Fuel issues. Please help!! | Ford Escort Owners Association (FEOA)
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Fuel issues. Please help!!

Discussion in '1st Gen 1981-1990 CVH' started by 88 escort GT, Jan 15, 2020.

  1. 88 escort GT

    88 escort GT FEOA Member

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    I have a 1988 escort gt. My issue is that every so often it will crank over but not start. When it does this I’m not hearing the fuel pump energize. After turning the switch back and forth several times, I’ll hear the pump energize then it cranks. Initially, the car never cut off once started so I replaced the fuel pump relay but it still had the no start no fuel pump energizing problem every so often but now the car actually shuts off after running about five minutes and will not start back up until I turn the switch off and on several times after which I hear the fuel pump energize. I replaced the fuel pump about 6 months ago, I replaced the fuel pump relay a week ago and I also tried disconnecting the fuel pump shut off switch and bypassed it with a jumper wire. Still the same issue. Any idea as to why the fuel pump will not energize every time and what would stop it from randomly receiving power? Thanks
    Last edited: Jan 15, 2020
  2. marclar

    marclar Moderator Staff Member

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    well you need to test and find what/where is loosing power. i would start by putting a meter on the FP relay and checking for power when it is not working, then go from there. other possible cause would be ignition switch.
    88 escort GT likes this.
  3. 88 escort GT

    88 escort GT FEOA Member

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    Thanks, i'll give this a try in a few days. I may just change the switch then go from there. I'll post the outcome. In the meantime, does anyone else have any ideas? Thanks.
  4. 88 escort GT

    88 escort GT FEOA Member

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    Well I tried replacing the ignition switch and the computer relay. Still no luck. The fuel pump is less than a year old but I’m thinking that it may be the issue. Any recommendations on where I can get a durable fuel pump. This last one came from advance. Thanks.
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  5. Krankie

    Krankie FEOA Member

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    You need to diagnose rather than just swap parts. As was previously mentioned... do some testing to see where the power is being lost and after that you'll have an idea of where to look
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  6. 88 escort GT

    88 escort GT FEOA Member

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    The car has been cranking and running good for the past few days now its doing the same thing. Every so often the fuel pump does not energize but with all I’ve replaced, I’m not sure of what to check next.
  7. 88 escort GT

    88 escort GT FEOA Member

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    Hi, does anyone have any ideas?
  8. FordMan59

    FordMan59 FEOA Member

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    If you hadn't already bypassed it I'd say it's the inertia switch. When I first got my '88 Pony most of the time when you'd get in it it would start just fine but let the temperature drop down pretty cool and it wouldn't start until the sun got on the car and it warmed up. One morning when it wouldn't start I checked the inertia switch and just putting my hand on it to check the button warmed it enough that the car started. The button wasn't tripped so I went to a junk yard and bought an inertia switch for $5. and never had the problem again. Ford had problems quite often in the '80's with bad inertia switches.

    You might also check the wiring harness where it plugs into the fuel pump relay. When my dad had the '94 I have now it quit on him on the road one day and wouldn't restart. He had it towed home and what we found was one of the wires going to the fuel pump relay had overheated and burned. It still appeared to be intact but when we went to unplug the fuel pump relay it came loose in our hand.
    Last edited: Feb 16, 2020
    88 escort GT, Pyoro and denisond3 like this.
  9. 88 escort GT

    88 escort GT FEOA Member

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  10. 88 escort GT

    88 escort GT FEOA Member

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    Thanks. I’ll look at both of those things. Just wondering though, what else would make the fuel pump energize sometimes and sometimes it doesn’t. On top of that, when it does energize the car will run fine for a long time, then sometimes it’ll run for five minutes and shut off like it’s out of gas. The fuel pump does not energize when I try to start it back up but if I wait a while and after I try to start the car several times I’ll eventually hear the fuel pump energize and it’ll crank up. Real strange.
  11. FordMan59

    FordMan59 FEOA Member

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    About all I can think of to keep the fuel pump from energizing is the fuel pump relay, fuel pump, inertia switch or a bad connection somewhere in the wiring. When I was having problems with the Pony it ran fine except for times when I'd go out and it wouldn't start. It would sit and crank all day long it just wasn't getting any fuel therefore it wouldn't start. Once the sun got on the car and it warmed the inertia switch it would start right up and run like there had never been a problem. Several Ford models had problems with these switches back in the '80's. I assume all the '80's model Fords used the same switch. If you find out it's the inertia switch and you can't find one locally let me know and I'll sell you the one off my Pony since I'm not driving it anymore. Actually I turned in the title to it awhile back so I wouldn't have to pay property taxes on it every year so it's never going back on the road.
    88 escort GT likes this.
  12. 88 escort GT

    88 escort GT FEOA Member

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    Th
    Thanks. i'll try bypassing the switch again. When I did this before I disconnected the the inertia switch and ran a jumper wire between the two wires on the harness. Not sure of if this is right but i'll try it again. We're getting a lot of rain so it might be a few days before I can try it again. I'll let you know if it makes a difference though.

    On another subject. My passenger side rear taillight is cracked. Is the one on your pony good?
  13. FordMan59

    FordMan59 FEOA Member

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    Did the standard Escort and the GT use the same tail light? If they did I'll check the one on my Pony. Looking at pictures on the web they look to be the same but, please confirm before we make a deal. I don't think there was anything wrong with the one on my Pony but I'd have to double check and let you know. I know I have an extra tail light here that is good but, if memory serves me correct it's a left hand light.

    I think you were correct in the way you tested the inertia switch by just running a jumper wire around the switch if you had a good connection.
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  14. 88 escort GT

    88 escort GT FEOA Member

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    When you have a chance, can you send me a picture of your tail light? Thanks.
  15. 89FordEscort

    89FordEscort FEOA Member

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    In my case the fuel line that runs from the fuel pump and into the pickup tube inside the fuel sender unit was busted and fuel was gushing out of that line and back into the tank. That might not be your problem but I wanted to mention it that it does happen.
    88 escort GT likes this.
  16. FordMan59

    FordMan59 FEOA Member

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    I can never think to look at the tail light to see what it's condition is when I'm out but will try to remember and let you know.
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  17. 88 escort GT

    88 escort GT FEOA Member

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    I replaced the the AirTek fuel pump with a Delphi pump today. It seems to have fixed the problem.

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