While im driving down the road the engine will die
Sometimes it wont happen for days.then sometimes it will happen a few times a day.and most of the time when i turn my heater on it does it also.once it dies i have to pull over and wait a few minutes then it will crank up and go just fine.Also sometimes when you get in it to crank it up it wont even turn over so you have to wait 5 minutes then itll fire up
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I have 94 s 10..4.3 v6. it does the same thing have replaced fuel pump and filter,ignition module,cap rotor plugs wires,coil,ground strap...driving down the road jus dies like the key got shut off....for a while when troubleshooting through the parts you could get it to restart.....now when it dies it cranks really hard when trying to restart..ive checked the timeing its fine....if i wait a few min it will usually start...sometimes it will show a check engine light sometimes not......never know when it will happen sometimes jus down the the road from the house sometimes 100miles down the road......sometimes three times in a mile sometimes not for weeks at a time..Wtf...Im ready to shoot it like a lame horse....its a shame too its a sharp lil truck thats a two owner and never spent a night outside in its life...i knew the original owner ...i bought it with 90,000 on it it only has 148,000 now and still looks like new...
Check the crankshaft position sensor. Old oil (infrequently changed) can foul them up. The sensor has to "see" certain points on the crankshaft. Dirty or bad oil can prevent the "seeing" from occuring. You can turn the key all you want, it will crank but never start. Sometimes, when the sludge settles, it will run again. If this solves your problem, you seriously need an engine flush and then frequently change your oil. Clean oil is more importaint than most people realize. hope this helps.