My truck was doing the same thing.... replaced the crankshaft sensor first, truck would still die after about 10 minutes of idleing, it back-fired thru the engine and blew off the back of the intake manifold. Pulled the monifold, reglued end-cap and put back in truck. STILL died after idleing for 10 minutes. Code PO320 kept coming up ( crankshaft sensor) researched it and found a bad camshaft sensor can cause crankshaft sensor to act up and give code for the crankshaft sensor. Replaced camshaft sensor and the truck runs like a dream !!!!!! I believe the Manifold was cracked for a while causing the 1299 code reading ( vacuum leak) the back-fire finished it off! I would check the back of your intake manifold for a leak. The combination of fixing the vacuum leak , cam/crankshaft sensors seems to have fixed the problem. GOOD LUCK!!!
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i have been having the same problem. first it started off with just dieing mostly during idle or well when i stoped at red lights,stops signs but mostly at idle. then it started to die with no warning at 60 mph. and sometimes when i would try to start it back it seemed like it would try then backfire. i put it on an obd 2 reader and have had a code p1391 i looked it up and it was my camshaft position sensor so i replaced it. drove it for a couple of days started to happen again. tried to start it up and my digital milage guage started to flash and i noticed that it read p1391. finally got it home and i havent gotten it to start again all it will do is turn over and over (no fire) evenutally i had to take my battery out and charge it. but it back in negative cable first then the positive cable. tightened up my cables and tried to start it same result my digital milage guage started to flash again it read p0230. turned key off then back on to the on position without trying to start it. all of my guages moved for example 0-125mph. my checkengine light started to flash everytime i heard a clicking noise under the hood so i checked i heard it from the fuse box opened it and it was coming from my TCM relay and also on my sensor on my injector body so far i have replaced the spark plugs, the trottle body position sensor and my camshaft position sensor. started to replace the crankshaft position sensor but well i might aswell drop the transmission to get to the bell housing to get to it. i dont know what else to do
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