Question about 1991 Dodge Dynasty
3.3 engine replaced coil pack cam sensor crank sensor computer plug wires . when i chek the fire it sometimes stops fireing while trying to start.starts 6 out of 10. times could it be the wireing or ignition switch?
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Posted on Jan 02, 2017
SOURCE: 2003 caravan will not start!!!
On your problem with the Caravan.
If you Have replaced the Crank and Cam sensors. And the Code Cam/Crank Correlation sensor.
Normally this code is present When the Timing belt or Timing Chain, Is out of time 1 or more dents
On the timing due to Skip of the timing belt or Chain.
But don't forget check the connector at the sensors. For any damaged or corrosion on the pins.
Ok.. I hope this help to try diagnostic your car.
Thank you for use fixya.
Posted on Nov 03, 2008
It seems like it may not have compression, where as all you need to do to test it is get an engine compression tester, which is a gaudge with a long extension on it to check your cyllender compression. remove all 4 spark plugs, have someone crank the engine over as you hold the gaudge in place. (it may make a pop noise ot a quick hiss if you don't hold down on the tester enough and sometimes when you release it) and if you have the new parts, and the plug is getting the spark, then it may be a head or heade gaskit issue. If you don't have a compression tester, you can usualy rent them at any advance auto parts or autozone. All you do is pay for the tool upfront, and when you return it you get all your money back.
Hope this helps!
Posted on Dec 14, 2008
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!!!!
Posted on May 02, 2010
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