- #2469 of 2476
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Re: Water does not flow from radiator to reserve tank
by autobahn5
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Sep 21, 2009 (1:20 pm)
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Yes, there's a pipe (usually a hose) linking the plastic reserve tank to the radiator, and it might have been blocked, though, this is rarely the case.
Most overheating problems in 626s arise from wiring problems with d cooling fan(s) (e.g. burnt out wires) or blocked radiator cells (usually from accumulation of sludge over time due to filling with dirty water).
To prevent overheating, always be sure that your cooling fans are indeed working whenever u switch on d car engine. If ur engine still overheats with d fans working, ur radiator cells may be clogged. Finally, if u've had ur radiator removed and d cells cleaned out at a mechanic's, and ur car still overheats, d source is definitely from excessive friction within d engine block. U might need to change ur oil, filter and spark plugs.
I,m certain by d time u've tried all these, ur car will b just o.k.
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- #2470 of 2476
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Re: Water does not flow from radiator to reserve tank [autobahn5]
by gyates
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Sep 21, 2009 (7:56 pm)
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Replying to: autobahn5 (Sep 21, 2009 1:20 pm)
These cars are also known for the coolant tank developing a leak at the bottom. I have replaced the tank on my daughter's '99 model twice in the past 3 years. Both developed cracks on the bottom in the seam of the plastic tank. First indicator of a problem was overheating, especially when stopped at traffic lights.
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- #2471 of 2476
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1996 MAZDA 626 ENGINE STOPPED RUNNING
by jmclelland
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Sep 30, 2009 (10:16 am)
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i WAS GOING DOWN THE INTERSTATE AND THE MOTOR STOPPED PULLING. BY THE TIME I COASTED TO THE SIDE OF THE ROAD THE ENGINE DIED AND WOULDN'T START. I HAVE HAD FRIENDS TELL ME THAT IT'S TIMING BELT. COULD THIS BE TRUE? AND I ALSO HAVE A MAJOR OIL LEAK INSIDE THE TIMING COVER THAT I CAN'T FIGURE OUT WHERE IT'S COMING FROM.
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- #2472 of 2476
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Re: 1996 MAZDA 626 ENGINE STOPPED RUNNING [jmclelland]
by askperry
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Nov 02, 2009 (7:34 pm)
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Replying to: jmclelland (Sep 30, 2009 10:16 am)
Yes, a timing belt failing will cause the engine to die. but there are lots of other things can cause the engine to stop. Top things that come to mind are, dead battery, failed alternator, alternator belt breaking, ignition coil failing, spark plug wire to ignition coil failing, overheating, engine fuse blowing and of course running out of gas.
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- #2473 of 2476
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Re: 1996 MAZDA 626 ENGINE STOPPED RUNNING [askperry]
by saeedabidi
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Nov 03, 2009 (6:04 am)
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Replying to: askperry (Nov 02, 2009 7:34 pm)
Once on a freeway my mazda 626 1999 model car all of sudden died, in such a way that dash board lights and all electrical functions went dead and the car comes to a complete halt. This was simply due to a dead fuse, but the mechanic charged me $600 US$ and at that time I was not sure. My car was coming from a hot environment and then into a sudden cold and was probably running for 2 days continuously, and that could have contributed to this. So do make sure that it is not the fuse.
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- #2474 of 2476
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Re: 1996 MAZDA 626 ENGINE STOPPED RUNNING [saeedabidi]
by bt100
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Nov 03, 2009 (1:39 pm)
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Replying to: saeedabidi (Nov 03, 2009 6:04 am)
I Own a 1998 Mazda 626 lx V6 automatic, I just purchased it 3 months ago in what I thought was great shape.. It has now began to have many different issues. First the check engine light stays on, then the RPM starts to go higher than before going up to 2500-3000 before switching. It felt like it was just delayed a few seconds more then normal. I then took it to mazda and they said the diagnostic was "PO400, EGR system flow malfuntion which may be plugged or open "was causing the engine light to stay on and that I need a new transmission to fix the gear switching issue. Now the brake light has started to come on when I stop, but the brakes are fine. Then I went to start it today and it felt like the starter was toast, (wasn't doing anything).........I tried it a few more times then it worked.....clearly alot of issues....can they all be related to the EGR valve? I really can't think about getting a transmission, and am needing some help with winter coming!!! Anyone???
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- #2475 of 2476
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Re: 1996 MAZDA 626 ENGINE STOPPED RUNNING [bt100]
by gyates
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Nov 08, 2009 (7:28 pm)
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Replying to: bt100 (Nov 03, 2009 1:39 pm)
As far as the EGR flow issue, this is a very common problem with these cars. It is caused by carbon build-up in the throttle body. There are 2 small ports that go to the EGR valve that get clogged and must be cleaned out by hand. You have to open up he throttle body to get to them. You will need to purchase a throttle body gasket before you do this, as you will destroy the one in place. They are cheap. Also get some throttle body cleaner to spray into the ports. Following is a link that explains it, including some pics: http://forums.mazdaworld.org/index.php?showtopic=13174&st=0
If the EGR is stopped up bad enough, it might be fooling your computer system and making the tranny shift higher, maybe. Were any codes present indicating a tranny problem?
If the timing belt has not replaced, I highly recommend getting this done. Do you know any maintenance history on your car?
Brake light could just be low brake fluid levels in the master cylinder. Check the brake fluid levels.
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- #2476 of 2476
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Re: Water does not flow from radiator to reserve tank [autobahn5]
by cliffmazda626
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Nov 12, 2009 (12:00 pm)
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Replying to: autobahn5 (Sep 21, 2009 1:20 pm)
you said the car is 15 years old and it overheated then maybe it's possible the head gasket has blown
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