Question about Dodge Grand Caravan
Posted by Anonymous on
You didn't say year or engine. I worked on a 3.3l from the 90s. The coil pack is three separate coils and plugs 3 and 6 are one coil being no spark on rather plug. Most likely no signal coming in for that coil. The code is for the secondary circuit for that coil. It should be a pulsating signal
Posted on Apr 03, 2015
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Posted on Jan 02, 2017
you need to put a ratchet ******** the front of the engine and remove the dog bone engine mount this will allow the engine to be pulled forward with strap and you can reach behind and remove the plugs or you can get them from underneath the van hand tightened with a spark plug socket and wrench if you overtighten they will break
Posted on Nov 11, 2008
That is a code for the secondary (spark) circuit on cylinder number 3. It is usually caused by a bad connection between the coil and the plug (take the coil off the plug and check for moisture in the boot). If not, it might be a bad coil...
Posted on Sep 17, 2009
check pulse on coil pack conector with noid light ,remember cylinders 1&4 fire at the same time. check pulse while cranking. most likely you have a bad computor or a broken wire
Posted on Feb 25, 2010
Testimonial: "most likely the problem"
SOURCE: 2005 dodge grand caravan 3.8L
Ouch! A case of the raucous rodent! I've been there...Not fun trying to track down and repair all the damage.
First of all, let me explain how the code sets: The computer monitors the PRIMARY side of the coil to determine the burn time on the SECONDARY side of the coil. This can be a little confusing. The code will set when the computer determines that secondary ionization (burn time) was too short, too long, or did not occur at all.
If you have confirmed that there is no spark at the spark plug wires, then that is why the code is setting...ionization is not occurring at all. What can be a little confusing is that this can be caused by a failure in the PRIMARY coil circuit even though the code is indicating that the computer is having a problem with the SECONDARY circuit. (The secondary circuit can malfunction even though the primary side is functioning perfectly, but if the primary side malfunctions, the secondary side ALSO malfunctions - it is impossible for the secondary side to work if the primary side is not working.)
So, I said all that to tell you this: I think you have pretty much eliminated the entire secondary side of the ignition by replacing the whole circuit. So the problem must be on the primary side. (Probably more chewed wires)
There are 4 wires going to your ignition coil. The BROWN/WHITE wire comes from the ASD RElay and supplies battery voltage to the coil assembly. Since the other four cylinders are firing, This wire has to be OK.
The code you are getting is for coil #2. This coil is controlled by computer through the DARK BLUE/TAN wire. If you disconnect your coil connector and probe this wire with a test light connected to the POSITIVE battery post, it should "blink" when to crank the engine over. My guess is that it will not be blinking. You can do this also on the BROWN/ORANGE (coil #1) wire and the DARK BLUE/DARK GREEN (coil #3) wire to see the difference.
Anyway, if the DARK BLUE/TAN wire does not blink, then the wire is broken (chewed?) between the coil and the PCM.
Posted on May 08, 2011
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