You Changed a lot of parts but did not say weather or not the engine is firing or not. if its not, Take an extra spark plug. pull one of the wires from a cylinder and put the plug in it. lay it on the engine block or frame so the plug is touching metal. have someone crank the engine over and see if the plug has spark. This is the easy way if you don't have a tester. MAKE SURE you are NOT touching the plug or wire while cranking the engine over or it will give you one heck of a Shock.
These vehicles are notorious for having shared ground wires that crack or rot and give poor connection to the PCM (power control module)or one of its sensors.
Testimonial: "I have already done that, aswell as i have double checked all conections and varified the firing order double checked the fuel lines to make sure theres a strong flow"
SOURCE: 2003 chev malibu wont start due to lack of spark
That car has 2 crank sensors , did you replace both? One is at the front crank pulley and the other is behind and low on the engine block, above oil pan. Be sure the ICM (ign control module has a good ground, (black wire) it grounds at a bracket where the trans bolts to the engine approx at the 2 o'clock position.
Testimonial: "the check the ground was a good suggestion, i will do that at my first opportunity"
SOURCE: 1997 Dodge Intrepid cranks over won't fire
I have this same NO START problem...
Began with tach giving readings not exceding 1200 rpm with strange 4000 + spikes.. Cruse control would not turn on or off at times and indicator light would only work sometimes..Had several episodes of excessive cranking to get it to start.. Stalling out while driving and even at freeway speeds.. Pulling the negative cable for 10 min. allowed it to start although with lots of cranking and put it in limp mode which required another computer reset to get out of.. Had thrown error codes related to cam and crank sensors which were replaced along with coil and manifold temp sensors.. Had the 9 volt power to sensors when key was on but the check engine light does not stay on with all the other idiot lights..
I wish people who respond would read the post first..
Original post states,
Cranks,No spark,No fuel pump run, changed some sensors ect...
If it cranks it ain't the neutral safety switch, starter or battery!! WAKE UP!!
Seems the computer is not turning on the coil, injectors or fuel pump for a reason.. Find that reason and you will find the solution to the problem.. Seeing as that the computers logic states are a dealer secrete the poster as I have changed many parts in blind hope that it will fix the problem.. Relays, sensors and ecu computer.. Did a visual check of all harness potential wear spots like where it crosses over the power rack..
Could it be in the wiring harness inside the dash??
Could it be a bad ground??
Can an alternator that has failed cause the computer not to start??
Can a bad oil pressure sensor cause the computer not to start??
Can signal loss from the TCU or BCU to the ECU cause this??
Is there an undocumented kill if the ECU thinks it was in an accident??
I can ground the relay line from the ECU and the fuel pump runs and pressures up and the other relays turn on as well..
This crank but no start problem seems to be common with a lot of 1994-2001 Dodge and Chrysler owners.. All these systems have become interlaced with undocumented safety features that baffle the DIYer..If you have seen this and have fixed it PLEASE RESPOND!!!!
SOURCE: my 2002 dodge grand caravan 3.8 l keeps
You could have a clogged Catalytic Converter which would cause the backfiring and non -starting issue.
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