2000 Town and country backfires during acceleration

My 2000 TC backfires during acceleration, especially hill
climbing. The pop seems to come from under engine. The van has been well
maintained and has 52k mi. I'm thinking maybe
plugs( still has original plugs) or maybe the plug wires.
Wife says that it seems to happen more often when a/c is on. Also, can
someone let me know how to find error codes on vehicle? Thank You!

 

Van pops during acceleration. Noise seems to come from under vehicle. (
mostly happens during hill climbs). Vehicle has 52k miles and has been
well maintained. Service engine soon light is coming on. Is there a way to
get an error code for this? I'm thinking plugs,plug wires or something
electrical. Van still has original plugs.
Has anyone ever dealt with this? Thank you!

T

 

Could be a bad plug wire or coil pack. Plugs will usually go over 100k on
these.
Larry

 

I wish they did. Mine were done around 60,000 miles. The plugs wires
and/or coil pack also sound reasonable.

 

I'd suspect this is happening as the result of a defective spark plug wire.
The "pop" you hear is usually backfiring in the exhaust manifold and exhaust
pipe. It occurs when the wrong plug fires during the exhaust stroke
(defective insulation on the wires which are routed adjacent to each other)
and/or when unburned fuel mixture from a non-firing cylinder gets into the
exhaust. You should get this fixed ASAP so that you don't have (expensive)
problems with your catalytic converter.

While you are going to the trouble of replacing the wires, I'd recommend
that you change the plugs as well. Our 1999 3.8L needed plugs and wires
around 45K miles and 4 years of age. Its been running great since then.

Bob