85 injector/something?
#1
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Join Date: Jul 2006
Location: Arkansas
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85 injector/something?
Hello to all. I am new here and in need of some tech help. i have a 85 pickup with 22re my fuel injectors are not firing, they are getting power but on both sides of the plug, a friends yota gets power to only one side of the plugs, I was told that it could be in the the dist or the fuel relay?? How do we know any advice would help alot thanks.. Charles
#4
Hey guys,
This is the poor son of a @$#% that's workin on the truck. I'm a little new to yotas myself. How do we figure out which terminal is which. The books we have tell you to go to such and such terminal but they don't tell you how to find them. I even bought a subscription for it on All Data. NOPE! I guess we need a factory service manual? Or is there a good source for that info online? Any help is greatly appreciated. Thanks.
Steve
This is the poor son of a @$#% that's workin on the truck. I'm a little new to yotas myself. How do we figure out which terminal is which. The books we have tell you to go to such and such terminal but they don't tell you how to find them. I even bought a subscription for it on All Data. NOPE! I guess we need a factory service manual? Or is there a good source for that info online? Any help is greatly appreciated. Thanks.
Steve
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#8
Contributing Member
iTrader: (3)
The FSM shows most of the connectors w/ pinouts as well as wire colors in the wiring diagram:
- http://www.4crawler.com/4x4/FSM.shtml
- http://www.4crawler.com/4x4/FSM.shtml
#9
Hey....
Pretty stumped here. We've got intermitent power at both terminals for each fuel injector. Pulled the computer apart and from the looks of the circuit board the no. 10 and no. 20 just make a loop in the computer. Both terminals go to the ground side of the injectors. Pulled the wiring harness apart too. I don't see were the ground comes in. All wires have continuity and there is continuity through the no.10-no.20 terminals in the computer. They don't go to ground though. All four wires on the ground side of each fuel injector connect to the two wires which come from the no. 10 and no. 20 terminals on the computer. It doesn't make any sense. But If I ohm between the injecotors and the body ground I get 2.7 ohms. It should be fully grounded, should it not?
Pretty stumped here. We've got intermitent power at both terminals for each fuel injector. Pulled the computer apart and from the looks of the circuit board the no. 10 and no. 20 just make a loop in the computer. Both terminals go to the ground side of the injectors. Pulled the wiring harness apart too. I don't see were the ground comes in. All wires have continuity and there is continuity through the no.10-no.20 terminals in the computer. They don't go to ground though. All four wires on the ground side of each fuel injector connect to the two wires which come from the no. 10 and no. 20 terminals on the computer. It doesn't make any sense. But If I ohm between the injecotors and the body ground I get 2.7 ohms. It should be fully grounded, should it not?
#13
OK, we're making progress. I fixed a ground and cleaned up some stuff so the injectors should have what they need but they still don't shoo fuel. It just sprays from around the o-rings. I ohmed the injectors and all were 2.4 but I guess that doesn't guarantee they're good. I wish I had some spares or a way to test them at home. I may just next day them to Witch Hunter and be done with it.
If they were plugged would they still buzz? Because they don't.
I read all of the threads you've posted. Thanks for the help.
If they were plugged would they still buzz? Because they don't.
I read all of the threads you've posted. Thanks for the help.
#14
Contributing Member
iTrader: (3)
Omh test says the windings are fine. I don't think they should make any noise aside from the initial click as the open and close. Basically just like a relay. Well worth having them cleaned, tested and flow balanced, I used RC Engr:
- http://www.4crawler.com/4x4/CheapTri...html#Injectors
- http://www.4crawler.com/4x4/CheapTri...html#Injectors
#15
Well I had the injectors tested today. They squirt like champs.
Tested computer
Tested resistor
checked for continuity in the wire harness
What tells the computer when to fire the injectors? A local guy is trying to tell me it's in the distributor. Is it that or does it have a cam or crank position sensor?
Tested computer
Tested resistor
checked for continuity in the wire harness
What tells the computer when to fire the injectors? A local guy is trying to tell me it's in the distributor. Is it that or does it have a cam or crank position sensor?
Last edited by shrek2; 07-31-2006 at 05:15 PM.
#16
Registered User
Originally Posted by shrek2
What tells the computer when to fire the injectors?
#17
Contributing Member
the distributor sends a signal to the igniter which sends the signal to the computer thru the 3-wire plug coming out of it, make sure those wires are not broken, they come close to the exhaust manifold and will get hard and break over time...
#20
Contributing Member
iTrader: (3)
I show the ECU connector pinouts on the following web page:
- http://www.4crawler.com/4x4/CheapTri...roubleshooting
And the Factory Service Manual has an extensive section on troubleshooting no-start problems as well as testing the ECU connections:
- http://www.4crawler.com/4x4/FSM.shtml
- http://www.4crawler.com/4x4/CheapTri...roubleshooting
And the Factory Service Manual has an extensive section on troubleshooting no-start problems as well as testing the ECU connections:
- http://www.4crawler.com/4x4/FSM.shtml