distributor numbering/ O2 reading

[sy2478]

could someone post a pic or send one to my email of the # order on the cap. speedracer1280@yahoo.com

also I recently bought a sy and it had a few problems. I've done a tune up. wires, ac spark plugs, fuel fiter and cap rotor. the drivers motor mount was also broke. thing is the truck launched hard but nosed off after 30 or 40 mph. some of you suggested the cat was clogged and the motor mount could be tripping the knock sensor.

well fixed both of those last night...what a pain the motor mount was. on the way home it ran hard...like never before...it was like the speedometer was in a race with the tach.

now the truck seems to have developed a small miss, Its kind've had it always...only noticable at idle. when driving cant tell and still drives ok...bad gas mileage though. the previous owner gave me a moniter 2000 pathfinder scan tool...tonight for the first time hooked it up...It shows a code 45...rich O2...the mv was bouncing all over the place..from .08 up to .89...and in between. Did not have this last week checking the codes with the paper clip method.

How much would the rich o2 affect idle...should i replace the O2? the vaccum on the upper intake checks at a steady 20 inchs.

The truck has 78k miles and is basically stock...atr pump and intercooler, adjustable fuel reg. , a chip ( unknown type ) just told by the owner and still have the OEM chip. also there has been since purchase a loud ticking from the passenger side...I assumed it was a sticking lifter. as the guy didn't drive the truck much..with an oil change and running B-12 through it to clean out some sludge...it never went away...I now think it may be a bad injector???
sorry for the long thread . but for a good answer thought you'd need details....thanks

 

[sy2478]

Re: distributor numbering/ O2 reading

No one has a diagram of the distrubutor...anybody want to sell me one injector?

 

[TYTILIDIE]

Re: distributor numbering/ O2 reading

Injector tick on a normal basis. They say you can loosen the fuel rail and bring it up just a pinch and the noise will go away. Ive never tried it though. As far as firing order, its 165432. Best way to tell which one is #1 with no wires is to get the motor to TDC, take off the cap and see where the rotor is. It should be facing front leftside of hte truck. So if you were looking at it from the top and you were sitting right over it, it is usually ends up as the bottom right post. I have some stock injectors Ild sell ya but I dont think thats your problem.

 

[sly dvl]

Re: distributor numbering/ O2 reading

the previous owner gave me a moniter 2000 pathfinder scan tool...tonight for the first time hooked it up...It shows a code 45...rich O2...the mv was bouncing all over the place..from .08 up to .89...and in between. Did not have this last week checking the codes with the paper clip method.

How much would the rich o2 affect idle...should i replace the O2? the vaccum on the upper intake checks at a steady 20 inchs.

Your O2 sensor is supposed to bounce all over the place. It's called "O2CC" on your Monitor, or O2 Cross Counts. The amount of times the voltage crosses the .45V mark. The higher the CC's the better, for economy.

Take a screwdriver and place your ear to the handle and the other end to the suspect inj. area. Then compare that to other inj.'s.

 

[sy2478]

Re: distributor numbering/ O2 reading

good...I'll try that tommorrow...If that doesn't do it , whats a good upgrade for a basically stock motor?

 

[TYTILIDIE]

Re: distributor numbering/ O2 reading

whats a good upgrade for a basically stock motor?

Honestly, do yourselfr, and the rest of us, a favor and learn about your turck first. You'll expect too much out of something and sell it because you didnt do it right. Trust me, I see it all the time. Even if you know a lot about "cars" I can garantee you the info is not totally applicable on these trucks, start diggin in and you'll see what I am talking about. Its not like any other turbo car so dont think that way and there is really no magical bolt ons you can do with out some kind of tuning. However, a cheap and pretty decent way is the Jwaller 57mm stock turbo upgrade. I had it on my turck for two years and loved that thing, no bigger injectors needed, I used stock FPR and chip and my truck just ran awsome. Also you will wnat to hotwire your IC pump just to be safe. If your IC is not working, getting it to work will make a huuuge difference. Ild also do a nice exhaust.

 

[Flyin Ryan]

Re: distributor numbering/ O2 reading

http://www.whitetyphoon.com/firing_order.html

from the factory these trucks had kind of a rough idle due to emissions reasons..... I would crack over the ecm and check out what chip you have... these trucks had a bunch of bad aftermarket support in the 90's.. by that I mean Kenne Bell produces chips for these trucks that were horrible and were later nick named "ka-boom" chips, hypertechs were crap as well so in short these are touchy machines and with the wrong chip/calibration you could have serious head aches. here's a old write up on the chips http://www.syty.org/old/promguide.html

here's an old write up on some minor upgrades but like stated above... get your truck running right first or else adding an upgrade will only help the issue you never fixed show/happen more
http://www.syty.org/old/modlist.html

like I said that list is very dated... but gives you an idea... best thing to do is read all you can on this forum, ask questions and see if you can find someone local on here that can scan your truck to see how it really is running before you change anything

 

[sy2478]

Re: distributor numbering/ O2 reading

all that info is great...excactly what I needed...

and when I asked " whats a good upgrade for a basically stock motor" I meant from the factory injectors. I've decided that the Oe I would buy from someone are still 16 years old so I will just buy a set of "new" replacements...also i thought about going with a few extra pounds. reason being I know on my 99 Ta the injectors are not far from being maxed out with a few mods.