Mazda 626 stalls in neutral or park

BB

Mazda 626 stalls in neutral or park

by BB » Wed, 03 Sep 2003 10:10:17

Have a mazda 626 that runs fine but will stall when put into park or
neutral.  The rpm will drop down until it stalls.  Changed plugs and wires
with original equipmnent.

Thanks in advance,
Any help appreciated

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Don Brude

Mazda 626 stalls in neutral or park

by Don Brude » Wed, 03 Sep 2003 14:03:02



What year?

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Larry Web

Mazda 626 stalls in neutral or park

by Larry Web » Thu, 04 Sep 2003 03:56:30

Check the air intake hose for cracks. These can be very hard to see
(best to remove and inspect) and can cause this problem. If it's bad you
can either replace it or cheap out like I did and wrap a lot of
electrical tape around it.

Larry


> Have a mazda 626 that runs fine but will stall when put into park or
> neutral.  The rpm will drop down until it stalls.  Changed plugs and wires
> with original equipmnent.

> Thanks in advance,
> Any help appreciated

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w?

Mazda 626 stalls in neutral or park

by w? » Thu, 04 Sep 2003 07:26:25

Could that be why my '90 626 stalls when I set at the light or put it in
reverse? I too have replaced the plugs, wires, cap, rotor, damn near
everything. How coule a cracked air intake cause this? Is there some
sensor I need to clean?

(sorry to hijack your thread BB)



> Check the air intake hose for cracks. These can be very hard to see
> (best to remove and inspect) and can cause this problem. If it's bad
> you can either replace it or cheap out like I did and wrap a lot of
> electrical tape around it.

> Larry


>> Have a mazda 626 that runs fine but will stall when put into park or
>> neutral.  The rpm will drop down until it stalls.  Changed plugs and
>> wires with original equipmnent.

>> Thanks in advance,
>> Any help appreciated

>> -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
>> http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
>> -----==  Over 100,000 Newsgroups - 19 Different Servers! =-----

Larry Web

Mazda 626 stalls in neutral or park

by Larry Web » Thu, 04 Sep 2003 07:50:12

The non metered air passing through the cracks (after the MAF Sensor)
causes a fuel mixture problem.

The hose is a very common failure, even if you don't see any cracks,
wrap it with electrical tape and see if that helps.

Larry

Larry R. Webb
Rov-a-tune Auto Repair
Cazenovia, NY
http://www.rovatune.com


> Could that be why my '90 626 stalls when I set at the light or put it in
> reverse? I too have replaced the plugs, wires, cap, rotor, damn near
> everything. How coule a cracked air intake cause this? Is there some
> sensor I need to clean?

> (sorry to hijack your thread BB)



>>Check the air intake hose for cracks. These can be very hard to see
>>(best to remove and inspect) and can cause this problem. If it's bad
>>you can either replace it or cheap out like I did and wrap a lot of
>>electrical tape around it.

>>Larry


>>>Have a mazda 626 that runs fine but will stall when put into park or
>>>neutral.  The rpm will drop down until it stalls.  Changed plugs and
>>>wires with original equipmnent.

>>>Thanks in advance,
>>>Any help appreciated

>>>-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
>>>http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
>>>-----==  Over 100,000 Newsgroups - 19 Different Servers! =-----

Danie

Mazda 626 stalls in neutral or park

by Danie » Thu, 04 Sep 2003 09:39:38

I suggest you also check the PCV valve hose ( or any other vacuum hose you
can find). I just changed my PCV valve. I tried running idle the engine with
the hose off: the engine slows down  gradually untill it stops completely.
This description is similar to your symptom.

I also had a 1988 626 before . Once the air bellow had a small leak, causing
erratic idling,  and engine hesitation  when starting from stop untill
reached second gear speed (manual ***).  I used the electric tape method
to seal the leak - lasted for years !!

Daniel from Montreal


> The non metered air passing through the cracks (after the MAF Sensor)
> causes a fuel mixture problem.

> The hose is a very common failure, even if you don't see any cracks,
> wrap it with electrical tape and see if that helps.

> Larry

> Larry R. Webb
> Rov-a-tune Auto Repair
> Cazenovia, NY
> http://www.ringcar.com/


> > Could that be why my '90 626 stalls when I set at the light or put it in
> > reverse? I too have replaced the plugs, wires, cap, rotor, damn near
> > everything. How coule a cracked air intake cause this? Is there some
> > sensor I need to clean?

