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Well with the tps unplugged I wiggle the connecter that comes out of the loom for the tps and they still click so I think there is a problem in the loom but would this somehow be related to the injectors not firing and with how sensitive this plug is it would make sense that the problem started only happening while driving so the bouncing moved this plug around and somehow causes the injectors to stop firing ?
The wiring harness you are moving around likely contains more than the 3 wires to the TPS. Of the 3 TPS wires only one should have an affect on the solenoids and that would be the Green/Red wire as it outputs voltage to the ECU which then controls the two solenoids mentioned. The G/R wire would have voltage on it w/key to on even if it was not plugged to the sensor.
So I tested the green wires and there is power there. I couldn't find my test light so I used my dvom to plug into the green wire and the black wire to see what would happen and as I was cranking the numbers started jumping around so I would thing that that meant that it was pulsing . So then I hooked a a wire up to the green wire and tapped it to ground and I could hear the injector click . So then I manually turned the fuel pump on and started cranking while grounding that injector and nothing happened so then I pulled the plugs and they are still dry and when I manually turned the pump on from the test terminal under the hood I could hear what sounded like a leaking injector so I thought at least that would put fuel in the engine and it would try to start but it still didn't and all the plugs were bone dry so maybe that noise was some kind of block in the fuel rail system but I still get fuel coming out of the return line . This isn't making any sense lol
You should not ground the Green injector wires as they are supposed to be pulsed w/the briefest of grounding. And if you have 7 volts on the Brown wire then there could be a grounding issue.
The Green injector wires have power with key to on but pulse w/key to start. A multimeter is not going to be of much help.
I just used the meter cause I couldn't find my test light . So I figured if anything was hopping the meter would jump around and at least react when cranking and it did . I just tapped the wire when I grounded it
I just used the meter cause I couldn't find my test light . So I figured if anything was hopping the meter would jump around and at least react when cranking and it did . I just tapped the wire when I grounded it
A test light will not suffice unless it is an LED light with a resistor built in otherwise damage could be done to the circuitry (Radio Shack supplies them for $2).
Yes it pulsed on both but with doing a bunch of tests I drained the battery so later tonight when the battery is charged I will put some gas in the intake and see what happens and if it does start then I guess I'm pulling off the intake manifold to get at the injectors to see what's going on
So I put some starter fluid in the intake and it started right up so I guess I have no choice but to pull the lower intake manifold and see what's going on with the injectors cause there's nothing else I can think of to test cause I know the injectors are getting power thru them cause I tested the green wires . I checked to make sure the ecu was pulsing the injectors and it is . I manually fired each injector and I could hear them click . I tested to make sure fuel was flowing thru the rail by seeing if it was coming out of the return line and it is . So my only thought is that the injectors are plugged up . Or is there a way for the fuel to not reach the primary injectors but still come out of the return line like does the fuel flow thru the rail for the primary injectors and then flow thru the rail for the secondaries or does it split and both the primaries and secondaries have there own supply and thanks for all the input so far in checking the other systems and with checking at the ecu
After looking at the fuel system diagram it looks like if the fuel pressure regulated malfunctioned the the fuel would never reach the injectors and just go back to the tank right ?
4 months later we will find out the fuel pump was bad the whole time.
if it perhaps isn't the pump, my second guess would be a corroded ground strap on top of the engine.
did your injectors make an audible click when you grounded them at the ECU?
your TPS and solenoid issue has nothing to do with the starting issue, just the car throwing a distraction at you. as well as your FPR disconnected, the FPR cannot keep fuel from the engine, i have never seen one rupture completely to cause zero fuel pressure and i don't even think it is possible, even the ones that leaked externally still had adequate fuel pressure. plug the FPR and the TPS back in and forget about them until the car is running again, they may not even have issues at all, like say a low battery would cause those things to tweak out.
if i actually had my true 30k posts would it give me more credibility? or do i have to continue to scrunch my face when people just move past my tips without a second thought.
renting a pressure gauge is a pain, i know, but so is running in circles for weeks doing unecessary things. and make sure to keep the battery fully charged when doing diagnostics.
Last edited by RotaryEvolution; 01-09-17 at 01:17 PM.
4 months later we will find out the fuel pump was bad the whole time.
if it perhaps isn't the pump, my second guess would be a corroded ground strap on top of the engine.
did your injectors make an audible click when you grounded them at the ECU?
your TPS and solenoid issue has nothing to do with the starting issue, just the car throwing a distraction at you. as well as your FPR disconnected, the FPR cannot keep fuel from the engine, i have never seen one rupture completely to cause zero fuel pressure and i don't even think it is possible, even the ones that leaked externally still had adequate fuel pressure. plug the FPR and the TPS back in and forget about them until the car is running again, they may not even have issues at all, like say a low battery would cause those things to tweak out.
if i actually had my true 30k posts would it give me more credibility? or do i have to continue to scrunch my face when people just move past my tips without a second thought.
renting a pressure gauge is a pain, i know, but so is running in circles for weeks doing unecessary things.
Size of e-******* has nothing to do with it, its the size of the others ego and comprehension
But, i understand where your coming from Ben, you know what your doing/saying is right, and its about all you can do
4 months later we will find out the fuel pump was bad the whole time.
if it perhaps isn't the pump, my second guess would be a corroded ground strap on top of the engine.
did your injectors make an audible click when you grounded them at the ECU?
your TPS and solenoid issue has nothing to do with the starting issue, just the car throwing a distraction at you. as well as your FPR disconnected, the FPR cannot keep fuel from the engine, i have never seen one rupture completely to cause zero fuel pressure and i don't even think it is possible, even the ones that leaked externally still had adequate fuel pressure. plug the FPR and the TPS back in and forget about them until the car is running again, they may not even have issues at all, like say a low battery would cause those things to tweak out.
if i actually had my true 30k posts would it give me more credibility? or do i have to continue to scrunch my face when people just move past my tips without a second thought.
renting a pressure gauge is a pain, i know, but so is running in circles for weeks doing unecessary things. and make sure to keep the battery fully charged when doing diagnostics.
Yes they make an audible click . I am going to check the fuel pressure when I get paid so I can rent or buy the tester . I keep the battery on a tender now .
And I checked and cleaned all ground . If I didn't have enough fuel pressure for the car to run then wouldn't just a little but of fuel get into the engine to make it try and start or would it just not be enough to over come the compression and pass thru the injector . I should be able to pick up a pressure tester tonight or tomorrow
And I also manually turned the fuel pump on so I would have steady pressure and them I manually triggered the injector to see if the psi would drop at all and it didn't
01-08-17, 01:02 PM
