1993 mx-6 cutting out

[herbie]

Hi:

Our MX-6 starts and runs fine till it warms up, then the engine dies (shuts down). Let it sit for 30 minutes and it starts right up and runs for a little while then cuts out again. Let it cool down etc etc etc.

Need help

Thanks
herbie

 

[xelderx]

Problems with coils are sometimes caused by heat. You can usually have the coils tested by a dealer. I believe the early 90's MX-6 had problems with distributors as well, but I don't think heat would be a factor there.

 

[herbie]

mx-6

Thanks xelderx:

Will check it out.
Any other ideas while were are at it.

 

[xelderx]

Check for leaks around the intake manifold by spraying carb cleaner around the gaskets and vacuum hoses while the car is running. If the idle changes then there is a leak there.

 

[randyscycle]

You need to determine if its fuel, or ignition related first. As soon as the car dies, check and see if there is spark at the spark plugs. If so, then move on to the fuel system. See if there is fuel pressure. Is the fuel pump running? Once you've isolated it to the particualr system, then you can go into more detail.

If its a heat related problem, I'd go looking around the distributor pick up/module, or coil. A quick "wiggle test" of all the connectors while idling is a start, to see if you can make the problem show itself. Beyond that, you'd need a service manual, and a Volt meter to do a few tests.

 

[kcbhiw]

Perhaps the IAC valve is either gummed up or on its way out.

 

[herbie]

Thanks for your help
We will be doing some checking today

Herbie

 

[alphanumeric]

dont forget to check your TPS and throttle body, and MAF/VAF that might cause it too, is it a FS or KL ?

 

[Inspector 24]

Should this be a KL (V-6) the most common cause of these symptoms is a faulty ignitor module inside the distributor. The ignitor being the part that triggers the coil to fire the spark plugs. When they go bad they will do thust this, quit working when the get hot.

One of two options, replace the internal ignitor with an external non-Mazda one, or the better option replace the distributor, as the individual parts are no longer available.

Ryan

 

[herbie]

Thanks Ryan

Think we'll try the external conversion.
Wish us luck

 

[Inspector 24]

Search around ProbeTalk.com, there's lots of info, diagrams and pictures available to make it a lot easier.

Good luck

Ryan

 

[herbie]

We're done and it worked great--had a little trouble with the right wires at first.

Search around ProbeTalk.com, there's lots of info, diagrams and pictures available to make it a lot easier.

Good luck

Ryan

 

[Inspector 24]

Awesome!! Drive and enjoy!!

Ryan