Hi all,
I've been lurking around here for a while. Back in September I picked up a 95 FZJ80 in CO Springs (150K on the OD, but a OD discrepancy on the title), and have been slowly working on it to turn it into a camper for a road trip. So far I've really only removed the interior and sound deadening, put in new drive belts, and replaced leaking power steering hoses/flushed the PS system. I also had a small coolant leak, and have a new radiator, heater hoses, water pump, and fan clutch to install this week. I dont have a garage, but it's going to be 60 here in Boulder on Tuesday, somehow.
My temp tags were set to expire, so I took a gamble and got it emissions tested despite all the work I wanted to do. It failed for high NOx (6.4 average). Just wonder where people think I should go first.
My understanding from all the lurking is that elevated NOx is from high cylinder temps. Any reason to believe that the cooling system overhaul would make a major dent in NOx? Wouldn't that be a treat?
Most commonly successful fix: new cats. (But $$$)
Usually tried before new cats: O2 sensors, EGR valve check, VSV check, new vacuum lines.
Usually used to squeak by: fuel additives, getting the cats hot-hot-hot on the highway, "sending thoughts and prayers."
(OH and PS yes, obviously I should have gotten a smog check from the PO. I hadnt bought a used car in a while and clearly should have brought a checklist with me, because I got too excited while test-driving, and remembered literally as I was driving away in the truck. Like an idiot.)
I've been lurking around here for a while. Back in September I picked up a 95 FZJ80 in CO Springs (150K on the OD, but a OD discrepancy on the title), and have been slowly working on it to turn it into a camper for a road trip. So far I've really only removed the interior and sound deadening, put in new drive belts, and replaced leaking power steering hoses/flushed the PS system. I also had a small coolant leak, and have a new radiator, heater hoses, water pump, and fan clutch to install this week. I dont have a garage, but it's going to be 60 here in Boulder on Tuesday, somehow.
My temp tags were set to expire, so I took a gamble and got it emissions tested despite all the work I wanted to do. It failed for high NOx (6.4 average). Just wonder where people think I should go first.
My understanding from all the lurking is that elevated NOx is from high cylinder temps. Any reason to believe that the cooling system overhaul would make a major dent in NOx? Wouldn't that be a treat?
Most commonly successful fix: new cats. (But $$$)
Usually tried before new cats: O2 sensors, EGR valve check, VSV check, new vacuum lines.
Usually used to squeak by: fuel additives, getting the cats hot-hot-hot on the highway, "sending thoughts and prayers."
(OH and PS yes, obviously I should have gotten a smog check from the PO. I hadnt bought a used car in a while and clearly should have brought a checklist with me, because I got too excited while test-driving, and remembered literally as I was driving away in the truck. Like an idiot.)