External fuel pump
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Senior User
Joined: Apr 2012
Posts: 452
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OK, Vince -
After cleaning and greasing ALL connectors including those to sensors and fuel injectors (except the bank under the intake manifold), I hosed down the car and engine compartment. I gave it a good drenching and especially sprayed the connector to the fuel pump. Started right up. The true test will be if it rains overnight or I hose it down again tonight and let it sit and try to start it first thing tomorrow, if it starts then. But I think it will and what you offerred did the trick.
I ordered a new ECM (E5TF-12A650-S1B,101558,JRG) from some junk yard in Jersey. We'll see if that cures the inability to get codes. I'll let you know.
Thanks for hanging in there with me (the same to ctubutis and Gary)!
Steve
After cleaning and greasing ALL connectors including those to sensors and fuel injectors (except the bank under the intake manifold), I hosed down the car and engine compartment. I gave it a good drenching and especially sprayed the connector to the fuel pump. Started right up. The true test will be if it rains overnight or I hose it down again tonight and let it sit and try to start it first thing tomorrow, if it starts then. But I think it will and what you offerred did the trick.
I ordered a new ECM (E5TF-12A650-S1B,101558,JRG) from some junk yard in Jersey. We'll see if that cures the inability to get codes. I'll let you know.
Thanks for hanging in there with me (the same to ctubutis and Gary)!
Steve
Car-Part.com--Used Auto Parts Market
Used, Junk Yard ECA's; Car-Part.com--Used Auto Parts Market
Part Search; Select Part = "Engine Computer"
Search by year.
Suggest you order a xxx = "S1B".
E5TF-12A650-S1B
Used, Junk Yard ECA's; Car-Part.com--Used Auto Parts Market
Part Search; Select Part = "Engine Computer"
Search by year.
Suggest you order a xxx = "S1B".
E5TF-12A650-S1B
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From: Denver Metro Area, CO
Yeah, you really need to pay attention to all those details (program code revision, aka catch code) when you go buying a new computer; sometimes you can come across one that "might/could/should work" but they're not at all a generic, plug-n-play-type of item and easily swappable.
Your truck is a 1985 302 automatic trans 2wd and the eighth character in your VIN is the letter 'N' correct?
Your truck is a 1985 302 automatic trans 2wd and the eighth character in your VIN is the letter 'N' correct?
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
Likes: 11
From: Exmore, VA
I have 2 or 3 of those early EFI 5.0 EECs left over from Archion's debacle with his. He brought them and the spare harness set to me, since I had bought them when we were dealing with it. I think there were 8 or 10 changes between mid 85 and the end of production in 1986.
One thing on those to take a long hard look at, near the battery negative post, attached to it, is a plug with a black/light green wire (or pair) that grounds the entire EEC system. It is a common issue on these as the connector is not a weather proof one and any extra resistance will drive the EEC crazy.
One thing on those to take a long hard look at, near the battery negative post, attached to it, is a plug with a black/light green wire (or pair) that grounds the entire EEC system. It is a common issue on these as the connector is not a weather proof one and any extra resistance will drive the EEC crazy.
Last edited by 85lebaront2; Jul 14, 2016 at 06:37 PM. Reason: Added note on ground connector
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
Likes: 11
From: Exmore, VA
They had a test plug pair up by the MAP sensor and solenoids in the right front (see the 86 EVTM). One of the big problems was the adjacent ground connector.
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Thread Starter
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Senior User
Joined: Apr 2012
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Yes, the letter N.
Yeah, you really need to pay attention to all those details (program code revision, aka catch code) when you go buying a new computer; sometimes you can come across one that "might/could/should work" but they're not at all a generic, plug-n-play-type of item and easily swappable.
Your truck is a 1985 302 automatic trans 2wd and the eighth character in your VIN is the letter 'N' correct?
Your truck is a 1985 302 automatic trans 2wd and the eighth character in your VIN is the letter 'N' correct?
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
OK, Vince -
After cleaning and greasing ALL connectors including those to sensors and fuel injectors (except the bank under the intake manifold), I hosed down the car and engine compartment. I gave it a good drenching and especially sprayed the connector to the fuel pump. Started right up. The true test will be if it rains overnight or I hose it down again tonight and let it sit and try to start it first thing tomorrow, if it starts then. But I think it will and what you offerred did the trick.
I ordered a new ECM (E5TF-12A650-S1B,101558,JRG) from some junk yard in Jersey. We'll see if that cures the inability to get codes. I'll let you know.
Thanks for hanging in there with me (the same to ctubutis and Gary)!
Steve
After cleaning and greasing ALL connectors including those to sensors and fuel injectors (except the bank under the intake manifold), I hosed down the car and engine compartment. I gave it a good drenching and especially sprayed the connector to the fuel pump. Started right up. The true test will be if it rains overnight or I hose it down again tonight and let it sit and try to start it first thing tomorrow, if it starts then. But I think it will and what you offerred did the trick.
I ordered a new ECM (E5TF-12A650-S1B,101558,JRG) from some junk yard in Jersey. We'll see if that cures the inability to get codes. I'll let you know.
Thanks for hanging in there with me (the same to ctubutis and Gary)!
Steve
Call them to verify the three digit code in that right hand block, if it is not GSI, then see if you can cancel your order. I agree, should be a GS1.
There are some at that site for about $50. `+ shipping. I saw a "SB" version as well.
I’m guessing the version progression is SA – S1A – S2A – SB –S1B – S2B
What is the date of build for your truck?
Last edited by vjsimone; Jul 14, 2016 at 08:46 PM. Reason: Adding text
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
OK. All connectors are cleaned and greased including connectors to sensors. I also saw that there's a boot (drain) that empty's directly onto a plug connector that connects to the external fuel pump. Don't know if that was the issue regarding the pump issues, but I cleaned that connector and greased it up as well. Will have to wait until another rain (probable today) to see if the fuel pump/injector engagement issue has been cleared up. Or, I could just hose everything down again and test it out, which I'll likely do.
Seems you're leaning to the ECM as the problem with regard to pulling codes. Since the 85 second half of the year was the first EFI for the F150, would you recommend I search by the year 1986, or doesn't it matter?
Seems you're leaning to the ECM as the problem with regard to pulling codes. Since the 85 second half of the year was the first EFI for the F150, would you recommend I search by the year 1986, or doesn't it matter?
I have seen a date code of Feb 85', VIN "N" with your same system. Mine is dated July 85 VIN 'N', and most likely the same model as yours.
Cargo Master
Joined: Jun 2013
Posts: 3,182
Likes: 15
From: Somewhere n North America
OK. All connectors are cleaned and greased including connectors to sensors. I also saw that there's a boot (drain) that empty's directly onto a plug connector that connects to the external fuel pump. Don't know if that was the issue regarding the pump issues, but I cleaned that connector and greased it up as well. Will have to wait until another rain (probable today) to see if the fuel pump/injector engagement issue has been cleared up. Or, I could just hose everything down again and test it out, which I'll likely do.
Seems you're leaning to the ECM as the problem with regard to pulling codes. Since the 85 second half of the year was the first EFI for the F150, would you recommend I search by the year 1986, or doesn't it matter?
Seems you're leaning to the ECM as the problem with regard to pulling codes. Since the 85 second half of the year was the first EFI for the F150, would you recommend I search by the year 1986, or doesn't it matter?