circuit open relay help
#1
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circuit open relay help
so i put a egnblder head and cam, and timing chain kit on my 86 4runner put it all back together and it starts up immediately and dies. my fuel filter is bran spankin new and my fuel pump is fairly new. i know i have fuel to the rail because the cold start injector is spraying and doing its job. so what im thinking is its the open circut fuel relay
my question is i am getting alot of mixed information(mostly from ty alldata) on were the location of it is. i also heard you can jump terminals B+ to FP to over ride it but i cant find were those terminals are as well.ive searched every were and cant find what im looking for.
can some one help pweeeez?
my question is i am getting alot of mixed information(mostly from ty alldata) on were the location of it is. i also heard you can jump terminals B+ to FP to over ride it but i cant find were those terminals are as well.ive searched every were and cant find what im looking for.
can some one help pweeeez?
#6
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- http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump
- http://www.4crawler.com/4x4/CheapTri...CheckConnector
CO relay info:
- http://www.4crawler.com/4x4/CheapTri...ORelayLocation
#7
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ok so i found the relay. before i go and mess with it does it make sense that it would cause the fuel to get to the rail but not the injectors?
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#8
They do have the fuel pump test jumper plug:
- http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump
- http://www.4crawler.com/4x4/CheapTri...CheckConnector
CO relay info:
- http://www.4crawler.com/4x4/CheapTri...ORelayLocation
- http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump
- http://www.4crawler.com/4x4/CheapTri...CheckConnector
CO relay info:
- http://www.4crawler.com/4x4/CheapTri...ORelayLocation
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ok so i got to work on it today and got a few possible leads. after messing around for a while i started it and kept running tried to drive it and it died, tried starting it again and it did what it did before running then dying 2 seconds later. this is leading me to think it might be the computer but i dunno why it would suddenly go bad after doing some work to the engine. but stuff happens lol.
i pulled an injector wire and used a test light on it and it has power to both pins in the connector. im no electrical expert but shouldnt there only be power to one pin and the other be a ground? could this be my problem?
there is also this wire that i cant remember taking off before tore everything apart i didn't even label it which makes me think that it supposed to be unconnected but heres a pic to see if you know what it is just in case.(wire sticking up with black connector)
.
there is also a relay inside the driver side kickpanel fuse box thats labeded above it- EFI R. CHECK BULB R. i noticed gets a little warm but it still Clicks when you turn on the ignition.could this be the culprit for fuel not getting past the injectors? heres a pic (round silver one)
bear with me people of yotatech lol.
i pulled an injector wire and used a test light on it and it has power to both pins in the connector. im no electrical expert but shouldnt there only be power to one pin and the other be a ground? could this be my problem?
there is also this wire that i cant remember taking off before tore everything apart i didn't even label it which makes me think that it supposed to be unconnected but heres a pic to see if you know what it is just in case.(wire sticking up with black connector)
.
there is also a relay inside the driver side kickpanel fuse box thats labeded above it- EFI R. CHECK BULB R. i noticed gets a little warm but it still Clicks when you turn on the ignition.could this be the culprit for fuel not getting past the injectors? heres a pic (round silver one)
bear with me people of yotatech lol.
Last edited by rube; 04-29-2010 at 04:49 PM.
#11
there is a ground wire that runs from the wire harness to the plenum make sure that is hooked up. I forgot to hook mine up and it took me two weeks to figure it out.
That wire should go to one of the little vacuum valves on top of the valve cover. the front one if i remember correctly
That wire should go to one of the little vacuum valves on top of the valve cover. the front one if i remember correctly
Last edited by takeitoutgetitdirty; 04-29-2010 at 04:19 PM.
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yep that ground is hooked up. ive been over the harness 100 times lol.
as for the vaccum valve your talking about i dont have one so i dunno about it.
thanks for the input man
as for the vaccum valve your talking about i dont have one so i dunno about it.
thanks for the input man
#14
You can check that with a noid light. (ground that is) you said you checked the harness but what about the splices inside the harness. The splices inside the harness can break and not give you ground. Power comes to the injectors by the resistor on the pass. side fender. and the ECU sends ground pulses to the injectors.
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thanks for the info. i guess i will be finding myself a noid light in my near future.
but a break in a wire would probably only cause one injector to malfunction wouldn't it?
but a break in a wire would probably only cause one injector to malfunction wouldn't it?
#16
no they fire in batches, 1&3, 2&4 so depends on where the break is depends on what is going on. I would cut the tape off and inspect the splices in the harness before looking for a noid light, they can be hard to find sometimes. would take about 30 mins to do so.
#17
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Actually all 4 injectors fire at the same time, but there are wiring splices that can go bad causing one or more injectors not to fire.
- http://www.4x4wire.com/forums/showfl...=&fpart=1&vc=1
- http://www.4x4wire.com/forums/showfl...=&fpart=1&vc=1
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