With the help of a mechanic at a shop with a sniffer I was able to test my CAT and determine it was bad. After the engine and CAT were warm, he pulled the input wire from the distributor. First turn of the cruiser or it will back fire bad. Then he cranked the engine and watch the CO reading on the sniffer.I forgot what he said was a bad number but I will ask him and add it. By watching the CO reading, he told me my CAT was bad. This is a guy that owns and has been drving Toyota trucks for a long time.
I ordered up a new aftermarket CAT from:
http://www.discountconverter.com/
It was $135.14 + $10. shipping=145.14. Talk to Fred if you call he was very helpful and knowledgable about CATS and emissions.
The old CAT was not too bad to get off. Spray some PB blster on the bolts and let them soak. I just got a big breaker bar and broke most of the bolts when unloosening them.
The CAT bolted up fine but I had to trim the output pipe since it was too long and would not slide in the CAT. I bought 6 new 3/8" bolts with washers on each side and locking nuts. The CAT came with a ferrel and nut which allowed the thermal sensor to bolt right up on the CAT. It came with 2 gaskets for the ends too.
The thermal sensor read "open" on my meter at room temperature. The FSM says it should read 2-200K ohms. It does not say what temperature the CAT is at this reading. I hooked up a meter to the leads and lite up a propane torch and started to heat it up good. The meter went from "open" in a few seconds to like 500M ohms and started to go down fast as I held the torch on it. After about 2-3mins, the sesnor was reading 200K ohms.I turned off the torch and within like 30 secs it was back to reading an "open". It seems like it is working but with the torch that is pretty hot. I wonder if someone else can do this and so we can compare numbers? Also if anyone else thermal senor reads 2-200K ohms like the FSm says at room temperature.
The new CAT is small compared to the OEM one. It has a arrow on the bottom to show the direction.
Hope this helps and please add any information I left out.
I ordered up a new aftermarket CAT from:
http://www.discountconverter.com/
It was $135.14 + $10. shipping=145.14. Talk to Fred if you call he was very helpful and knowledgable about CATS and emissions.
The old CAT was not too bad to get off. Spray some PB blster on the bolts and let them soak. I just got a big breaker bar and broke most of the bolts when unloosening them.
The CAT bolted up fine but I had to trim the output pipe since it was too long and would not slide in the CAT. I bought 6 new 3/8" bolts with washers on each side and locking nuts. The CAT came with a ferrel and nut which allowed the thermal sensor to bolt right up on the CAT. It came with 2 gaskets for the ends too.
The thermal sensor read "open" on my meter at room temperature. The FSM says it should read 2-200K ohms. It does not say what temperature the CAT is at this reading. I hooked up a meter to the leads and lite up a propane torch and started to heat it up good. The meter went from "open" in a few seconds to like 500M ohms and started to go down fast as I held the torch on it. After about 2-3mins, the sesnor was reading 200K ohms.I turned off the torch and within like 30 secs it was back to reading an "open". It seems like it is working but with the torch that is pretty hot. I wonder if someone else can do this and so we can compare numbers? Also if anyone else thermal senor reads 2-200K ohms like the FSm says at room temperature.
The new CAT is small compared to the OEM one. It has a arrow on the bottom to show the direction.
Hope this helps and please add any information I left out.
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