Last post on Aug 22, 2013 at 4:30 AM
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Mazda MPV, Electrical, Van
#40 of 74 Re: 2004 Mazda MPV issues [jipster]
Dec 13, 2009 (9:41 am)
Hi, Jipster. I did have an opportunity to use my OBD2 on our friend's 04' MPV. I got a code PO303, which translated into a #3 cylinder misfire that no doubt means that her #3 coil has shorted out, causing her problem. She clarified for me that the last one she had replaced(only about 3 weeks ago now) was the #5 coil. So now in the last 2 months, she's replace her #1, #5, and now needs the #3 if she wants to get this thing running which, by the way, it a nice looking vehicle. I didn't look at the odometer to see how many miles is on it. She told me she had that PCV hose replaced a while ago, and I told her about another readers de-carbonizing proceedure involving the IAC on top of the throttle body and how using Gumout he was able to get his to work better. She is going to put her van in a shop this week as she wants to take it to NC over Christmas. So hopefully this issue will get corrected, but I told her husband that I'd think twice before buying one of these vehicles, given what I've read here on these blogs about it. Sounds to me that some engineer at Mazda was asleep at the design table when this model was conceived!
#41 of 74 MAZDA 2002, 80K mi, Japan assembled, cylinder#4 misfire
Mar 27, 2010 (10:21 am)
MAZDA 2002, 80K,Japanees esembled; engine light problem one year ago made me to, change all coils, all spark plugs.Now Light comes back for misfire #4 cylinder, also sometimes code says O2 sensor close by catalytic converter bad. I have used fuel injector cleaner few times but light comes back off and on. My question is how to locate cylinder #'s and what should I try now?
#42 of 74 Re: MAZDA 2002, 80K mi, Japan assembled, cylinder#4 misfire [shahidc]
Mar 27, 2010 (2:31 pm)
Cylinders are: (back of engine towards driver)
#1 #2 #3
Then the next 3, which are easy to get to, are in the front towards the radiator.
#4 #5 #6
May check the coil and plug in cylinder 4 since it's easy to get to ( a couple of bolts), though I can of doubt it would go bad so early. Throttle body may need direct contact cleaning.
#43 of 74 Re: MAZDA 2002, 80K mi, Japan assembled, cylinder#4 misfire [jipster]
Mar 29, 2010 (12:37 pm)
Thank you jipster,
I replaced the new #4coil which I put and swaped with the old one for checking that I had last year. I drove the van and light came back again. I also checked the #4plug which by looking at it just burning fuel right like the other cylinders(no carbon on it, same gap, no debbrie). I use one fuel injector cleaner once a month(Lucas) since this problem. I changed my air filter last year and cleaned throtle body last year. After all this supported information what would be your suggestion?
#44 of 74 Re: I need help. [questionmark]
Mar 30, 2010 (4:48 am)
I am just a owner of 2002 mpv and having similar problems off and on and look like is a pain to me because I very sensitive about cars. Anyhow to give you some ides that the O2 cost about $200 a piece at Auto Advance and there are three sensors. It will cost you abut $150 (not dealer price) labor cost.
#45 of 74 Re: MAZDA 2002, 80K mi, Japan assembled, cylinder#4 misfire [shahidc]
Mar 30, 2010 (2:40 pm)
what would be your suggestion?
I get a lot of my informtion from the mpvclub.com.
#46 of 74 Re: I need help. [dtownfb]
Apr 29, 2010 (8:45 am)
I have got the code for the check engine light. It is P0103 = MAF OR VAF High Input , P0031 = HO2S Bank 1 Circuit 1 and OBD 11.
These are the codes. I have just now changed my #4 cylinder new plug and new coil. I have also used a whole bottle of Mass air Flow cleaner, through air filter, in running engine condition, but the dilemma is still there. Earlier it was flashing but now it is still.
Please need expert advise.
#47 of 74 Re: I need help. [dtownfb]
May 10, 2010 (7:22 am)
I have a quick question. I have MAZDA MPV 2002 with 83K on it and I need service plan on it. I never had warranty on it and the van is in excelent shape for last five years and I want to keep it but I need protection for unforseen expenses. Do you know any company or dealer who offers service or maintenace plan for it.
I will be looking for your response.
#48 of 74 Re: I need help. [dtownfb]
May 29, 2010 (5:42 pm)
I have MAZDA MPV 2002 LX and engine light is keep coming back on for misfire on Cylinder #4. Recently I have changed all plugs and all new ignition coils. I had also used Lucas brand concentrated Fuel Injector cleaner few times. Any more idea anybody has.
Thank you much.
#49 of 74 CYLINDER #4 MISFIRE
Jun 05, 2010 (3:10 am)
I have a code P0304 keep coming back, on MPV 2002 85K.
I replaced the new #4coil which I put and swaped with the old one for checking purpose that I had last year. I drove the van and light came back again. I also checked the #4plug which by looking at it just burning fuel right like the other cylinders(no carbon on it, same gap, no debris), I put new one anyway. I use one fuel injector cleaner once a month(Lucas) since this problem. I changed my air filter last year and cleaned throtle body last month. I have just changed O2 Bank 1 Circuit 1. I have thoroughly cleaned the coil conductor and rubber for #4 for moister, in case if there is any. After all this supported information what would beyour suggestion?