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1995 F-150 pick-up shuts off
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rlcjr
New User
Oct 30, 2009, 6:40 PM
Post #1 of 3
(3065 views)
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1995 F-150 pick-up shuts off
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I have a 1995 F150 pickup with a 302 automatic transmission that will just shut off when when it wants to. Sometimes it will run great for a week/month, then it may shut off 3 times a day and usually in the middle of traffic. Have done a compression check, fuel pump pressure check, replaced fuel filter, replaced ignition module, checked for water in fuel, put on engine anylizer (3-times) and each time they said "everything is working properly, that will be $85.00", checked for cracked fuel lines, washed and waxed it,adjusted my seat, held my mouth right, AND STILL it wil shut off when IT wants to. My friend had this problem with her 1995 explorer and had it at the dealer ship a dozen times and finally traded it, because they couldn't find the problem. I like this truck and do not want to trade it in. Has anyone out here had this problem and was able to fix it????
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 30, 2009, 6:45 PM
Post #2 of 3
(3060 views)
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Re: 1995 F-150 pick-up shuts off
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All "crank, no start" conditions are approached in the same way. Every engine requires certain functions to be able to run. Some of these functions rely on specific components to work and some components are part of more than one function so it is important to see the whole picture to be able to conclude anything about what may have failed. Also, these functions can ONLY be test during the failure. Any other time and they will simply test good because the problem isn't present at the moment.
If you approach this in any other way, you are merely guessing and that only serves to replace unnecessary parts and wastes money.
Every engine requires spark, fuel and compression to run. That's what we have to look for.
These are the basics that need to be tested and will give us the info required to isolate a cause.
1) Test for spark at the plug end of the wire using a spark tester. If none found, check for power supply on the + terminal of the coil with the key on.
2) Test for injector pulse using a small bulb called a noid light. If none found, check for power supply at one side of the injector with the key on.
3) Use a fuel pressure gauge to test for correct fuel pressure, also noticing if the pressure holds when key is shut off.
4) If all other tests are passed. then perform a complete compression test and record the results. All cylinders should be over 120lbs in most cases and all be within 10% of each other.
Once you have determined which of these functions has dropped out,
you will know which system is having the problem.
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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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Loren Champlain Sr
Veteran
/ Moderator
Oct 30, 2009, 6:45 PM
Post #3 of 3
(3057 views)
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Re: 1995 F-150 pick-up shuts off
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ricjr; The problem with a symptom like this, you are going to have to diagnose it at the time it happens. You are obviously losing fuel or ignition. Just a wild guess, but the pickup coils in these distributors will get hot and 'break down', causing the engine to die. After a few minutes of 'cool down', they'll restart an be fine. But, as I said, this is just a guess. The next time it does it, check for spark at the plugs.
Loren
SW Washington
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