Mechanics

MAZDA MPV ENGINE PROBLEM

2002 Mazda MPV • 140,000 miles

For some odd reason while standing outside and car was left running after driving 25 miles to my destination, the engine started revving up and down constantly. The fan came on and was quite noticeable. After awhile the engine overheated and anti freeze running onto the ground. I was completely stunned. Let it cool down and put water in it. Drove back home just in time before it started to overflow again. At this time temp gauge does not work and lights going dim. At night. Car would not start when I made it home. Problem continued every time I got into van. Engine revving up and down and overheating. Again would not start. Had van towed and was told alternator no good and battery tested ok. Eventually I got alternator fixed but could not use van until I did. The revving and stalling of the van stopped, ran better but still overheating with gauge still not working. When I asked that question here on this site back when I was told alternator would fix all these problems but not so. Heats good inside van. Will this be a problem with sensor controlling water flow due to engine temperature? I don't see leaks on pavement before overheating. Water pump? Radiator plugged? Thermostat? CAN YOU HELP ME. Very frustrated. Put 6-7000 $ in car and only paid 6000 when I bought it 3 years ago. My e-mail address is wolverineman69@hotmail. Com.
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February 1, 2013.




The overheating has me concerned. Have the cylinders leak down tested to verify the head gaskets are still good.

The original issue of overheating is still there. Could be thermostat. All needs to be checked starting with pressure test

as far as the guage, you need a shop with a scan tool to see if the computer can see the actual temp of the motor. It could be the sender or it could be the cluster

Roy



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