No power to injectors
#1
No power to injectors
I just was given this truck the fuel pump was wired directly to the battery I ran new wire to a new relay to fuel pump using a toggle switch to turn the pump on. Now I'm getting no power to the fuel injectors does the pump relay also send power to the injectors please help
#2
#3
not sure where camshaft sensor gets it power from,,,but here is a wiring link that might help,,,,,,,,,,,,Search Wiring Diagrams
#6
#7
Thats a very good link that spooktn gave you for wiring diagrams.
The injectors are powered by 12 volts from the EEC relay on solid red wires. You should hear that relay click each time you turn the key on. It's behind the kick panel just in front of the passenger door opening.
The EEC relay also powers other things under the hood like the fuel pump relay, EGR valve & others
The injectors are powered by 12 volts from the EEC relay on solid red wires. You should hear that relay click each time you turn the key on. It's behind the kick panel just in front of the passenger door opening.
The EEC relay also powers other things under the hood like the fuel pump relay, EGR valve & others
Trending Topics
#8
The ECM controls the fuel pump relay. The 86 had the FPR mounted under hood, passenger side, on the inner edge of the fender under the plastic cover. The computer relay was in the passenger side kick panel, mounted atop the computer.
The computer energizes the pump for a bit at initial key ON, then waits for SPOUT before re-energizing it. If SPOUT is missing, as in a crash or a flooded engine, the pump is left disabled. More or less.
Check to see if there are any stored codes in the EEC-IV system. Use a VOM or a tester and 'count the blinks'.
tom
The computer energizes the pump for a bit at initial key ON, then waits for SPOUT before re-energizing it. If SPOUT is missing, as in a crash or a flooded engine, the pump is left disabled. More or less.
Check to see if there are any stored codes in the EEC-IV system. Use a VOM or a tester and 'count the blinks'.
tom
Thread
Thread Starter
Forum
Replies
Last Post
Mkoch1991
1987 - 1996 F150 & Larger F-Series Trucks
5
07-31-2014 10:12 AM
kcellijay
Fuel Injection, Carburetion & Fuel System
2
11-24-2012 08:31 AM