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sparkybuoy this is ron again with the 86 f150 put new ...
Sent to Car Experts August 01 07:40 PM

sparkybuoy this is ron again with the 86 f150 put new relay in and grounding makes it click and the fuel pump comes on but thats the only way it works

 

Optional Information:
1986 Ford f150 5.0efi

Already Tried:
sparky knows

Customer (name blocked for privacy)
Status:  Closed   Value: $10
Answer
August 1 7:50 PM (9 minutes and 43 seconds later)
         
REPLIEDCheck Mark

If I remember correctly Ron, when you did that with the old relay it didn't pass current at all so it needed the new relay anyway.

That ground comes from the processor (computer)

You'll now need to check for the 5 volt reference at either the throttle position sensor connector or the EGR position sensor connector with the key on to make sure the processor's getting power and sending it out.

Also...that's an older EEC IV and there's a Processor main ground near the battery in a black kinda bullet shaped one wire connector that sometimes becomes unplugged or badly corroded.



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Sparkybuoy -- Auto Mechanic -- 93% Positive Feedback on 193 Car Accepts
20 years experience
Reply
August 2 10:41 AM (14 hours and 50 minutes and 46 seconds later)
         
Reply to Sparkybuoy's Post: sparkybuoy. at the egr. have 5.8 on the orange and white wire/16.0 on black/white and .448 on the brown/lt.green wire.may not have checked the throttle correctly,if it was the sensor i checked had 17 volts there, the ground is ok.
Customer (name blocked for privacy)
Answer
August 2 3:19 PM (4 hours and 38 minutes and 20 seconds later)
         
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Sparkybuoy -- Auto Mechanic -- 93% Positive Feedback on 193 Car Accepts
20 years experience
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