BulletMaker
NAXJA Forum User
- Location
- Cascades, WA
I don't know exactly what it is, but when you baby a jeep, you're asking for trouble... A few weeks ago I did a massive fluid replacement on the heep, trans, oil, tc, front and rear axles, coolant, etc.
I also did new plugs (autolite, IIRC), new cap, rotor and wires.
Since then however, it's been somewhat moody at me, cleaning the throttle body, IAC, and the IAT (the temp sensor on the manifold), hasn't really done much, adding a few oz of MMO to the fuel hasn't really seemed to do much to clear up the rather obnoxious idle (it seems to be rattling something, not sure what). However one of the most pronounced issues has been a rather persistent fuel odor coming from the back, and highway economy dropping from the usual ~20mpg to a less than steller ~12-15.
While racking my brain trying to come up with some ideas to work through this issue, I'm thinking O2 sensor (perhaps fuel map is defaulting to open), fuel injectors are clogged, having other issues, and with 260K on the clock, it seems spending a few hundred on new injectors wouldn't be imprudent.
I also need to take a drive down to southern cal in the next few weeks, and at present, the mileage recovery from the injectors would more than make up for $$ spent on it.
So, the principle questions are:
1) Is it worth replacing the injectors, and if so which provide the best ! for the $. The best info I've found on this is some terse references to dodge neon injectors *703. Is this dealer only, or will napa have it?
2) Obviously O2 sensor testing is in order, any idea if this could be contributing to the problem?
3) In a previous post, I was having a low idle/rough idle/intermittent that was frequently causing cut-outs, it ended up being the IAT mentioned earlier being dirty and requiring cleaning. Is it too clean?
4) Is there something I'm forgetting? Is it worth going to a different spark plug, or any other upgrade I could make here that would deliver better economy?
I also did new plugs (autolite, IIRC), new cap, rotor and wires.
Since then however, it's been somewhat moody at me, cleaning the throttle body, IAC, and the IAT (the temp sensor on the manifold), hasn't really done much, adding a few oz of MMO to the fuel hasn't really seemed to do much to clear up the rather obnoxious idle (it seems to be rattling something, not sure what). However one of the most pronounced issues has been a rather persistent fuel odor coming from the back, and highway economy dropping from the usual ~20mpg to a less than steller ~12-15.
While racking my brain trying to come up with some ideas to work through this issue, I'm thinking O2 sensor (perhaps fuel map is defaulting to open), fuel injectors are clogged, having other issues, and with 260K on the clock, it seems spending a few hundred on new injectors wouldn't be imprudent.
I also need to take a drive down to southern cal in the next few weeks, and at present, the mileage recovery from the injectors would more than make up for $$ spent on it.
So, the principle questions are:
1) Is it worth replacing the injectors, and if so which provide the best ! for the $. The best info I've found on this is some terse references to dodge neon injectors *703. Is this dealer only, or will napa have it?
2) Obviously O2 sensor testing is in order, any idea if this could be contributing to the problem?
3) In a previous post, I was having a low idle/rough idle/intermittent that was frequently causing cut-outs, it ended up being the IAT mentioned earlier being dirty and requiring cleaning. Is it too clean?
4) Is there something I'm forgetting? Is it worth going to a different spark plug, or any other upgrade I could make here that would deliver better economy?