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Discussion Starter · #1 ·
I am having a problem with my injector on an 89 1.9.

The injector works if you hook it to a 12 volt sorce, it sprays fine. With the injector unhooked at the clip using a fluke meter it reads that it has power of around 5.28 volts, hooked up to the injector it has about .37 volts.

The problem is the power to the injector does not pulse like it should, if I have a meter hooked up to it and have somebody try to start the car the voltage to the injector does not change at all.

Can somebody fill me in on whats going on here, or could somebody tell me what is supposed to trigger the injector to make it open?
 

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Discussion Starter · #3 ·
Jeffescortlx said:
Will the car run if you manualy feed it fuel?

If not, you might just have a broken timing belt.
Yes the car runs fine if you manually give it gas. Everything is mechanically sound. It ran fine one day and the next day it just didnt.
 

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i had a similar problem with my first genmine wound up being the control modular its under your distibuter.id check that over pretty well everything goes throught it ford had massive problems with them .if it is it look into getting the one from holly.i need something other that stock for my car anyways but if your car is primarily stock just go to the parts store and remember to pickup some dielectric grease if the piece heats up again forget about its shot for a little part it can reack havock
 

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Discussion Starter · #7 ·
JoeT said:
i had a similar problem with my first genmine wound up being the control modular its under your distibuter.id check that over pretty well everything goes throught it ford had massive problems with them .if it is it look into getting the one from holly.i need something other that stock for my car anyways but if your car is primarily stock just go to the parts store and remember to pickup some dielectric grease if the piece heats up again forget about its shot for a little part it can reack havock
When the ignition control module (ICM) goes out then you usually loose spark. This is a fule related problem. The car runs just fine if you manually give it fuel. Thanks for the input though.
 

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re

on a ford the icm also controls the fulenot just spark alon .on and escort the icm is also the crank triggerwhich will send out your pulse.thats from what i can recall on that car.
 

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I had the same "no fuel injector signal" problem also, with a 88lx or somting like that first gen durby car.
The car ran, then after it was stripped of every thing not needed to prepare for the durby it did'nt run. After going over the computer wireing and checking for codes and going no where I hooked up a controller that my work manufactures to the injector and TPS sensor, it's a 12 volt PWM controller. It was basicly like having a electronic carborator, once it was fine tunned the car ran good enough to durby.
 

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That's a lot of work just to run an injector. PWM is by no means a cheap method of control either. We buy PWM modules where I work for hydraulic controls and it is very expensive. Good thing you got a deal :wink:

Matt 8)
 

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Discussion Starter · #12 ·
Re: re

JoeT said:
on a ford the icm also controls the fulenot just spark alon .on and escort the icm is also the crank triggerwhich will send out your pulse.thats from what i can recall on that car.
I have never heard of such a thing, that is the ICM having anything to do with the noid.

Can anybody on here confirm this? It was always my understanding that the ICM just mainly controlled just the spark.

It would be nice if it was something as simple as just replacing the ICM.
 

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Discussion Starter · #13 ·
Ok going off of what some people suggested here, I went ahead and pulled the ICM out and went to the parts store. I bought it brought it home, put it in and the problem is still not cured. Moral of the story is I wasted $30 some bucks on something that I didnt need.

Any more suggestions people? I need this thing to run the city is on my back about it sitting and they gave me another week to get it running or there going to fine me. If I dont get it running though I'll make sure to get some pictures of it while getting crushed at the scrap yard :D
 

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I don't know the 1st gen worth a damn, but from your original post (if I understand what you wrote correctly), it sounds to me like this is a wiring problem. Can you trace the injector wiring back to a connector, disconnect it and check for continuity going both ways? Apply 12 volts back at the nearest connector to the injector and see if you still get spray.
 

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Discussion Starter · #16 ·
escortlx96 said:
have you checked the fuel pump relay,or any other fuel system relays?
Yes, the fuel pump runs fine and it has good pressure. If I hook the injector straight to a 12 volt sorce it sprays fuel just fine. The fuel pump is brand new and works fine.
 

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Discussion Starter · #17 ·
highanddry said:
I don't know the 1st gen worth a damn, but from your original post (if I understand what you wrote correctly), it sounds to me like this is a wiring problem. Can you trace the injector wiring back to a connector, disconnect it and check for continuity going both ways? Apply 12 volts back at the nearest connector to the injector and see if you still get spray.
Thanks for the input, I believe that the continuity of the wire is just fine, if it wasnt then I wouldnt be able to read the voltage coming out of the wire with my Fluke meter at the injector.

Thanks for all the help so far everyone. I know somebody on here has to know whats going on....... keep the suggestions coming 8)
 

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Sorry, I wasn't clear enough. Perhaps the resistivity is too high due to some damaged wires. I'd try applying 12 V back at the nearest connector and keep going back from there, if you can trace the wires. A simple voltage check only needs one strand to be continuous.
 
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