Will not start

1989 FORD PROBE
200,000 MILES • 2.2L
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BILLMANLYNCH
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I replaced the fuel pump, tank filter, new plugs, wires cap, and rotor. it has about 47lbs fuel pressure. it has 12v at injector and has pulse. but still wont start. but if i spray start fluid it will run. help please.
Aug 19, 2021 at 10:36 PM
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ASEMASTER6371
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Good morning,

Your fuel pressure is too high. I posted the spec below.

You may have pressure but no volume. You need to allow some pressure from the fuel rail into a container to see if there is actual fuel in the rail.

Roy

27-40
Fuel Pressure 27-40 PSI
Aug 20, 2021 at 3:50 AM
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BILLMANLYNCH
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Well, now my Chilton repair manual say the 2.2l is supposed to have 64 to 85 PSI. so I'm low at 47 PSI. so does that mean because it's too low the injectors wont release the fuel? it's a new fuel pump. how do i increase the pressure please?
Aug 20, 2021 at 9:03 AM
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ASEMASTER6371
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I don't know where they came up with that figure. The correct pressure for both engines listed is what I posted in my first response.

We get our information from Alldata.

There is no way to increase pressure. If it is incorrect, the pump needs to be replaced.

Can you upload a snapshot of that spec for me?

Roy
Aug 20, 2021 at 10:45 AM
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BILLMANLYNCH
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Sure Chilton repair manual, but if you say it's too high how can i reduce it? and it's a new pump.
Aug 20, 2021 at 1:45 PM
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ASEMASTER6371
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The pump pressure is controlled by the pressure regulator on the fuel rail on the motor.

I attached a picture for you below of the location and how to test it.

Roy
Aug 20, 2021 at 2:34 PM
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BILLMANLYNCH
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Oh, and that's not my fuel pump. mine has 4pin plug on top not separate wires. Coming out of the lid plate.
Aug 20, 2021 at 5:00 PM
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BILLMANLYNCH
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Also, I wasn't getting power to the fuel pump. i put a 4pin relay to power the pump. yes, i replaced the fuel pump relay before i bypassed the relay.
Aug 20, 2021 at 5:03 PM
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ASEMASTER6371
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How can you have fuel pressure when there is no power to the fuel pump? Please explain?

Roy
Aug 20, 2021 at 11:06 PM
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BILLMANLYNCH
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I put a 4 pin relay. I explained that in my last message wired it up to my battery and a keyed power using 10 gauge wire.
Aug 21, 2021 at 7:24 AM
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ASEMASTER6371
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Why did you do that?

That may be the reason for the not starting.

How did you verify no power? What wires did you test?

Roy
Aug 21, 2021 at 7:36 AM
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ASEMASTER6371
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I attached the wiring diagram for you. Both powers for the relay come from the ECM.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Roy


Aug 21, 2021 at 7:51 AM
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BILLMANLYNCH
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When it comes to replace a part i can do any remove and replace but electric i'm really terrible. thanks for trying. i think i'm in over my head. what is not good is i don't make enough money to have a pro look at it and tell me why the injectors wont release the fuel and if my fuel pressure is too high why wont the injectors release the fuel.
Aug 21, 2021 at 9:02 AM
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ASEMASTER6371
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I don't believe the ECM is grounding the injectors and allowing them to pass fuel.

Roy
Aug 21, 2021 at 9:06 AM
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BILLMANLYNCH
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It has 12v when you turn the key on and when you hook up the test light to positive and crank you have pulse. doesn't that mean it's getting proper signal?
Aug 21, 2021 at 10:27 AM
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ASEMASTER6371
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Not on the positive side. The negative side is what pulses. One wire has constant 12 volts. The other wire goes to the ECM for grounding.

