Problem Reports

Went out while still under warranty (just), and again at approx. 90k. Both times the engine light came on and the engine was hesitating slightly. Then one went out again approx. 1500 miles later (local mechanic said it may just have been a bad coil from the manufacturer however the engine hesitated so bad I could barely drive the van to the shop that time around).

Hesitation and rough driving. I've not replaced the parts yet.

 Rookie

Same problem.

 Rookie

check light goes on and off.

LOSS OF POWER LOTS OF SHAKING

At 81,000 the engine light came on indicating a misfire of the spark plug. Replaced all 6 coils and plugs to the tune of $800. Recommend changing the spark plugs before they burn out the coils.

Bought the van with 130,000 mi. Misfire condition at 135,000. Replaced cylinder 2 coil. Fixed. Same problem at 149,000. Code is not cylinder-specific this time. Haven't tried to fix yet.

misfire failed ignition coil

 Enthusiast

missfire but not always

I had a complete tuneup done as well as coil #4 replaced. I just got the same problem again and now I am have the other 5 coils replaced. also got an error code to have a software update done. I am having that done tomorrow. Can't complain too much seeing I have had the van for 6 years and had no problems til now.

 Rookie

Specific engine coils and spark plugs, then all replaced (90k)...corrosion in the coils. About a year later, mechanic finds water in the cylinders and suggests that water is entering the engine due to a faulty design. Engine is running rough again (100k), lots of hestitation and definitely not the powerful van it once was...Will have the engine seal checked as another person suggests, thanks!

Update (103K): Engine seal is fine. Mechanic will create a diversion for the water hitting the rear engine coils. I will again replace all coils and utilize the diversion in hopes that the coils will last longer...I did call a Mazda dealer who was kind enough to tell me that the coils only last 1-2 yrs for whatever reason and that he did not know of a repair for it apart from continuing to change them. :( I have never had the check engine light come on...which would be nice so I know which coil needs replacing. Ebay has them cheap with a lifetime warrenty. I'm going that route.

Update (104k): Engine finally came on...One bad coil. Replaced all coils and plugs (purchased coils on ebay). Mechanic created a system with fireproof tape to divert water away from rear engine coils...however, he said that the coil did not have water corrosion this time and therefore he was not sure this will eliviate the issue. Running great for now!

 Rookie

Same symptoms as everyone else. Mechanic replaced the one bad coil (which was in the rear of the engine, requiring that the manifold be removed) and changed all the plugs. I was not happy with this, as it would have made sense for him to call me and suggest that he replace all 3 rear coils while he had the manifold off. Of course, the problem came back about 1500 miles later. Another rear coil. I bought the coils on Amazon (6 for about $100. Auto shops charge anywhere from $40 to $90 each) and had a new mechanic replace the 3 in the rear. I can easily get to the front ones, and did those myself.

Have had three coils replaced so far. #1, #4 and #5. Is is best to have all replaced?