2 like 0 dislike
25.2k views
by

2005 Dodge grand caravan, po300 code, runs and drives great but rough idle, just replaced spark plugs and coil and spark plug wires, no more code for cylinder 4 but still have po300 code coming on???

Vehicle: 2005 Dodge Grand Caravan 3.8L

1 Answer

0 like 0 dislike
by (13.4k points)
 
Best answer

P0300 Random misfire

Look for any vacuum hose that may have come out this would cause a rough idle and not necessary set a lean code condition

Dodge Grand Caravan Code P0300​ 

Here on this Dodge a vacuum hose somehow was disconnected, this set a P0300, the find was easy because you could hear vacuum noise. it did not set a Lean code condition but a P0300.

Related questions

0 like 0 dislike
1 answer 1.1k views
0 like 0 dislike
1 answer 271 views
1 like 0 dislike
1 answer 355 views
0 like 0 dislike
0 answers 297 views
1 like 0 dislike
1 answer 357 views

36.2k questions

32.2k answers

1.3k comments

22.8k users

Need A Repair Shop?
Find local automotive repair shops in your area.
Does your car have Safety Recalls? → Check here
...