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1994 Ford F-150 After engine gets hot truck shuts off.
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autumn59
New User
Aug 13, 2017, 2:04 PM
Post #1 of 2
(1177 views)
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1994 Ford F-150 After engine gets hot truck shuts off.
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We changed 17 year old battery. Truck started feeling like it didn't have a whole lot of power. Put a new 75 amp alternator in it. Driving down the road after about 10 minutes it felt like truck lost power. Pushing on the gas it would only go about 35mph. After letting up on gas a little it went up to about 45 mph. Fifteen minutes later when pulling in driveway it completely shut off. Put in a new solenoid. Truck ran fine for a few quick trips to the store. During these times we turned the air conditioner off. No change in performance. Then a few days later on a longer trip the truck lost power again and this time shut off every time we slowed down to make a turn. Put old solenoid back in. Tried to find a 130 amp alternator but could not find one. On two of these occasions the battery and engine lights came on. Tried truck in driveway and let idle. Alternator arrow stayed up slightly even when air compressor was on. When we turned the fan on the arrow went way down and eventually turned off. Replaced ac fan motor. Seemed ti improve but then again the same problem,. Put in new starter. Same problems. Alternator needle stays slightly up and then when motor gets hot it goes down and then cuts off. Also when driving a few times the truck felt like it was shaking and sputtering. We did a manual code check. It showed code 539 and 625. Looked it up and it mentioned transmission. The transmission used to kick in hard but now it seems to have smoothed out. After all this it seems what is happening is the truck cuts off once it gets hot. One more detail is that this truck sat for 10 years before we put it back on the road. Any help will be appreciated. Forgot to mention that we replaced the battery wire connector on the alternator as the other one seemed to have melted.
(This post was edited by autumn59 on Aug 13, 2017, 2:10 PM)
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Hammer Time
Ultimate Carjunky
/ Moderator
Aug 13, 2017, 3:54 PM
Post #2 of 2
(1158 views)
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Re: 1994 Ford F-150 After engine gets hot truck shuts off.
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I hear you talking about changing a whole bunch of parts without one ounce of testing.
You start out by testing your battery and once you have a confirmed good battery, you have the charging system tested.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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