I also took a look at the intake mani, there seems to be a wet spot at the wayy back near the firewall. Didnt smell like much but i couldnt tell where it was coming from. I topped off the coolant and will keep an eye on it its not my daily driver so its tough to spend time with it.
99 tahoe misfire, win some,lose some
- Thread starter Kenny
- Start date
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At this point. Im leaning towards replacing the fuel spider, but when i was back there it looks like the schrader valve cover was missing, anyone know of a way to tell if somethings been replaced? Would a leak at the very back of the intake mani cause a misfire on #2 cylinder?
Is there a reason why you mentioned this?
SunlitComet
OBS Jedi-Do Good
no i just ask unnecessary questions for no reason at all.
Well, zero help then.
SunlitComet
OBS Jedi-Do Good
guess so.
Sunlit, did you see this? Do i have the wrong impression of forums? Im not sure where the attitude is from ,but if anyone can actually be helpful instead of a dick its be great.
For the sake of being helpful and using the forum for its intended purposes..anyone thats run into this problem: im working on a plan of steps and diags. But, one thing to note. The closed loop and open loop cycling stopped as soon as i repaired an exhaust leak before the cats. Which doesnt make too much sense,considering the truck was up to temp. But hey, if you run into a weird issue. You gotta look at everything. I did replace my o2s as well, mostly because i was throwing the p0171 x code and oncee it threw a p0134 code. Not too expensive. About 50 bucks each from autozone.
SunlitComet
OBS Jedi-Do Good
i saw it. and i don't ask questions to be of no help. an answer to the question i posted would have been more helpful. no dickery intended. unless i think you won't understand a question and be able to follow thru with it i don't go into details of it just yet. it makes sense because you effectively changed the condition of the cats as seen by the post cats sensor and the pcm responded as per it programming.
I did answer. There is a confirmed P0302 code and a pending p0302. I guess it does make sense as far as it fixing the codes,however. Cycling between open and closed loop constantly? Even after being warm? Just nothing ive seen before.
Anyways, its been tough getting time to work on it. Ill probably start on it again this weekend.
SunlitComet
OBS Jedi-Do Good
that was not an answer to the misfire history. looks like this.
it is used to verify misfires and how bad they are to help determine their accuracy and by knowing how to read between the lines with other data can also help determining what components is malfunctioning.
you had just provided diagnostic trouble codes. there are some good books that explain this stuff if you want to learn more about it.
it is used to verify misfires and how bad they are to help determine their accuracy and by knowing how to read between the lines with other data can also help determining what components is malfunctioning.
you had just provided diagnostic trouble codes. there are some good books that explain this stuff if you want to learn more about it.
