99 L engine just quit
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99 L engine just quit
’99 L everything stock. A while back had a coilpac go bad and replaced it. Truck has 79k miles on it and the other day I’m driving in city traffic and the engine just shut off. No indication, no nothing, just quit.
Lucky to pull into some shade and the engine would crank for about 2 seconds and quit. It’s like as soon as it starts it shuts off. So I go under the hood and pulled the throttle linkage back and forth while the wife turned the starter over. Nothing. Then, I guess it’s the choke cable on the bottom which runs to some box on the driver side fender well was not moving, so I manually pushed the cable back and forth. The truck then started and ran fine. Now, I am totally unaware of what happened. It seemed like it wanted to quit again the other day and balked but patting the accelerator, it kept running and went along like nothing happened. Now I’m worried it will just quit in a bad place and time.
Anyone ever have anything like that happen and if so what was the problem. Also I tried to find a diagram of the throttle body and assembly so I can figure out what that bottom cable goes to (I assume its choke or idle control). I’m just stumped, as now the engine has started missing and I think it’s another COP gone bad but no engine code yet. I don’t think the engine miss is related to the original problem and is a COP. Will put a reader on it today and see if there are any pending codes.
Lucky to pull into some shade and the engine would crank for about 2 seconds and quit. It’s like as soon as it starts it shuts off. So I go under the hood and pulled the throttle linkage back and forth while the wife turned the starter over. Nothing. Then, I guess it’s the choke cable on the bottom which runs to some box on the driver side fender well was not moving, so I manually pushed the cable back and forth. The truck then started and ran fine. Now, I am totally unaware of what happened. It seemed like it wanted to quit again the other day and balked but patting the accelerator, it kept running and went along like nothing happened. Now I’m worried it will just quit in a bad place and time.
Anyone ever have anything like that happen and if so what was the problem. Also I tried to find a diagram of the throttle body and assembly so I can figure out what that bottom cable goes to (I assume its choke or idle control). I’m just stumped, as now the engine has started missing and I think it’s another COP gone bad but no engine code yet. I don’t think the engine miss is related to the original problem and is a COP. Will put a reader on it today and see if there are any pending codes.
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Thanks for the info. I just noticed the factory recall mod on the thing. Just not thinking. May be a coincidence the thing started running again when I monkeyed with it. Still can't figure why the thing just shut off like that. It would not run at all until I jiggled the cruise control cable. Then it started and has run ever since. (about two months ago)
Far as the missing goes, looks like I got to change the #4 COP again. Just put a new on #4 about a year ago and the 'puter says first random missfire P0300 and then page two says #4 P0304 so I guess it's coming from that. I just as soon get flogged as to go after that thing again but have no choice.
May as well get to all the plugs since I am going to spend the morning stoved up in the engine compartment. Thinking bout the NGK T6. Any thoughts about those plugs. The truck is all stock and the temp here is always over 100 in the summer and never much below 50 in the winter.
Far as the missing goes, looks like I got to change the #4 COP again. Just put a new on #4 about a year ago and the 'puter says first random missfire P0300 and then page two says #4 P0304 so I guess it's coming from that. I just as soon get flogged as to go after that thing again but have no choice.
May as well get to all the plugs since I am going to spend the morning stoved up in the engine compartment. Thinking bout the NGK T6. Any thoughts about those plugs. The truck is all stock and the temp here is always over 100 in the summer and never much below 50 in the winter.
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Well, the 'puter don't lie ........LOL
With the p304 I changed the #4 COP and put in a new plug and all's well now.
Just interesting to note. This is my daily driver and I have not done anything to beef it up even though I have been involved in super late model racing for about 45 years. Our dyno guy was a Lightning nut and has some pretty fast trucks in his day. If I find one messed up I can practically steal maybe I will some day turn up the heat and build a killer truck but I have found that anytime you monkey too much with any of the factory stuff you risk problems, and that's Okay because that's half the fun. Anyway I reluctantly put in a new plug on the #4 simply because this is the second COP failure in 18 months on that hole. The new addition to an otherwise factory truck is a Motorcraft 12FM1 plug. Believe it or not I still have the original plugs from the factory, the 12E. The have 71,000 miles on them and all I do is pull them and run 'em through my plug cleaner. Growing up we could not afford to change plugs often and I have a bag with fine grit which hooks to my compressor and will clean the snot out of a plug making it look brand new. None of the plugs have any sign of burning or otherwise eating themselves up I am reluctantly going to pull the rest and replace them with the 12FM1's just to see if there is any difference I can feel in power and throttle response.
The 12E I understand is no longer made and probe is much beefer which makes the 12FM look fragile. Also when the 12FM replaced the 12E I heard of some popping engines as they had a tendency to self destruct when serious juice was applied. That's been a while ago and I don't stress this engine much anyway so, they should present no problem.
This is a great site as is NLOC for knowledge about the lightning. Lots of talent here and my personal thanks for sharing that talent. It makes me want to go work on my truck. LOL.
With the p304 I changed the #4 COP and put in a new plug and all's well now.
Just interesting to note. This is my daily driver and I have not done anything to beef it up even though I have been involved in super late model racing for about 45 years. Our dyno guy was a Lightning nut and has some pretty fast trucks in his day. If I find one messed up I can practically steal maybe I will some day turn up the heat and build a killer truck but I have found that anytime you monkey too much with any of the factory stuff you risk problems, and that's Okay because that's half the fun. Anyway I reluctantly put in a new plug on the #4 simply because this is the second COP failure in 18 months on that hole. The new addition to an otherwise factory truck is a Motorcraft 12FM1 plug. Believe it or not I still have the original plugs from the factory, the 12E. The have 71,000 miles on them and all I do is pull them and run 'em through my plug cleaner. Growing up we could not afford to change plugs often and I have a bag with fine grit which hooks to my compressor and will clean the snot out of a plug making it look brand new. None of the plugs have any sign of burning or otherwise eating themselves up I am reluctantly going to pull the rest and replace them with the 12FM1's just to see if there is any difference I can feel in power and throttle response.
The 12E I understand is no longer made and probe is much beefer which makes the 12FM look fragile. Also when the 12FM replaced the 12E I heard of some popping engines as they had a tendency to self destruct when serious juice was applied. That's been a while ago and I don't stress this engine much anyway so, they should present no problem.
This is a great site as is NLOC for knowledge about the lightning. Lots of talent here and my personal thanks for sharing that talent. It makes me want to go work on my truck. LOL.
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