1990 F-150 5.0 sputtering problem
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6th Gear
Joined: Jun 2024
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From: Canada
1990 F-150 5.0 sputtering problem
Hi there I have a 90 F150 5.0 302 With roughly 203,000 kms I’ve been driving it for 4 months and usually have this intermittent stutter under light throttle that never bothered me but recently it’s been sputtering and bucking horribly almost can’t drive I threw coolant in it and the sputtering almost completely went away I drove it to a windshield repair shop this morning and upon the second start up the truck would not idle we had to push it into the shop just kept cutting out sputtering and bucking I have no idea put new fuel filter running injector clean gas tank anti freeze and premium fuel new plugs wires Distributer cap and Distributer rotor put in when I first got the truck at 197,000 kms if any one has any idea anything helps it seems like it likes coolant
Fleet Mechanic
Joined: Nov 2022
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Your engine should run regardless of coolant level, of course this will wear out the water pump if it's too low, but it will run. Is it overheating? Any codes? Any smoke? Any visible leaks? What's the condition of the oil?
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6th Gear
Joined: Jun 2024
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From: Canada
So for codes wise I had a map sensor code when I first bought it replaced it and ever since then I’ve had a check engine light that will come on at random times and sometimes it will come on, and if I start it up some mornings it will come on and make trans shift hard just turn it off and it goes away I haven’t been able to check the check engine because the engine light goes out at ransom times most times if I do come to a stop as for smoke and over heating no smoke comes out unless it’s cold of course than it puffs a little white goes away when warm same as all cars and then it never overheats on me ever oil is in good condition still golden brown looks new I do see a little coolant at what looks to be the temp sensor it’s located right at the top of the water pump it has had a new water pump put in at around 150,000 km so I don’t think it’s the water pump but it does look like a little temp sensor
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6th Gear
Joined: Jun 2024
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From: Canada
so it came up nothing with Key on engine off test and the key on engine on test came up with a 98 I believe the code was and then the truck would stall before any other codes were shown but I think that it was the only one
Fleet Mechanic
Joined: Nov 2022
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When you say "nothing" do you mean code 11?
Code 98: Did not pass KOEO yet (Get 11 in KOEO first) Transmission EPC circuit/solenoid failure – Transmissions
I am not too well versed on the automatics, so I couldn't tell you what to do with this, other than test the EPC. Perhaps someone who knows more about this can chime in.
Code 98: Did not pass KOEO yet (Get 11 in KOEO first) Transmission EPC circuit/solenoid failure – Transmissions
I am not too well versed on the automatics, so I couldn't tell you what to do with this, other than test the EPC. Perhaps someone who knows more about this can chime in.
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6th Gear
Joined: Jun 2024
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From: Canada
When you say "nothing" do you mean code 11?
Code 98: Did not pass KOEO yet (Get 11 in KOEO first) Transmission EPC circuit/solenoid failure – Transmissions
I am not too well versed on the automatics, so I couldn't tell you what to do with this, other than test the EPC. Perhaps someone who knows more about this can chime in.
Code 98: Did not pass KOEO yet (Get 11 in KOEO first) Transmission EPC circuit/solenoid failure – Transmissions
I am not too well versed on the automatics, so I couldn't tell you what to do with this, other than test the EPC. Perhaps someone who knows more about this can chime in.
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6th Gear
Joined: Jun 2024
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From: Canada
I’m gonna try and throw a fuel pump into the rear tank since my front tank leaks and see if it changes anything since the issue started very intermittently after I ran low on fuel I’ll let you know how It goes
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From: Mojave, Ca
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