1997 f150 v6 after running for 20 min. you shut the truck down it wont start back up and it seems to start after it cools down.relaced the coil pac and does the same
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Sounds like your ignition module it is common on fords to do this when its cool it will start and run fine but once it heats up the truck dies until you let it cool down again and then your up and running till it heats up again. Some modules are mounted on the fender others are mounted with the distributor have it checked and let me know how it went.
To clarify, you said it runs for 20 min then quits, and it won't start again until it cools off. Have you checked for spark at the plugs and fuel pressure right after it quits running ? These models have an ignition module attached to the side of the distributor that has a history of failing when hot. The coil and the pickup inside the distributor can fail too. Could also be a relay.
The valves may need to be adjusted, sounds as if one has become a little loose. If not, one of the valves may be sticking. I would drain about 1 1/2 quarts of oil from the engine, put in a engine cleaner and run for about 5 min then drain all the oil. You may have to do this only once, but if the valve is sticking badly it may take another cleaning. It will cost a little to clean the engine $20 or so but not as much paying someone to break it down to do the same thing. Good Luck.
sounds like a bad alternator. if the starter wont engage it means the battery is low. the only way the battery gets low is when the alternator doesnt work.
tow to shop most likely - - take down the vin number and call the local dealer and ask for any recalls - also - if ur behind on payments many new companies have locks on their vehicles and shut them down for getting later - - just saying it happens
Could be a bad coil. Sometimes when a 'bad' coil heats up it will fail to work properly. When it fails and shuts the vehicle off, this gives it time to cool back down and resume proper operation. Does it run at normal highway speed during that 20 minutes? If not then it could be a clogged fuel filter. A clogged fuel filter will let the vehicle run at idle but will starve the engine at higher rpm's.
You will need to do your testing while the vehicle is in failure to start mode.Check wether the coil is recieving 12v and pour a little fuel down carb to see if it wants to run.If pouring a little fuel down carb makes the car try to fire up you probably have a fuel pump issue.If it doesnt try to fire you have an ignition problem.Hope you get it sorted and good luck.
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