Question about 1989 Ford F 150

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My 1989 ford f150 is cutting out like its not getting enough fuel.I have replaced the fuel filter, gave it a full tune up and I cannot figure it out for the life of me. please help.

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If its the 1989 f150 fuel enjection its probley the fuel grade your runing mine bog downs when i run low test you prob need to try high test with no ethnoal

Posted on Feb 19, 2013

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Check fuel pressure see if the pump is bad,if pressure is good around 30-35psi,then it could be maf sensor.










TIM..........

Posted on Oct 23, 2010

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I have ford f150 1989 4speed manual 5.0. It's jerks I can't fix it. I have put 2 new fuel pumps,did the whole tuneup, new tps censor, new erg valve, new ignition coil,and it's still jerks.


Did you check the fuel pump pressure before and after the pumps ?
You'll have to figureout if it is a fuel or ignition problem.Isthe check engine light on ?
Usually a "jerking" engine is an ignition problem.
You have a distributor and an ignition module that could be the problem too.

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Sounds like a weak fuel pump.So i would check the fuel pressure first it should be 50-60 psi with key on and engine off and 45-60 psi with engine running.If its not within these specs replace the pump and filter.

Aug 04, 2011 | 1989 Ford F 150

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I was going down the rd and my truck 1989 ford f150 just cut off on me and wont start bak...it is getting fire, its getting gas, its got compression, the engine turns over fine, but it wont crank up and...


Sounds like your approach has not been successful
because you change things in hope of a solution

You have to gather the facts based on what it does
or doesn't do,then do some testing on what does work
As your proceeding you will eventually find something
that isn't right. Maybe the fuel pump etc.

I don't mean to be negative toward you in any way,but
you need a good understanding of the basics and the
ability to use a volt meter etc.

When you say you have spark,gas etc,you may well have
But is it weak spark,is it correctly timed,is fuel pressure
correct.

For the future---forget the tune-up and spark plug thing
You could throw away one or two plugs and it would start

Mar 01, 2011 | 1989 Ford F 150

1 Answer

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have you change fuel filter ? check lines to make sure they arenot blocked..is pump working ,can hear it run ? do have enough fuel in it

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I have low fuel pressure when you put a load on it and it wants to backfire and bog down on a ford f150


Try replacing your fuel filter, it may be constricted. Do a tune up if you haven't done a tune up in a while. check your spark plug wires to make sure they're not arcing(do this at night with no light), start her up and see if the wires are not arcing current to the engine block, if so replace.

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1 Answer

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