Roy
Aug 21, 2021 at 12:49 PM
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BILLMANLYNCH
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So you're saying the same wire that has the constant 12v is the same that pulses when i put my light tester to the positive side the other side is ground from the ECM. so how can i check to see if the ECM is sending ground to the injector please?
Aug 22, 2021 at 8:32 AM
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BILLMANLYNCH
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If i have a bad oil pressure switch could that stop it from running if i put a bypass fuel pump relay and my pump turns on shouldn't it run? i only bypassed the relay. please and thank you for your patience. my fuel pump relay doesn't have any numbers on it it's a 5 pin relay. when i pull it out and turn the key on only the center pin is getting 12v where the relay. Is plugged in.
Aug 22, 2021 at 9:49 AM
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BILLMANLYNCH
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Or could the low oil sensor stop it from running? it has new oil and it's full but on the readout above the mirror it says low oil has a red light arrow so does the coolant but both are full and the other lights are orange up there.
Aug 22, 2021 at 12:08 PM
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ASEMASTER6371
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No, the positive side is a constant voltage sent to many sensors. The other side of the other wire is the one you test for pulsating when the engine cranks or is running.

There is only 1 positive side. The other side shows voltage until the wire is grounded. Then it should show 0 volts.

Roy
Aug 22, 2021 at 1:13 PM
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BILLMANLYNCH
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Well, i fixed the fuel pump issue and removed my relay but the car wont start still. doesn't the fuel pressure regulator control how much PSI is let in? The injectors are getting control signal if it wasn't would the test light still blink or pulse? would the low oil light keep it from running? it's not low and to pull codes i have to jumper 2 wires or ground 1. please help, i'm just frustrated. i know your trying to help. please and thank you.
Aug 23, 2021 at 4:38 PM
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ASEMASTER6371
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Did you test to see if there is an actual fuel in the lines? As I stated before you can have pressure without volume.

Roy
Aug 23, 2021 at 4:43 PM
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BILLMANLYNCH
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I guess you don't want to help me anymore.
Aug 25, 2021 at 12:01 PM
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ASEMASTER6371
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I gave you a suggestion in my last response. What did you not understand?

Roy
Aug 25, 2021 at 12:23 PM
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KASEKENNY
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Just to jump in on this. Were you able to confirm that even though the injectors are pulsing that you have fuel in the cylinders?

Just reading through this, we are missing something because if you have 47 PSI and injector pulse then we should have fuel in the cylinders. However, if you are using starter fluid and it starts then we have no fuel in the cylinder.

Basically I would crank the engine for about 20 seconds and then pull a plug and see if you smell fuel, see if it is wet.

However, I highly suspect that we missed something on this either in how it was tested or made an assumption somewhere.
Aug 25, 2021 at 6:32 PM
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BILLMANLYNCH
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Thank you. how i tested the injectors first i unplugged 1 took my test light 1 end ground put the key in turned on ignition both thermals had power then i took the ground off put on the positive side battery tested the control wire had my friend crank and the light tester blinked or flashed or pulsed. my Chilton book said i am supposed to have 64 to 80 PSI fuel mine is 2.2l turbo on the 3.0l engines is 30 to 40, but i'm not getting 60. will the injectors release fuel if the pressure is too low? then is that the fault of the pressure regulator? please and thank you for helping me.
Aug 26, 2021 at 1:33 PM
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KASEKENNY
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I think we are at a stalemate because we keep covering the same info over and over.

We show that the 2.2L SOHC turbo engine has a pressure spec of 27-40 PSI.

I understand your manual shows something different and I can't explain why that is. Below is a screen shot from AllData and Mitchell says the same thing.

So the facts remain that you are able to start the engine on starter fluid so you have a fuel delivery issue.

I asked you to do a couple of things and Roy has asked things as well but not seeming to get that info back. If we are not going to make progress on these things then I am not sure we are going to be of any help to you.

Thanks
Aug 26, 2021 at 6:08 PM
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BILLMANLYNCH
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So your saying because the fuel pressure is to hi the injectors wont open and release the fuel, but doesn't the fuel pressure regulator control how much pressure it lets in so how can i fix the pressure and reduce it.
Aug 29, 2021 at 1:29 PM
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BILLMANLYNCH
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There is fuel in the fuel rail, there is no fuel in the cylinder's.
Aug 29, 2021 at 1:31 PM
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ASEMASTER6371
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You cannot reduce the pressure. It is not adjustable at all. We already talked about the regulator controlling that.

If you have injector pulse, as you say, and pressure but no fuel in the cylinders, it only leaves the injectors. It is hard to believe that all of them are clogged. Usually only one is an issue.

https://www.2carpros.com/articles/how-to-replace-a-fuel-injector

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

Roy
Aug 29, 2021 at 1:38 PM