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2002 Mazda Millenia engine shuts off when braking.

Tiny
KSWANN
  • MEMBER
  • 2002 MAZDA MILLENIA
  • 2.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 256,000 MILES
Hello. My 2002 Mazda Millenia engine has recently begun to stall its self off between braking, and coming to a complete stop, and accelerating. Days ago the Check Engine Light began to flash, so I assumed misfire and just drove a different vehicle for a few days. I fired up the Mazda today and there was no flash. I noticed a few times when I would brake my oil light would come on, but when I released the brake it would go back off. The car has over 256k miles, and I know they are prone to issue. I also believe when the car dies the battery light comes on but it starts back up with no problem. Could this be alternator? Bad battery connection? Still a misfire? Low oil pressure although the oil level is sufficient?
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Friday, January 24th, 2014 AT 11:26 PM

5 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
With that kind of mileage that engine is going to have some serious internal mechanical issues with wear and it probably isn't worth pursuing this issue because you will be fighting a losing battle.
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Saturday, January 25th, 2014 AT 6:35 AM
Tiny
KSWANN
  • MEMBER
  • 3 POSTS
Oh wow, I really meant 156k miles, I was thinking of my Silverado, and that thing is solid. It has 156,772 miles. Far from 256k. I am sorry for that misinformation.
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Saturday, February 1st, 2014 AT 7:02 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.
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+2
Saturday, February 1st, 2014 AT 7:06 PM
Tiny
KSWANN
  • MEMBER
  • 3 POSTS
Fuel trim bank 1
fuel trim bank 2
cyl 4
cyl 6
exhaust gas recirculation flow malfunction
exhaust gas recirculation circuit range/performance
The P1173 is indicating a non-switching condition detected with the left bank upstream oxygen sensor.
Fuel air metering control
fuel pressure regulator control unit

all of these are deriven from the codes. I would think this would be a domino effect. What would you suggest looking at first? It sounds like there is a vaccuum leak around the manifold, and there seems to be a slight valve cover gasket leak.
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Sunday, February 2nd, 2014 AT 6:43 PM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
I've already advised you on how to proceed. To add to that, remove the EGR valve and make sure the pintle is not wedged open with a chunk of carbon.
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Sunday, February 2nd, 2014 AT 6:48 PM

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