1989 FORD MUSTANG
89,000 MILES
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I've replaced fuel tank,pump,sending unit,tcm mod on distrub. I've tested relays, replace ignition sw, and ket switch. And still can't keep my Stang running. It will run if you turn the key and spray down the trottle body, or if you turn the ket and remove the starter wire from the relay ( you must hold the ket forward ).
these are the only 2 ways to keep it running, why ?
Apr 9, 2013 at 5:22 PM
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SATURNTECH9
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Do you have a multi meter to check powers and grounds?Have you checked the actual fuel pressure?Also checked for injector pulse?
Apr 9, 2013 at 6:55 PM
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MILKMAN375
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yes I checked fuel pressure, no i did not check injector pulse. I just borrowed the injector pulse kit and will try that. also I do have a multi meter... what did you have in mind ?
Apr 9, 2013 at 7:11 PM
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HMAC300
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one other thing to add, check to see if your inertia switch for fuel is engaged it in the trunk on the wheel well
Apr 9, 2013 at 8:00 PM
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MILKMAN375
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inertia switch is working fine
Apr 9, 2013 at 8:02 PM
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SATURNTECH9
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So what was your fuel pressure reading?
Apr 10, 2013 at 4:03 AM
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HMAC300
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does this have an anti theftdevice installed on it?is it a diode key? if that is engaged you wont' start or run what you weem to be doing is jumping it.
Apr 10, 2013 at 1:54 PM
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MILKMAN375
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If i remember correctly fuel pressure was 38lbs.

I also replaced the fuel relay and eec power relay, now it doesn't want to start at all. and i lost pressure on my fuel rail.

Can you provide me with a scamadic of the grounds for the fuel and ignition systems ?
Apr 10, 2013 at 4:09 PM
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MILKMAN375
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i don't see any aftmkt anti-theft devices. and I have already replaced key and keyclyn.& ignition switch.
Apr 10, 2013 at 4:15 PM
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HMAC300
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you have a pressure /pump problem if you dont' have any pressure at the rail. the relay grounds through the pump so follow the black lead form pump it will probably be on frame someplace there, the ignition grounds through pcm and it doesn't show an exact place. so check by pcm. check the fusible links in pic that i'm sending youmay have one or several that re burnt up that will effect your starting running if they are as you can see in pic there are couple that go to fuel. they are available at auto parts.
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Apr 10, 2013 at 4:32 PM