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Mazda MPV Starting/Stalling Problems

75 messages,  Last post on Feb 02, 2012 at 10:15 AM

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What is this discussion about? Mazda MPV, Auto Repair, Van

Messages Page 7 of 8

#56 of 75 Coil trouble by shopdog97

Dec 08, 2009 (8:24 am)

Thanks, Buzz, for the response. I appreciate the info on the aftermarket coils too, perhaps you could share with me exactly where you got them, and I can tell my friend about this. I haven't been able to look at her van yet, my back's been acting up, the weather here in Pa stinks, and so on! I have a lot of things I'd like to look at on this thing and these blogs are great in that they steer me in a good direction to look for trouble. You mention that the coils have a vent hole that lets water in and shorts out the plug. If my friend has vents in the coils, can I use RTV silicone to seal up those holes, at least temporarily? Is that what you use to seal these things, black RTV sealant perhaps? Thanks again for your answers! P.S.- I see that to access the rear coils, you have to remove the intake manifold, is this correct? And when this is done, do gaskets, if any, need to be replaced too?

#57 of 75 MPV coils, etc by buzzk

Dec 08, 2009 (6:34 pm)

I just got on e-bay & searched for 2004 MPV coils & [as I recall] did a "buy it now" at quite a reasobnable price,. this was abt 50 or so K miles - now have >100K on it, so probably abt 2 to 3 yrs ago, +/- a bit. Yes you gotta take off the manifold for back coils; I bought gaskets just in case [not real costly from o'reilly or autozone, I recall], but w/care {& silicone rtv form-a-gasket] the originals may be re-usable. and, yes, like any ex-Navy ET-1, I cleaned up the [wet, very dirty] original coils & sealed the small vent w/silicone & it seeeeeemed to work fine, but.... I was untrusting so got the new ones any-way [& kept the modified originals for spares] - apparently they are just about identical to the coils for many fords that have the same engine. In response to other problems I replaced the throttle position sensor due itstalled at times of slowing down, [but NO codes..!] & that seemed to fix that issue... new water pump recently & have a verrrry small coolant leak to trace down now.. I think it's one of the overly-complex hose connections to the water pump...
 
good luck

#58 of 75 MPV Would Crank But Not Fully Start - IAC Valve by aa0526

Dec 10, 2009 (1:24 pm)

I have a 2002 MPV ... about 130K miles.
Last night - the van would crank - lights would be on full - but the engine would not fully start. I verified my batteries were OK by starting with all lights on ... thru a process of elimination - and this board - I was able to diagnose that I have a dirty IAC valve.
 
I knew I had strong batteries since mine were only 2-3 years old - and my EGR valve was fairly new (once replaced as part of a recall, the other - on my own dime).
I also have a new MAF sensor and new coolant PCU assembly. These were all replaced over the last two years - some as recent as 6 months ago.
 
I took out the IAC valve - a simple 5-10 minute process with the right tools - and cleaned it with acetone (or better yet - use carb cleaner). It was sooty and had significant carbon buildup.
Once clean and dry - I put it back on - and now, the van starts normally now.
 
Thanks for all the previous tips!

#59 of 75 2000 Mazda MPV - Immobilizer by magnum166

Feb 04, 2010 (10:54 am)

My 2000 MPV is experiencing intermittent starting problems and I suspect that the immobilizer circuit is immediately cutting the ignition once the car starts or is not letting the van start at all. The dash light will either fail to come on for the self-test prior to start, or will come on and stay on; either case will not allow the van to run. Most of the time it runs fine, however, occaisionally I will get stuck somewhere and it can take up to 30 minutes to get started again. Normally the dash lights clear but there are times when the immobilizer light will remain illuminated (and the van runs normally).
I would like any recommendations on troubleshooting. Both keys have been checked and work, so I suspect the van. I've made sure the steering wheel is properly seated, door locks are not stuck, gearshift is seated, etc. I do not know what fuses need to be checked for corrosion, etc. All appear to be good, just don't know which fuses work the immobilizer circuit. Any suggestions are greatly appreciated. Thanks, Rick

#60 of 75 Re: MPV Would Crank But Not Fully Start - IAC Valve [aa0526] by painterrick

Jun 05, 2010 (10:02 pm)

Replying to: aa0526 (Dec 10, 2009 1:24 pm)
I think I am having the same problem with my MPV. After yours sat for a while would it start ok, then if you turned it off and tried to restart it would it not fully start. Also, there seems to be a gassy smell.

#61 of 75 Engine vibration 2003 Mazda MPV by sramamur1

Jun 13, 2010 (1:14 pm)

Hello;
 
We have noticed engine vibration when our 2003 MPV (158k kms or ~ 100k miles) is idling at traffic lights or at the parking lot. Vibration would get stronger with longer idling time and the whole van will be shaking.
 
Took it to the local Canadian Tire store (we are from London, Ontario, Canada) and the techs could not read any codes from the van's computer. Either the van's computer is not working properly or the sensors are not sending out any fault codes.
 
They replaced the spark plugs and did the engine flush, but the vibration is still there and the tech can feel it while driving. Now they think that the pulley (where timing belt is) is cracked and is going to replace the pulley and the sensor behind the pulley. They are not sure whether this will solve the problem.
 
Because they cannot read the codes, they are guessing and changing parts they think causing the vibration problem. I did the engine tune up only last month and hence not sure what is the real cause of the vibration issue.
 
Any help you can provide will be greatly appreciated.
 
Thanks so much,
 
Sridhar.

#62 of 75 Re: Engine vibration 2003 Mazda MPV [sramamur1] by subearu

Jun 13, 2010 (4:56 pm)

Replying to: sramamur1 (Jun 13, 2010 1:14 pm)
I answered over at MPVClub and in another thread here on Edmunds.
 
-Brian

#63 of 75 intermittetn problem on 2000 mpz van by lreyes

Nov 21, 2010 (9:39 pm)

My 2000 mazda MPV is having intermittent starting problem. it would not crank once i while, but sometimes If I hold the ignition key a little bit longer, it would start right away. I just replaced the starter,electronic ignition switch and also cleaned the spade female connector coming from harness assembly and still having intermittent starting problem. I also had my battery checked and they did not find any problem..

#64 of 75 Re: intermittetn problem on 2000 mpz van [lreyes] by jipster

Nov 22, 2010 (2:26 pm)

Replying to: lreyes (Nov 21, 2010 9:39 pm)
I've had a faulty battery check out okay once. May be worth another look.

#65 of 75 Re: intermittetn problem on 2000 mpz van [lreyes] by buzzk

Nov 22, 2010 (10:49 pm)

Replying to: lreyes (Nov 21, 2010 9:39 pm)
In my experience what you describe is usually in the circuitry that energizes the starter relay rather than the other things you replaced [except the ignition switch] - at, I am sure, significant expense. There are typically limit switches on the shifter that require an automatic to be in park or neutral or a manual to be in neutral & a manual will also have a clutch switch, requiring it to be depressed [held in]. These are often hard to find & a bother [or costly] to replace. It's usually an 'OEM' part. This is not at all unique to MPV's; my Subaru has been like that since it was nearly new. I just wired a 12 volt relay to energize the starter relay and I control that relay w/a spring-loaded normally off ["momentary on"] switch you can buy from Radio Shack. If it wont start w/the key I just push the switch [w/the ignition 'on'] & it fires right up. Been woking fine for abt 11 years. I've done the same w/many cars over the years. Good luck.
 
BK

Messages Page 7 of 8

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