Missfire problem solved
Thread Starter
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Champion
Joined: Jun 2004
Posts: 2,811
Likes: 2
From: Ft Campbell, KY/TN
Missfire problem solved
I just about gave up and i took my truck to a performance mechanic shop. THey were so backlogged that they said they couldn't get to my truck in a week so they came over to it to give me some tips.
They scanned it and it said !3 coil error and #2 injector missfire. They took one look at my injector connectors and said "Your injector problem is beacause your connectors don't have the wire clips that hold them down tight." He gave me some mechanics wire and told me to get the clips or splice innew ford EVO connectors (to go with the ford blue top injectors). He told me that the coil error may be because my coil wire was touching 3 other spark plug wires, causing interference. He then routed my col wire under the injector harness in thatgulch where the head meets the intake, under the injector wires.
Needless to say, 3 starts later, no more engine code and my missfire was fixed after going there. He didn't charge me anything.
So if you have a missfire, make sure your injector connectors are tight and have the wire clips. Also make sure your plug wires and coil wires are loomed properly and the coil wire isn;t touching any other wire.
he also said that if you reset your computer (unhook battery for 5 mins or so) then start it, the check engine light should not immediately come on. He said if that happens it is a fault in the wiring or computer. But before you think your conputer is bad, you may just have a connector unhooked. So if you have a misfire, reset the system and see if the check engine light immediately comes on. If it does, then you know its because a sensor doesn't work, is unhooked, or last thing the PCM is fried.
Hope this helps.
EDIT: This usually happens after you take the injector connectors off the injectors. Like when redoing a plenum or any job that people might disconnect their injectors. If you do your plenum, and are getting a miss, think back and look to see that you have those small rectangular thin wire clips that go around your injector connectors. I am not talking about the metal tabs that keep the injectors seated in the rail.
--Dan
They scanned it and it said !3 coil error and #2 injector missfire. They took one look at my injector connectors and said "Your injector problem is beacause your connectors don't have the wire clips that hold them down tight." He gave me some mechanics wire and told me to get the clips or splice innew ford EVO connectors (to go with the ford blue top injectors). He told me that the coil error may be because my coil wire was touching 3 other spark plug wires, causing interference. He then routed my col wire under the injector harness in thatgulch where the head meets the intake, under the injector wires.
Needless to say, 3 starts later, no more engine code and my missfire was fixed after going there. He didn't charge me anything.
So if you have a missfire, make sure your injector connectors are tight and have the wire clips. Also make sure your plug wires and coil wires are loomed properly and the coil wire isn;t touching any other wire.
he also said that if you reset your computer (unhook battery for 5 mins or so) then start it, the check engine light should not immediately come on. He said if that happens it is a fault in the wiring or computer. But before you think your conputer is bad, you may just have a connector unhooked. So if you have a misfire, reset the system and see if the check engine light immediately comes on. If it does, then you know its because a sensor doesn't work, is unhooked, or last thing the PCM is fried.
Hope this helps.
EDIT: This usually happens after you take the injector connectors off the injectors. Like when redoing a plenum or any job that people might disconnect their injectors. If you do your plenum, and are getting a miss, think back and look to see that you have those small rectangular thin wire clips that go around your injector connectors. I am not talking about the metal tabs that keep the injectors seated in the rail.
--Dan
Last edited by CPTAFW163; Mar 14, 2012 at 02:17 AM.
Administrator
Joined: Jul 2007
Posts: 24,686
Likes: 21
From: South Georgia/East Florida
RE: Missfire problem solved
Good shops like the one that helped you are getting hard to find these days. KRC Performance is a couple of miles from me, and I've always found them to be the same way. I do most of the work myself, so I don't use them often, yet they will always take the time to shoot me some free advice or just let me run my modding plans by them. As a result, I don't mind purchasing a few things from them to install myself even though I can get it cheaper on the net.
They were about $30 higher on my e-fan, but had them order it anyway. They were about the same on my headers but gave me great advice on having them drop ship them to a local coating shop they use for a far superior ceramic coating.
My view is, if you find a shop like that, it's a rare find, and if it's at all possible, do what little you can to help them continue to stay in business...
They were about $30 higher on my e-fan, but had them order it anyway. They were about the same on my headers but gave me great advice on having them drop ship them to a local coating shop they use for a far superior ceramic coating.
My view is, if you find a shop like that, it's a rare find, and if it's at all possible, do what little you can to help them continue to stay in business...
Thread Starter
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Champion
Joined: Jun 2004
Posts: 2,811
Likes: 2
From: Ft Campbell, KY/TN
RE: Missfire problem solved
Yeah, i am gonna have them replace my fan shroud. Number one, i don't think that i can get the clutch fan off without breaking it, and it shouldn't take them too long. Also maybe replace me brake shoes.I never did that before and i have a 1500 mile trip to California in a few weeks. I am moving and I don;t want to put the fate of my truck in my hands. Plus they can give it a good once over.
--Dan
--Dan
