Dodge Caravan Engine Code P0300 and P0303?

[BASIC]

The Service Engine light came on in our 05 Dodge Caravan P0300 Engine Misfire Detected and P0303 Cylinder 3 Misfire Detected,what do I do?Thanks.
Ron

[Pickering Snow]

Ron

300 is random misfire which lead to number 5 it can go a few ways anything that can make #5 miss ie Plug, wire, coil pac, injector, vaccum leak and on and on it should be taken to someone you trust because i hate to see you throw parts at it.

[BASIC]

Thank you Fred.
Ron

[Powersmoke]

There was a factory service bulletin on 2005 Chrysler/Dodge minivans with the 3.3 or 3.8 engine related to random cylinder misfiring (P0300, 301, 302, etc.).

It involves replacing the spark plugs and wires, along with a PCM software update. The TSB # is 18-018-04

[BASIC]

Powersmoke,thank you.
Ron

[Plow Dak]

heheh .
just did a used car check today on a 05 caravan.

And like deja vu had a check engine light.
checked the rest of the car over and scanned the puters.
MMMMMMMM PO300 and PO302

Like where have i seen this before.
Thought you'd get a kick out of it. :wink

[SIPLOWGUY]

I get #3 misfire on my 97 Grand Cherokee. It comes and goes.

[Powersmoke]

I get #3 misfire on my 97 Grand Cherokee. It comes and goes.

Straight six or V8?

[Pickering Snow]

I get #3 misfire on my 97 Grand Cherokee. It comes and goes.

If its a 4.0 in 97 i was still working for the jeep dealer did a ton of Valve springs and Decarb of cylinders for this problem.

Honeslty Start with Decarb of cylinders first , if problem presists, providing the basics are ok , then a weak Vavle spring is most likly the culprit.

[SIPLOWGUY]

4.0 6 cyl. I did the decarb. I think it needs valve springs. As long as the light is off once a year I'm good for an inspection sticker.