Yes. I've been doing that and every time I do, I see there's several posts that I didn't get a notification for.

 

Steve - I like Vincent's approach of using the ubiquitous check valve. If that works you won't need a new reservoir.

 

Don't forget this;

" There may also be other replies, but you will not receive any more notifications until you visit the forum again.

All the best,
Ford Truck Enthusiasts Forums "

Thank the Lord, on this Thead......

 

Steve, when you get the chance, check Pin #49 at the ECA connector.

Neg. test lead to ground, Pos. test lead to Pin #49. Resistance check. Rx200 Ohms.

 

Steve, I cannot find where you checked these Pin#s to ground??

 

I remember doing pin 49 and it was ok. I don't remember doing pin 20 and 40.
I'll do those two later today. Church day for us so I'll be gone most of the morning.

 

Ok, when you get the chance. But check Pin #49 again as well, record your readings. Thanks.

 

Well, it rained last night. It rained HARD! My truck, well, IT STARTED RIGHT UP!!! Thanks, folks!!!

I will follow through in checking those remaining pins today. Just have to figure exactly which wires they lead to. Using http://www.garysgaragemahal.com/eec-iv-diagnostics.html, it'll be a snap!

 

Something's not right. Likely user error.

Battery disconnected - Paper clip to alligator clips, with paper clip in correct pin hole and remaining clip grounded.

Pin#49 - not sure of the wire to check but do have a wire with ground to firewall and checked that. Got 1. reading. Checked surrounding grounds with same results.

Pin #40 - Checked battery ground again with same results (1). This is the one I checked before and had positive results so I am thinking the ground I'm creating with the alligator clip isn't good.

Pin #20 - Not sure where to connect this. Tried it both on the spout and on the TFI connector. Got a 1.

Possibly having trouble grounding the alligator clip. I tried door hinges, high beam switch on the floor, other metal parts under the dash.

I checked I had correct pin-holes several times.

Pin QUOTE=vjsimone;16446715]Ok, when you get the chance. But check Pin #49 again as well, record your readings. Thanks.[/QUOTE]

 

Make sure you have a good body ground from the NEG post of the battery to the body of the truck. We are not talking about the frame here.

 

OK. Will do that. Were my connections on pin 20 correct? Spout or TFI?

 

Have you been able to look at the diagrams on garysgaragemahal (http://www.garysgaragemahal.com/elec...control.html)? Ground pins are 20, 40 & 60 they will be across one end of the EEC connector. Pin #49 is the O2 sensor signal ground and probably goes to the engine ground point. The other 3 all go to the problematic ground connection at the battery negative cable. This is the one that causes most of the problems with the 1985.5 and 1986 5.0L EFI systems.

For a good ground, look near the EEC area on the firewall, there is a ground point, G701, near the right side of the radio. That should give you a good connection. FWIW, this is the ground for the fuel pumps, gas gauge, rear lights essentially about half the truck (not one of Ford's "better ideas".

 

That's a very good question. They both appear to be hooked up. I'll have to investigate further. I also am getting a code 34.

 

I actually looked at this diagram: EEC-IV Diagnostics - ???Gary's Garagemahal

I'll tried to find a better ground for my alligator clip.

Thanks!!

Steve

 

[/QUOTE]

Steve, No paperclip, just your meter, Negitive/Black meter lead to a ground under your dash. Positive/Red test to check each pin. Remove only the Positive battery terminal this time.