Ok... Here I go again with another novel, if anyone remembers my post last week I just redid most of my motor in my 94 22re. Got it all back together had some issues, Anyway long story short, Got it running and took it on a 700+ mile trip to Carlisle All Truck Nationals the next morning, Did great for the first time in 8 months with only a few flaws, Noticed a few things though. #1 smokes on start up, thinking valve seals. #2 If it sits idle for sometimes just sits. It stumbles, almost like its loading up, one good rev to clear it out and its fine. And new problem on the last 2 days. Couple times when I press the clutch in the come to a stop it will idle at like 2000 rpms, till I blip the throttle one time, and it comes on down. Kinda mades me think TPS, and then today it throws a code 25. Which confuses me, since 25 means lean and it seems to be loading up. Also think theres a chance I killed the o2 last week when I had all my problems trying to get it to start. Any ideas or advice?

Heres to link to my previous post for insight on what all I have replaced
https://www.yotatech.com/forums/f116...e-12-a-187950/

 

Anyone?

 

Well I think if you killed the O2 sensor it may be thinking it running lean so then it dumps more fuel...Just a thought.
The dashpot maybe sticking keeping the idle up or the TB

 

Took the dashpot off just to see what it does today, will post results

 

The oil leak prolly fauled the o2 a little bit it might fix if changed. It sounds to me like your idle speed is not set properly. It should be aboud 750-800 but anything less than 1000 is ok. Hows your timing? It maybe a bit on the low side advance it a little bit. No more than 12BTDC. Dirty air filter from your trip? Throttle seems to be sticking. a simple cleaning of plate may help.

 

Idle speed is perfect 99% of the time, sets right about 850, and a little lower when the e-fan and compressors are running even with 170 amp alternator. With the dash pot off completly idle only stuck on me one time, and a simple tap on the gas and it idles normal, still got stumbly on me twice, both times after it was shut off for a short time, (ie running into walmart real quick) But as usual rev it and clear it out one time and it seems fine, I also noticed tonight there was what looked like a wet spot on the pavement next to my truck,(exhaust is side exit and kinda points down) when I started it up and let it run about 3-4 mins to build up air (Got switch happy before I parked it) Need to check timing, last day before the trip I thew another dizzy in the truck trying to touble shoot, and set it by sound, like I said this stuff only happens a few times, Most of my 80 round trip commute every day is fine. Air filter is nice and clean, Its got an intake on it so its a cone filter. Next day off is Tuesday Im gonna try and clean the tb and make sure nothing is sticking, Cant afford a new o2 right now, might get the one off my 93 parts truck and give it a shot. Also the check engine light went off today. And hasnt come back on in 80 miles. Anything think my somewhat short exhaust could cause a problem? I guess with the bends in it its really not that short

 

I'm having the same issue.. ( I think, the tech @ Emissions place said I was running lean ( explains the high CO, and that the high Nox reading is a result of a slightly high op temp ) except I can't get the diagnostics box to throw any codes at me.. I'm almost certain I'm doing something wrong, but Shorting pins and stuff is something I'm super familiar with..so I can't figure out what I'm doing wrong. :-/

( The truck failed emissions, that's why I'm freaking out about this.. I'm supposed to leave in 2 weeks, and without getting it through emissions, I can't register the damn thing, and if I can't register it, I can't freaking insure it. )

I replaced the Cat back in January after someone stole mine ( I had some choice words that morning )

I'm wondering if the cat failed, or if it's a bad o2 sensor, and if there is anything I can do to uhh.. tweak it enough so it passes next time and get's me by until I can do some serious work on it in Indiana.

 

My problem is my truck is telling me via codes that Im running lean, But it seems to actually be running rich

 

Oops... my bad. Mine must be something different then.

My CEL is on, but I can't get it to give me codes by jumpering it. I dunno what the deal is. :-/ ( I know I have a bad o-ring at the top of the front injector on the drivers side, so I suspect that's my problem ( especially since it passed emissions with FLYING colors all the times it was tested before I bought it )

 

Shortyz, change the O2 sensor again. In my experience, every time my Toyota's have thrown a code 25 a new O2 sensor has fixed it. Get a new OEM Denso and you'll be good to go.

 

Thank you thats the kinda info Im lookin for! My gas mileage is AWFUL right now, and Im daily driving the bagged beast till I get my new daily tagged and cleaned up. Im a manager at Autozone and we sell Bosch o2 sensors, looking like $100+ before my discount... Who sells the denso o2s and whats the price range

 

Sparkplugs.com


I actually just ordered one for $77 shipped.

 

Thank you! Im really thinkin o2 now, its just running rich and burning a helluva lot of gas. Looks like this weeks check is a new o2! Even though the cheapest one for my 2wd was like 85+ on there