> > (sorry to hijack your thread BB)



> >>Check the air intake hose for cracks. These can be very hard to see
> >>(best to remove and inspect) and can cause this problem. If it's bad
> >>you can either replace it or cheap out like I did and wrap a lot of
> >>electrical tape around it.

> >>Larry


> >>>Have a mazda 626 that runs fine but will stall when put into park or
> >>>neutral.  The rpm will drop down until it stalls.  Changed plugs and
> >>>wires with original equipmnent.

> >>>Thanks in advance,
> >>>Any help appreciated

> >>>-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
> >>>http://www.ringcar.com/ - The #1 Newsgroup Service in the World!
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w?

Mazda 626 stalls in neutral or park

by w? » Thu, 04 Sep 2003 10:06:16

That's it exactly! The hose had a split on the underside about 2" long. I
don't think the tape will hold forever though. The engine moves quite a
bit when I go from Reverse to Drive. Hope the dealer can get one for me.
Else I'm gonna need a boatload of 3M electrical tape...

Thanks a bunch quys. I'll down an extra brew for ya'.



> The non metered air passing through the cracks (after the MAF Sensor)
> causes a fuel mixture problem.

> The hose is a very common failure, even if you don't see any cracks,
> wrap it with electrical tape and see if that helps.

> Larry

> Larry R. Webb
> Rov-a-tune Auto Repair
> Cazenovia, NY
> http://www.rovatune.com


>> Could that be why my '90 626 stalls when I set at the light or put it
>> in reverse? I too have replaced the plugs, wires, cap, rotor, damn
>> near everything. How coule a cracked air intake cause this? Is there
>> some sensor I need to clean?

>> (sorry to hijack your thread BB)



>>>Check the air intake hose for cracks. These can be very hard to see
>>>(best to remove and inspect) and can cause this problem. If it's bad
>>>you can either replace it or cheap out like I did and wrap a lot of
>>>electrical tape around it.

>>>Larry


>>>>Have a mazda 626 that runs fine but will stall when put into park or
>>>>neutral.  The rpm will drop down until it stalls.  Changed plugs and
>>>>wires with original equipmnent.

>>>>Thanks in advance,
>>>>Any help appreciated

>>>>-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
>>>>http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
>>>>-----==  Over 100,000 Newsgroups - 19 Different Servers! =-----

BB

Mazda 626 stalls in neutral or park

by BB » Thu, 04 Sep 2003 11:01:56

It's a '99.  Engine idles at about 700 750 rpm in drive or reverse. After
the wire change, the rpm will only dip down to about 400 rpm. Almost to the
stall point, wires helped alot but didn't solve the problem completely.
Will try wrapping the intake hose after the sensor, but there doesn't seem
to be any leaks.  One point to note is that if the air is on, the rpm  dips
very little if any and no stall.




> > Have a mazda 626 that runs fine but will stall when put into park or
> > neutral.  The rpm will drop down until it stalls.  Changed plugs and
wires
> > with original equipmnent.

> What year?

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Don Brude

Mazda 626 stalls in neutral or park

by Don Brude » Thu, 04 Sep 2003 12:39:24



Hmmm... '99 is newer than I've got a reference for. I "specialize" in
the '79-'82 626s, since I've got an '82 (actually, about two and about a
half '82s, if you count parts) and all of those years are
interchangable.

Do try wrapping (or if you're into spending money, replacing) the
ductwork, though. As others have said, the MAF sensor is likely being
bypassed by a leak (even if there isn't one you can *SEE*...) in the
ducting, and it's a cheap and fairly long-lasting fix. If it is leaking,
that ends up giving the computer falsely low data about how much air is
actually being sucked in, which in turn dumps faulty data into the
stream controlling the fuel injection, which looks at it and says "Oh...
not sucking as much air. Give it less fuel", making the mix leaner and
leaner after each sample of engine conditions, until finally it hits the
point where it can't stay running and dies.

On the '79-'82, when the A/C switch is turned on, not only is the A/C
compressor clutch engaged, but a relay tied into a vacuum solenoid
(which is in turn connected to a diaphragm that pulls the throttle lever
varying amounts depending on amount of vacuum, sorta like cruise
control) kicks on at the same time to boost engine revs slightly. If the
'99 has a similar system connected to the A/C, that's probably plenty to
override the idle routine and keep it running.

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Danie

Mazda 626 stalls in neutral or park

by Danie » Fri, 05 Sep 2003 10:40:45

Do try the electric tape - even if you use the whole 2 dollar reel. You will
be surprised how far this will take you. You can buy dozens of electric tape
reels for the same money the dealer will ask for the original part.

DANiel  Montreal