thanks.
Dan Swenson
Active LVC Member
Got my plugs today. The coils will be here Monday.
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AmsterDutch
Dedicated LVC Member
Just want to add there is a recommended torque on the plugs when seating them...Call me crazy but I truly believe this is really crucial to the longevity of our plugs life on the 3.9
Dan Swenson
Active LVC Member
Well so much for that.....same issue.
Dan Swenson
Active LVC Member
Still P2107 and P2110
Dan Swenson
Active LVC Member
And running rough after operating temp
Dan Swenson
Active LVC Member
Pretty sure my coolant tank has a small crack in it now too. *sigh*
Dan Swenson
Active LVC Member
Wondering if I should consider having the pcm flashed again?
Dan Swenson
Active LVC Member
Or what about an actual actual accelerator position issue? Would it cause a crap idle? Once I press on accelerator it clears up after 1500 rpm or so.
AmsterDutch
Dedicated LVC Member
So now that you know it's not a Coil Over plug issue ... are you still convinced that your throttle body is working 100%? I know you said you replaced it ...that doesn't mean it's not at fault ...also did you ever try replacing the MAF? Even if you buy a new one and it makes no difference you can still return it and get your money back...at this point without throwing anymore parts at it without having a clue whats going on ...I would say you would need a professional mechanic thast knows these cars inside and out take a look at it...the only problem is there are few and far between that know these cars...
Dan Swenson
Active LVC Member
That’s about where I’m at. I’m just so baffled as to it running perfect until warm, and then when it does go to etc failsafe it runs rough, but under throttle it clears up. I talked to the previous owner and he said he had the O2 sensors changed at one point and he said the symptoms sound similar but idk if the idle would be that bad or not? Does it make sense after operating temp? How can I test maf?
AmsterDutch
Dedicated LVC Member
You can test your MAF with Forscan and then report back with your numbers/reading I can let you know if they are checking out
Dan Swenson
Active LVC Member
Are you wanting voltage number?