thetick
NAXJA Forum User
- Location
- Syracuse, NY
Ok, first let me appologize about the length. But a long time ago my zj quit at the same time that my xj (90 wagoneer) had leaky fuel injectors. So in order to get one running vehicle I swaped the fuel injectors form the 93 zj 4.0L into the xj. It was rainy and cold so I just put them in and called it good, no more leak and it ran fine, great in fact. My GF has been driving it daily for a few months now and was complaining about the mileage she was getting, and it not warming up very quickly. So I have been driving it for a week now to see whats up and I got about 8mpg on the last fill. She also just recently blew the exhaust system off of it. I think all the excess fuel plugged the cat and the pressure just blew it off. I now have a new exhaust system from the cat back. I had switched to the open cooling system a year or so ago.
Any way here is a run down of the symptoms. It runs really smooth, but idles a little low (between 500 and 600rpm when in gear but fine, like 800 when in nutral). There is a lot of moisture on the ground where the tailpipe ends, dosn't smell like gas though. It has a new TPS and IAC motor. I don't hear any vacuum leaks and I havn't been able to detect any with the propane test. I haven't been able to test fuel pressure because I don't have a guage. I am going to get one thursday though. I just put a new fuel pressure regulator on and it made no difference. Temperature wise it only gets to a little over the first line, probably only about 180deg. And it eats fuel. I don't have any check engine light. I figure I'll get a thermostat for it. It's pretty cheep and can't hurt. So any ideas what may be wrong.
Thanks,
Any way here is a run down of the symptoms. It runs really smooth, but idles a little low (between 500 and 600rpm when in gear but fine, like 800 when in nutral). There is a lot of moisture on the ground where the tailpipe ends, dosn't smell like gas though. It has a new TPS and IAC motor. I don't hear any vacuum leaks and I havn't been able to detect any with the propane test. I haven't been able to test fuel pressure because I don't have a guage. I am going to get one thursday though. I just put a new fuel pressure regulator on and it made no difference. Temperature wise it only gets to a little over the first line, probably only about 180deg. And it eats fuel. I don't have any check engine light. I figure I'll get a thermostat for it. It's pretty cheep and can't hurt. So any ideas what may be wrong.
Thanks,