Mazda mpv 2003 will not start, no codes, will run if throttle is held, but runs rich, and rough.

SOURCE: the fan motors keeps running after car is shut off. Also sometimes fans start when car is started cold.

If the fans didn't run any further the engine continues to warm and possible seizure will occur. This is also the reason you will probably go through batteries in the long run. Hopefully this helps the issue you are having.

SOURCE: 98 buick park ave, hard to start, run's rough. po172 code

oxygen sensor in exhaust

SOURCE: 2003 Mazda MPV ES that idles very rough when warm

that means could be vacuum leak

SOURCE: 2003 Mazda Tribute will start, idle rough for a

check the fuel filter air filter and vacuume lines if they all good make sure the spark plugs are making a bright blue spark

Dave C

• 1050 Answers
• Posted on Feb 22, 2010

SOURCE: 1998 mazda mpv code p0170 erase code car runs fine

This code indicates a fuel ratio problem. I would start by inspecting all the vacuum lines, including the pcv hose and power brake hose. Carefully inspect the air intake hose. This is the large hose between the throttle body and the airflow meter. If this hose is cracked or loose the computer will not sense how much air is being drawn into the engine and it will be hard to start.

Testimonial: "i will look for a leak thanks so much for your help. I will let you know what I find"