I've tried a few different things, but the bottom line is that when the RRC (a '90) is warmed up, it just runs rough until a O2 sensor misfires and then i'm stuck with the dreaded error 52.
I realized that there was a leak on the fuel line into the back of the fuel rail, and failing to source a new rubber line (with the male adapter on the end), I went back to a generic auto parts store and bought a set of ferrules
/olives and placed one into the connection and used a new hose clamp on the line coming from the chassis rail.
I closed the leak, but after running it for a while it still doesn't seem to run much better. I'm thinking it's not a fuel delivery issue. But a recent experience with my 'tin can' gets me to think about the EGR system. On my tin can, I actually had a gummed up EGR valve and cleaning that out with a brake cleaner seemed to fix that issue (otherwise the dealership would have probably changed $100 for a new EGR value, and another $100 in labor for something I just cleaned in about 30 minutes).
So, it gets me thinking. What could starve an engine of low air at idle, could it be a problem with the "idle air control" mechanism? When I first got the vehicle a couple of years ago, I remember thinking that there might have been a problem with that, so I took it off, wiped it down and replaced the washer. Hard a hard time replacing the washer, I'm wondering, if that replacement were too thick, could that cause an issue?
I just looked through the RAVE CD for "EGR" and it only finds one on the diesel, not the 3.9.
Any thoughts from someone? Thanks.
I realized that there was a leak on the fuel line into the back of the fuel rail, and failing to source a new rubber line (with the male adapter on the end), I went back to a generic auto parts store and bought a set of ferrules
/olives and placed one into the connection and used a new hose clamp on the line coming from the chassis rail.
I closed the leak, but after running it for a while it still doesn't seem to run much better. I'm thinking it's not a fuel delivery issue. But a recent experience with my 'tin can' gets me to think about the EGR system. On my tin can, I actually had a gummed up EGR valve and cleaning that out with a brake cleaner seemed to fix that issue (otherwise the dealership would have probably changed $100 for a new EGR value, and another $100 in labor for something I just cleaned in about 30 minutes).
So, it gets me thinking. What could starve an engine of low air at idle, could it be a problem with the "idle air control" mechanism? When I first got the vehicle a couple of years ago, I remember thinking that there might have been a problem with that, so I took it off, wiped it down and replaced the washer. Hard a hard time replacing the washer, I'm wondering, if that replacement were too thick, could that cause an issue?
I just looked through the RAVE CD for "EGR" and it only finds one on the diesel, not the 3.9.
Any thoughts from someone? Thanks.