Question about 2000 Mazda 626
My car starts right up when the engine is cold and runs great. After the engine is hot (I drive 25 miles each day to work) and I turn the car off, it will not "run" again if I get back into the car within an hour (give or take). The engine starts but will not idle without my foot on the gas pedal. When I take my foot off, the car shuts down. I have had the car to my mechanic and we have been able to recreate the problem in the shop. However, there are no codes on the computer indicating that the car has a problem. We have replaced the mass air flow sensor and radiator to engine sensor, but the problem is still there. We don't want to start replacing everything... Any help would be greatly appreciated.
When the car is hot and will not crank have someone get under the car and TAP the gas tank moderately hard with a rubber mallet, if this helps start the car you have an intermittent problem with your fuel pump. If your not getting gas properly your problem will exist in your fuel system if you are not receiving a ecm code. So, it could be the pump, mass air flow, or injectors. I have replaced mass air flow sensors and received a damaged sensor or damaged it myself, but if you have a decent mechanic who knows what he is doing he can hook up to your computer and tell if it is your mass air flow.
Posted on Aug 01, 2008
I had a similar problem with my 626,what sorted it for me was to clean the crankcase breather tube on top of the rocker cover.The little valve inside this seems to stick but spraying some air intake cleaner (comes in an aerosol can) frees it out and allows the engine to breath better and so tick over evenly.
Posted on Jan 21, 2009
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Posted on Jan 02, 2017
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