BulletMaker
NAXJA Forum User
- Location
- Cascades, WA
So for a while my 90xj has been giving me a ping right around 1750RPM and then again at 3500 RPM. It only does it when under certain loading conditions (usually going up a hill). Typically when it does this, I'll either back off on the throttle (it goes away) or I'll hit the throttle enough for it to down-shift at which point again it goes away.
I havn't really done a lot of debugging on this issue, mostly a lot of searching (most people seem to have more persistent issues than mine).
I am not specifically sure when the issue first cropped up, but I seem to think it started around the time I replaced the radiator. (this was a whole 'nother fiasco) but ever since it's been running cool ~185, I typically run a factory 195F T-stat in it, and with the previous radiator, it sat at a perpetual 200 unless I was really pushing it around.
The other annoying habit it's been giving me lately is with what sounds like a stuck lifter on cold startup. It doesn't do it every time, but some times it will sit there and give me a loud tick/rumble, if I gas it it goes away until some cold start again in the distant future. This could be the flex-plate bolt issue I've read about, but I'm not sure. Oil pressure starts low for about 2-3 seconds and then immediately comes up to about 60PSI (running 5W40).
I'm getting ready for my final smog inspection before it falls off (25 years!) so I kinda wanna start debugging things now, while the weather is still nice.
Also, what's the expected lifespan of an O2 sensor?
Other than the noise, and the ping (which kinda hurts performance going up hills with the loss in power) it still runs great and gets over 21mpg highway...
I havn't really done a lot of debugging on this issue, mostly a lot of searching (most people seem to have more persistent issues than mine).
I am not specifically sure when the issue first cropped up, but I seem to think it started around the time I replaced the radiator. (this was a whole 'nother fiasco) but ever since it's been running cool ~185, I typically run a factory 195F T-stat in it, and with the previous radiator, it sat at a perpetual 200 unless I was really pushing it around.
The other annoying habit it's been giving me lately is with what sounds like a stuck lifter on cold startup. It doesn't do it every time, but some times it will sit there and give me a loud tick/rumble, if I gas it it goes away until some cold start again in the distant future. This could be the flex-plate bolt issue I've read about, but I'm not sure. Oil pressure starts low for about 2-3 seconds and then immediately comes up to about 60PSI (running 5W40).
I'm getting ready for my final smog inspection before it falls off (25 years!) so I kinda wanna start debugging things now, while the weather is still nice.
Also, what's the expected lifespan of an O2 sensor?
Other than the noise, and the ping (which kinda hurts performance going up hills with the loss in power) it still runs great and gets over 21mpg highway...