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2005 Chrysler Town & Country Base 4dr SWB FWD

2005 Chrysler Town & Country
Trim Info:
Front Wheel Drive, 5 Door, 2WD Minivans
19 mpg city / 26 mpg hwy
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October 13, 2012, 12:11 pm

S R
 

Question: 2001 chrysler town and country 3.8L V6 cranks but no spark

Here is the list of events and repairs in the order that they occurred.
Van started running bad when running suddenly.
Replaced plugs and wires
van still ran bad
Plugged in van and error code read bad fuel injector cylinder 4.
Replaced fuel injector cylinder 4.
Van ran but died when given gas
Tested fuel pressure - 62PSI
Tested pressure in cylinders. 110-120
Sprayed carb cleaner in air intake
Van ran good. Engine revved.
Van died while running and would not restart
Would not turn over - no crank
Took out started and tested. Starter works
Took off Fuse panel - found some corrosion.
Put Dialectic grease on and reinstalled.
Checked all fuses and relays, including replacing relays
Still no crank
Took out ECM, and put in different ECM.
Still no crank.
Reinstalled original ECM.
Van now cranks but does not spark
Replaced crankshaft sensor.
Replaced camshaft sensor.
Still cranks but no spark.
Key in the on position does not turn check engine light on. Red security skim light comes on. wait 3 seconds to try to star and still no spark.
Disconnected battery, charged and reinstalled.
Following error warnings appear
P1684 - Battery Disconnected with in last 50 starts
P0122 - Throttle position sensor circuit low voltage
P0117 - ECT sensor circuit low voltage
P0107 - MAP sensor circuit low voltage
P1478 - Battery temp sensor volts out of limit
P1599 - A/C pressure sensor volts to low
P1496 - 5 volts not being supplied where needed
P1192 - Inlit air temp low circuit

Any idea what to try next? Completely out of ideas. Any help is appreciated.


October 17, 2012, 11:26 am

Elizabeth K
Expert Mechanic

Testing is important, and so is doing it methodically. Originally it sounded like you had no-spark condition (and there are several different things that could have caused that) but then ran into a no-crank scenario that could have been caused by anything in the starter circuit, but was most likely a low battery.

An ECM will not cause a no-crank. Originally I don't think you had an ECM issue, but right now I think you do. To reset the system and then have 7 error codes is a strong indication of that. Since all of your errors are low voltage coming in, checking the ECM connection and the wiring harness is a great place to start. When disconnecting and re-installing an ECM proper anti-static procedures need to be used, or the new/used ECM can be damaged in the installation process.

Once you clear that problem, you can find some clear info on the steps to the crank/no-start and no-spark problem here:
http://www.2carpros.com/articles/car-cranks-but-wont-start

At this point, I would want to know whether the ignition module is receiving the appropriate inputs, and verify its output.


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