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I supported Toymods
Location:
Sydney
Registered:
May 2002
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Broken Map Sensor Plug wire Melted My Cat
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Mon, 18 August 2003 13:12
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SX & GTI owners beware!
If your front/rear engine mount is worn out and ur engine rocks back & forth under throttle or gear changes, there's a good chance it is pulling hard on the plug that connects the map sensor to the wiring harness, putting strain on the 3 wires to the point where one or more will snap from the plug, If this happens, your air/fuel mapping will be out. the computer will get incorrect air flow readings and get the air/fuel mixtures wrong leading to backfiring into the airbox and unburned fuel getting into you exhaust(Catalytic converter), then the heat that builds up causes the fuel to burn and melt the cat, creating a blockage
Moral of the story, Don't do what I did and leave a worn engine mount untreated for about a year like I did. The whose disaster ended up costing me around $500 and I was lucky I was able to find the cause of the problem coz the auto electrician couldn't.
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