athensrx7

about 2 months ago the overheat exhaust light came on and has not gone off, im not sure where the sensor is and how to get the light to go off any tips or suggestions would be great.

Vashner

Stock system? If so probably clogged cats & muffler.

4portgsl

The sensor is located on the driver side of the connecting pipe that runs between the main catalytic converter and the muffler. Its a probe that is held in the pipe with two bolts. You could probably disable it without too much difficulty, which should turn off the light.

djessence

But the real question is WHY is it on. Troubleshoot that first.

4portgsl

Is the light always on? if it comes on right from startup then there is something wrong with the system?

mazdaverx713b

iTrader: (91)

if the system checks out ok (which it may not due to a faulty sensor or wiring), unplug the connector for the exhaust probe. the connector can be accessed by removing the driver's seat and peeling back the carpet.

2GSLSE

iTrader: (6)

I have seen this before on a friends 82 rx and the fuse was blown (we found it AFTER we tore the car apart) there is a small emision box on the drivers side and it has a small glass type fuse holder we replaced the fuse and everything started working again including his shutter valve.

mazdaverx713b

iTrader: (91)

that makes no sense on the shutter valve working, as its vacuum operated...and the buss type (glass) fuses were only used on SA's (79-80)..either way, glad your friends car is working again!

athensrx7

yes its a stock system, and its comes on from the time i start it, im hoping to change the cat sometime soon. But i want to make sure what the problem is. thanks for the advice every body

4portgsl

Ok, then there is a fault in the system. There likely isnt a fault in the exhaust, especially if the car is running good and all the other emissions components are in place.

Touring

iTrader: (1)

where is this?

13x

Touring sounds like you may need this click here

This info has been compiled by others who make it available to the rest of us

Touring

iTrader: (1)

Thanks 13x.