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Mazda MPV Electrical System/Lights

73 messages,  Last post on Dec 27, 2012 at 2:57 AM

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What is this discussion about? Mazda MPV, Electrical, Van

Messages Page 5 of 8

#33 of 73 All Dashboard warning lights are on by mitch65

Nov 11, 2009 (3:54 pm)

After my mechanic fixed a couple of things related to a check engine light, some sensor problem I believe, all the warning lights on the dash stay on continuously now. He said it was probably that the computer needed to be reset and said it would probably be $100 to have Mazda do it. Does this sound right? Anyway I can do something about it myself? Is it fuse related?
It's a 2002 MPV LX, original owner, about 70k miles.
Thanks!

#34 of 73 Cant get answers anywhere. by mailsom

Nov 17, 2009 (6:45 am)

Hi New to this too.
Got a Mazda MPV 2003, 2ltr Deisel. Have had since 04. Problems.
Electrics, driver window stuck down, had motor ,regulator and control unit replaced window now fine £700 later. However cental locking system had been playing up before this , key fob no longer works despite battery change, F passenger door lock dodgy, alarm goes off 90% of time on unlocking front doors, is only fine from rear. Mechanic had reckoned control unit replacement would possibly help but it didn't. Any ideas?
Also excessive engine oil usage ,1 ltr per week approx. alot of smoke discharge from exhaust white and black on starting& acceleration. This despite oil & filter changes and additives to oil and fuel. No leak. ?

#35 of 73 2005 mazda mpv idle problems by vclsmith

Nov 22, 2009 (3:12 pm)

My Mazda is idleing very high when started. RPM is up to 1.5 and will not idle down at all. Did anyone have this proble before?

#36 of 73 2004 Mazda MPV issues by shopdog97

Dec 04, 2009 (8:55 am)

I see some of the above commentary and wonder if these problems with this model is what is causing the same thing in a friend's MPV. She is a great lady from our church who has had to replace at least 3 coil packs recently. She just spent over $700 in the last month alone on what I believe to be electrical issues. She was on her way to her mother's home in North Carolina for Thanksgiving when the van just started going haywire. The engine light came on and a 3 hour trip took nearly 5 hours because she said she lost power and when she gave it gas it felt like it was going to shut down on her. She finally got there and took it to a garage where they did 3 or 4 hundred bucks work of whatever(I didn't see her bills from either garage, the one before and this one, so I don't really know ALL they did) Well, I think she said it was another coil pack, #5 this time. Now that was a little over a week ago, and she called me this morning and told me that the trouble has returned exactly the same way as she was taking her young son to an appointment. I have an OBD2 scanner and offered to scan the computer for her and go from there. This thing sound nightmarish to me! Why does this van seem to have a lot of trouble with coil packs? Seems to me there has to be an underlying electrical issue at play here. I asked her to call a friend of mine in the service dept. of our local Mazda dealership and see if there were any service bulletins issues about this problem. If anyone can steer me in the right direction here, I'd deeply appreciate it, and I hope you all have a joyous Holiday Season!!

#37 of 73 Re: 2004 Mazda MPV issues [shopdog97] by jipster

Dec 04, 2009 (9:32 pm)

Replying to: shopdog97 (Dec 04, 2009 8:55 am)
The 2004 MPV doesn't have coil packs. They have individual coils for each spark plug. The #5 is in the front and should have been very easy to replace... 5 minutes. The 1-3 coils are on the back of engine and require an hour and a half of labor. The coils are problematic, and as such I wouldhave your friend ask Mazda replacement under "goodwill". A poor design allows water to foul the coil. I had a coil go bad after running through a large water puddle during a downpour. Even though I was 4 k miles out of warranty, Mazda replaced under goodwill. You might also want to check the PCV hose, as there has been widespread problems with it as well... similar symptoms. I read a step by step "how to do a full coil replacement" on the MPVclub web site, if you're fairly handy it is something you could do and save your friend some big money.

#38 of 73 Re: 2004 Mazda MPV issues [jipster] by shopdog97

Dec 08, 2009 (7:58 am)

Replying to: jipster (Dec 04, 2009 9:32 pm)
Thanks, jipster, for your comment.I will add that to my list of things to look for if I ever get to our friends house to look at her MPV. It's cold here in Pa now, and my back has been bothering me to the point where it's been difficult to solve MY OWN vehicle issues. I also learned from another blogger that his Idle Air Solenoid got carboned up and after he cleaned it and the throttle body as well, his MPV ran a lot better. Thanks for the heads-up about the PCV, I'll check that too. She is fortunate she has another vehicle to drive, but she wants to take her van down to NC for Christmas. Hopefully we can get to the bottom of this soon. P.S. Can you give me info for that Mazda MPV website on how to do those coil repairs? Thanks!

#39 of 73 Re: 2004 Mazda MPV issues [shopdog97] by jipster

Dec 09, 2009 (6:20 am)

Replying to: shopdog97 (Dec 08, 2009 7:58 am)
There are many "do it yourself" posts at MPVclub.com. How to replace the coils has a pretty cool step by step instructional complete with photos... it is under the "Problems" forum. There is also more info on how to replace a PCV hose.

#40 of 73 Re: 2004 Mazda MPV issues [jipster] by shopdog97

Dec 13, 2009 (10:41 am)

Replying to: jipster (Dec 09, 2009 6:20 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 73 MAZDA 2002, 80K mi, Japan assembled, cylinder#4 misfire by shahidc

Mar 27, 2010 (11:21 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 73 Re: MAZDA 2002, 80K mi, Japan assembled, cylinder#4 misfire [shahidc] by jipster

Mar 27, 2010 (3:31 pm)

Replying to: shahidc (Mar 27, 2010 11:21 am)
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.

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