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The coil on plug style ignition coils have been a very weak spot in the 2002 and later MPV. Moisture can get inside and short out the internal workings. Also make sure that you have the correct electrical connectors plugged into the correct ignition coil. It is possible to accidently swap the connectors for #4 and #6 ignition coils and the harness still looks like it is routed correctly.
As this is on the rear bank the intake Plenum has to come off or at least be raised, did mine just a few days ago wasn't as difficult as I expected. However if you are going there replace all 3 coils while you are there and check the plugs as well. Allow 2-3 hours for first time.
No 2 is on the rear bank, to get at it the intake plenim has to come off, if going there it pays to do all 3 coils while there. If one has gone the others are prbably near thear end as well, and it's labour intensive to have to do again.
Back, from LEFT to RIGHT: 1-2-3
Front, from LEFT to RIGHT: 4-5-6
I really hope your bad coil is in the front (4-5-6).
Rear ones are not funt o get to. Not impossible, but a pain. My No.3 went out this Summer, so I know. I changed all three coils in the back, and refreshed ALL plugs.
Hi, this car doesn't have just one coil, it has a separate coil for each spark plug so u have six coils, the coil is plugged right onto the top of the plug in a deep well this is called a "coil over" ignition system, see picture of coil below Thanks
this car doesn't have just one coil, it has a separate coil for each spark plug so u have six coils, the coil is plugged right onto the top of the plug in a deep well this is called a "coil over" ignition system, see picture of coil below
Ignition coils is the most common failure parts for MPV. There are 6 of them in your engine. Now probably few of them are bad again. I don't certain think the # 1, 2, 3 are bad since the recent replaced ones also could be bad to.
If you buy individual one will cost you around $57 each.
http://sd.autohausaz.com/autohausaz/detailw.jsp?sid=nesyyx55nrrgf5bhpv0yzoi4&partner=autohausaz&year=2004&make=80&model=18094~~~10000091~~~@MPV&category=240798@Engine%20Electrical&part=240858@Ignition%20Coil If you buy all of 6 will save your money. I'm not a seller. I found this information to help you to control the cost. Otherwise the bill will be costing a lot. This is why we are coming to Fixya, right? http://shop.ebay.com/i.html?_kw=mazda&_kw=MPV&_kw=ignition&_kw=coils&_ckw=2004&_trksid=p3286.m104.l1198 Have the mechanic replace all of 6 after you got the part and ask him to weed out the bad ones then keep the good one for later use.Good luck.
This is a known issue. Doesn't have to do with overheating or moisture, or whatever. Mazda is making a killing on replacing these coils. Going on 3rd set, luckily first two times were covered under warranty.
I can almost guarantee its the ignition coils. Its common with the 2004 mazda mpv. They are very expensive but I just changed my #3 coil and boy im I glad I did that. With the Mazada mpv 2004 hopefully a check engine light will come on so you can see which ignition coil it is. Once you find out change it and the spark plug that goes under it. If its one of the back ignition coils its gonna be expensive or time comsuming. I would change all three coils in the back and all three Spark plugs so that you dont have to worry about them again since you have to open the manifold just to get to them. I recomend taking it to a auto shop that you trust. While your back their you can change the pvc valve and bromet I think its called (the cushion for the pvc valve). Its all in the same area. The ignition coil could run from about 45 dollars each to about 65 depending on where you go. One more thing, if the check engine light comes on you have to check it quick because it cancells it self out if the ignition coild is not that bad yet. the sometimes it stalls and sometimes it doesnt syndrome. you take it to the shop and it doesnt happen again until your home thing lol. Thats just the beggining of it going bad.
After I changed my Iginition coil and all three spark plugs in the back of the engine the car runs like a race horce. no more stalling. im very happy I did that. It cost me about 125 for the coil and the three spark plugs and a new thermometer for another issue. and about 200 bucks to put them in, I think I got a good deal considering most dealers in nyc charge 100 bucks an hour to work on your car. Its not that big a deal of the work. You just have to know what your doing. It took him about 5 hours to complete the job. I hope this was helpful.