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The power stroke engine has several things that will cause this problem #1 crank shaft sensor AKA cam shaft sensor on crank shaft located on passenger side of engine near crank shaft pulley # 2 IPC sensor Injection pressure control if has oil in sensor replace it & wiring pigtail .#3 high pressure oil pump not up to par. #4 injection pressure regulator solenoid they get sticky. with a good scanner that has FORD enhanced software you can check all of these without leaving the drivers seat and perform running tests on injectors and test the ficm module interface with the pcm. Fuel Injection Control Module & Power Control Module.
still could have a fault in crank sensor wiring ,,, you need to plug in diagnostic tool when it wont start and see if you have a engine revs reading ,,, also check if fuel is getting to the engine ,,,, that car also has immobiliser so try spare key to see if problem goes away ,,,,,, wont get codes on that age group unless problem happens when driveing
you forgot the coolant temp sensor, this regulates how much fuel it needs according to temp outside, it can be read with a scan tool, it costs approx 20.00 and make sure they sell you the right one,you don't want the temp sender....You want coolant temp sensor ! In layman terms it's like a choke...more fuel when cold and less fuel when warm.
Cylinder 1 is not firing or is intermittently firing. Check the output on the coil associated with #1 cylinder by using a spare plug attached to #1 wire while engine is running. If it has good spark, check the fuel injector for possible problems. Crank shaft sensor would not be the problem as the engine has to have it to run. You may need to have it checked further at a reputable repair shop as this can get more involved than a back yard repair.
if the car has the V6 engine the crank sensor is on the back of the engine right behind the trany. out-put shaft one plug in with 2 wires one mount bolt it not that hard to change...GOOD LUCK
Ok for an engine to run it needs air,fuel,spark and compression. You said you replaced the fuel pump. Have you checked your pressure after you replaced it? Also check the fuel pressure regulator and I've seen tons of parts house pumps fail on these and the Mark VIII's. You said you've checked for spark and you do have spark. I know this may sound silly but have you made sure the air filter is completely clogged? Also I'd pull the plugs back out, let 'em air dry for a bout 30mins or so, put them back in and try again. Wet plugs won't fire. Also make sure you have the cam sensor and crank sensor in properly and connected!
Oh, great...just bought a '95 626 for my daughter and we're going thru the same problems. Was told to replace valve cover gasket and plugs and wires. replaced filters and put in new oil and fluids. Also read somewhere it could be alternator issues.
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