Question about 1998 Mazda 626
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Posted on Jan 02, 2017
SOURCE: Timing Belt 2002 Mazda 626
re-install belt, lining up the timing marks, crank to TDC #1 cylinder, cma pulleys have marks on them, line them up to the index marks as well. If you have a drive wheel in the air, you can pop the car into 5th gear (make sure it's chocked!) and rotate the wheel to turn the engine for alignment, etc. You can put a wrench/socket on the cam bolt to align it as well.
Posted on Aug 08, 2008
Yes, this is most likely a thermostat problem.
As a basic explanation, the thermostat is the device which separates the hot coolant in the engine block from the cool coolant in your radiator. If it gets stuck closed, your radiator coolant will remain at near room temperature, while the coolant in your block (which is what your gauge reads) does not circulate and will skyrocket in temperature.
Posted on Aug 13, 2009
Testimonial: "Very helpful. Discription makes sense/logical explanation of symptoms."
My '91 626 did the same thing. I tested the throttle position sensor, and it was good so that wasn't it. The other likely culprit is the Idle Speed Control valve, or Idle Air Control valve, which is a $500 part new (more than I paid for the whole car). I pulled one off a 626 at the salvage yard and got it for 3 bucks, put it on (it's an easy DIY, just 4 philips screws holding it to the intake manifold), however I can't be sure that solved the problem, since I haven't run the car much since then. It would seem the most likely cause, tho, and a cheap fix if you go used. Other possibilities: O2 sensor or Mass Air Flow sensor?
Posted on Nov 28, 2009
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