Unable to pull EEC codes
Thread Starter
|
New User
Joined: May 2011
Posts: 24
Likes: 0
From: Lancashire United Kingdom
Unable to pull EEC codes
Hi guys
I'm currently struggling to be able to pull the EEC iv codes on my 1986 f150 302 EFI.
I've tried my innova code reader and no test will start. I have tested code reader, it works on another vehicle.
I have also tried the jumper wire method to make the light on dash flash. This again does not work.
The truck has power.
The motor will crank but not start.
I have no power to fuel pumps as well.
I have tested the power relay and this has 12v on both circuits with ignition on.
Any suggestions where to look/ test next?
Any help would be much appreciated.
I'm currently struggling to be able to pull the EEC iv codes on my 1986 f150 302 EFI.
I've tried my innova code reader and no test will start. I have tested code reader, it works on another vehicle.
I have also tried the jumper wire method to make the light on dash flash. This again does not work.
The truck has power.
The motor will crank but not start.
I have no power to fuel pumps as well.
I have tested the power relay and this has 12v on both circuits with ignition on.
Any suggestions where to look/ test next?
Any help would be much appreciated.
Thread Starter
|
New User
Joined: May 2011
Posts: 24
Likes: 0
From: Lancashire United Kingdom
Sadly not yet. Am working my way through checking all my earthpoints as read about earth issue on other posts.
Is there any way to bell out the eec?
Is there any way to bell out the eec?
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Thread Starter
|
New User
Joined: May 2011
Posts: 24
Likes: 0
From: Lancashire United Kingdom
I assume you've found the EVTM here: 1986 EVTM - ???Gary's Garagemahal
Thankyou very much. That's a great resource you have there. Nice work.
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
Here are the EEC-IV no-start diagnostics from the shop manual.
You will need a volt/ohm meter, they have you checking for voltages at specific locations, checking for shorts to ground, etc.
Notice that the EEC power relay, the fuel pump relay, the injectors and several of the sensors, they are all provided power by a single circuit and a short anywhere in that wiring is gonna take all that stuff out.
Notice also there is a fusible link up at the starter solenoid.
Let me know if you can't read any of these.... good luck and please keep us posted on your progress.
You will need a volt/ohm meter, they have you checking for voltages at specific locations, checking for shorts to ground, etc.
Notice that the EEC power relay, the fuel pump relay, the injectors and several of the sensors, they are all provided power by a single circuit and a short anywhere in that wiring is gonna take all that stuff out.
Notice also there is a fusible link up at the starter solenoid.
Let me know if you can't read any of these.... good luck and please keep us posted on your progress.
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Chris - Reps for that - although something I did caused the note to send before I was ready. It was to read "Lot'sa work, well done!" rather than "Lot".
Trending Topics
Moderator
Joined: Nov 2007
Posts: 22,415
Likes: 92
From: Denver Metro Area, CO
Thanks, Gary, the lots-of-work part is why I left it alone for a while and was hoping somebody else would try and help the guy.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
So, if I were to put this on my web site, then you/we wouldn't have to do the work again. OK? (That's the idea of a subroutine - write once, use many times. You get the reference, but many won't. Anyway, I'm averse to doing WORK! [Thanks to
.] And I really hate doing WORK! multiple times. 
)
)
Thread Starter
|
New User
Joined: May 2011
Posts: 24
Likes: 0
From: Lancashire United Kingdom
Wow now that is some serious information. Thankyou so very much. I'll get cracking on running through these tests and will respond with the results.
Thanks again gents
Thanks again gents
FTE Legend
Joined: Jul 2010
Posts: 32,875
Likes: 48
From: Northeast, OK
Cargo Master
Joined: Jun 2013
Posts: 3,174
Likes: 15
From: Somewhere n North America
Following.....