SuperRoo
NAXJA Forum User
- Location
- London, UK (formerly OZ)
Now I realise there are several different ways of gauging emission results in different states & countries...
Over here in the UK, I passed on HC & Nox (no individual results given just a pass) but failed on CO. It is supposed to be <3.5%, mine was 8.31%.
Been reading up on all the latest Naxja gossip on this subject - 02 sensor is 2yrs old, started to think about the CTS. Never been replaced since i've owned it last 6years. Started checking online for a suitable replacement with pictures etc. Now here is where it becomes confusing...
The previous owner had changed the block to a later year HO, Not sure of the head -rocker cover is HO but all else is Renix - manifold etc. The knock sensor has been placed in the block and what I had thought was the CTS had been repositioned to the thermostat housing (like on HO models).
After checking the ACDelco catalogue, it seems that the switch I have in the thermostat housing could be the temp GAUGE switch. The jeep is in the shop at the moment so i can't just 'go and look' at it. I'll pop down there tomorrow but need my facts with me. If someone bodged this up, i'll need to find the wiring for the CTS. I have recently replaced the engine mount on the left side and I really did do a "spit and polish" on the drivers side when it was all apart, (show car shine) so i know there wasn't any wiring hanging around loose. If it has been cut-off or whatever, does anyone know what colour wiring I should be looking for? A photo of the type of plug I'm looking for would be good if possible.
Other than checking the manifold for leaks again i'm not sure what could give this high figure. I Seafoamed a few days before the test but saw no smoke exiting the exhaust manifold, just exiting the exhaust pipe.
Also, this model originally had a cat fitted, but was removed probably by the last owner since cats are not a legal requirement here till late1992. I bought another cat but haven't fitted it yet, the garage are a bit skeptical that it will make much difference
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1988 Cherokee Laredo 4.0Litre, 4WD Auto (Californian import)
Over here in the UK, I passed on HC & Nox (no individual results given just a pass) but failed on CO. It is supposed to be <3.5%, mine was 8.31%.
Been reading up on all the latest Naxja gossip on this subject - 02 sensor is 2yrs old, started to think about the CTS. Never been replaced since i've owned it last 6years. Started checking online for a suitable replacement with pictures etc. Now here is where it becomes confusing...
The previous owner had changed the block to a later year HO, Not sure of the head -rocker cover is HO but all else is Renix - manifold etc. The knock sensor has been placed in the block and what I had thought was the CTS had been repositioned to the thermostat housing (like on HO models).
After checking the ACDelco catalogue, it seems that the switch I have in the thermostat housing could be the temp GAUGE switch. The jeep is in the shop at the moment so i can't just 'go and look' at it. I'll pop down there tomorrow but need my facts with me. If someone bodged this up, i'll need to find the wiring for the CTS. I have recently replaced the engine mount on the left side and I really did do a "spit and polish" on the drivers side when it was all apart, (show car shine) so i know there wasn't any wiring hanging around loose. If it has been cut-off or whatever, does anyone know what colour wiring I should be looking for? A photo of the type of plug I'm looking for would be good if possible.
Other than checking the manifold for leaks again i'm not sure what could give this high figure. I Seafoamed a few days before the test but saw no smoke exiting the exhaust manifold, just exiting the exhaust pipe.
Also, this model originally had a cat fitted, but was removed probably by the last owner since cats are not a legal requirement here till late1992. I bought another cat but haven't fitted it yet, the garage are a bit skeptical that it will make much difference
____________________________________________
1988 Cherokee Laredo 4.0Litre, 4WD Auto (Californian import)