check the ignition timing, its probably not the problem but it never hurts to check. I also think its the cold start injector if it runs fine when cold but crappy at higher rpm. also, it seems to me somebody screwed with the air flow meter if there was black rtv around the adjustment screw. Moisture can destroy the electronics inside the air flow meter so that could be a possibility as well

 

You will find the FPR under "Fuel Distributor($misc. Injection)

 

Ok, ..........I might have some good news in the next couple days.

Remember the yard I went to in Fontana, where it took me 6 hours round trip due to accidents, only to find that EVERYTHING THEY HAD WAS JUNK??? Well, the owner of the yard that sent me there felt so bad because they did me wrong out there, that.........HE GAVE ME A HECK OF A DEAL! 100$ bought me, .........

* Working SR5 Gauge Panel(my Temp gauge is giving up, so is the oil pressure)

* Working and Functioning Throttle Body with Dashpot/Tps and low-play linkage

* Working CSI Time Switch

* Working IACV

* Working Fuel Pressure Regulator

* Working VSV's, BOTH!

* Brand New EGR Modulator

* and last but not least, ......A WORKING HIGH TECH 92 TOY STYLE OIL CAP! hahahhaha.....I'ma have to read his thread to get the installation correct...the removal was A NIGHTMARE! hahah. jk, jk, sorry.

This was all off a ROLLED 87 SR5 Pick up that was PURRRING, recently rebuild and idling right at 750 on the dot!

...........We'll see what happens, but when a guy calls you feeling badly and GIVES YOU A STEAL, ...you GO WITH IT, EH? hahaha. I'll get pics, later, and I was hoping Flicker could weigh in so I could see what he thinks and what he thinks I should do.

I'll update asap, guys, but DANG I'm busy right now.

PS> Flecker, .....having any withdraw for Dark Chocolate Covered Caramels? hahahaha. Poor guy, I think I'm getting him hooked on some things....GOOD THING THOUGH, right Flecker? lol Seriously, I wanna know what you think and I'd love to hear from you via phone if you have time anytime soon.

Thanks guys,

Mark

 

Chef.....that, right there, is karma in action.

good deal bro.

good luck with the oil cap install.....i wish i had done a better job with the write-up, but it took alot out of me to complete that job.

work tomorrow, so i will catch ya later or tomorrow night.

 

Way to go Chef!!!! Great find there!!! I'll be waiting with to hear her run...again.

PS. I'm out all day tomorrow, well most of the day, and most of the day Sunday. Boy has soccer games all weekend.

 

Yeah Jerry, Lumpy, .....

VERY STOKED! However, ....GUYS?...anyone I mean, lol..........

Ok, while Flecker was over helping me the other day, suddenly my oil pressure gauge started reading very low. Now, having the gauge right below it give me crap for the last 4 years(I've always had to rap on the dash below the gauges,....I KNOW, I KNOW, lol) ....ANYWAY, having the temperature gauge give me issues for so long, I just figured, "ahhhhhh, it's the gauge, not oil pressure".....HOWEVER, ...when I came home tonight, I noticed that I had a couple oil spots on the ground. Nothing seemed to be leaking from the pan, nor the filter, but looking at the Oil Pressure Sender, ....right below it, .... it appeared to have a lil fluid along the oil pan seam just 2 Inches to either side, ....yet again, like I said, nothing really dripping off the pan. I've been running this engine for days, off and on, to test it, and about 30-40 miles now, and I've never noticed a drop in my garage until tonight, when getting back from getting the parts(might not be a coincidence that the oil pressure seemed REALLY low by the gauge reading, as well, eh? It seemed to come up, but not QUICKLY, more gradually--bout 3-4 seconds from near bottom to half way mark where it should be. The WHOLE way there and back, it seemed ok, UNTIL I got near home again. Even when I'd race the motor up a lil, holding it around 1800 rpm, it didn't seem to want to come up....then about a minute later, it had risen again and was holding at idle. Sorry for the long story, but I'M CONCERNED!

Could it be that, ......The Oil Pressure sending unit, because of the new build and much higher pressure(also the new dipstick which is TIGHT AS HECK, ....the orig. was VERY loose) that the Sender is just taking a dive? GOD I'M PRAYING this is not something more serious! When I first installed it, starting it up, it was leaking a lil, so I tightened it down some more and it seemed to stop. it's just that, having lost what seems to be almost a quart in about 1hour of idling and 40-50 miles.....WELL, IT'S SCARING ME! lol.

I read a thread on here and saved a picture that tells you if the sender is working or not. However, I don't think I can get it much tighter without risk of stripping it out. Is it possible that, if it was wearing out, it could leak from the body itself?...thus, I don't see oil on top of the transfer case but I do on the bottom?(Dripping out of the sending unit only when under pressure)...or can the think even leak other than out of where it threads into the block????? I didn't even think about it when at that truck today....I could have got that one for a couple bucks. Maybe he'll still have it in the morning....Along with the BVSV and a couple other things I meant to get while there. Anyway, PLEASE CHIME IN if you have any clue on this?

 

Well geeze man, I donno know.
A quart low in that lil bit of running is quite a bit. But with the different dipstick are you sure its the same length?

I wouldn't think that it would be leaking from the threads. Yes I'd think that it could leak through the body of the sending unit. I don't recall what is actually inside one of those.

 

was there oil anywhere else, as in could is be spraying out of a leak in the sending unit, causing high loss of oil, and a lower pressure reading because the pressure is venting out to atmosphere instead of reading properly?

 

I'm so confused... I don't know what's going on anymore, lol

bet of luck; hope your good luck at the junk yard pays off

 

Lumpy, Dewit, Bleeder, ....

Lumpy; The dipstick is brand new OEM, Dealer # blah blah blah...it's an extra my buddy had who works at toyota and who has THE EXACT same truck as me.(and no, he wont let me swap parts to try things, hehehe). IT IS slightly shorter, BARELY(1/16th-1/32nd of and inch??) , but not enough to make up for the oil loss(Read next paragraph)

CORRECTION; It had been sitting for quite a while last night, but it is NOT a quart low, ...more like 85-90% full(about 1/8th of an inch from the top)....which could be negligible.....BUT I DOUBT IT, as anal as I am. However, I will work on getting it topped off and go from there.

Dewit; I can't seem to find ANY good info on the 'how it works, internally' regarding the Oil Pressure Sending Unit. Nor can I find out if it's possible for it to leak. When I touch around the threads, between the flange-nut and block, I DEFINITELY have oil on my finger afterward. The reason I think it's from that, guys, is because there is NO oil above it, under the filter, and yet there is oil below it, and even ON the threads. Here is a picture of when I took it out to avoid damage when removing the motor, etc. ....



The pic from the bottom-view, I can't really conclude anything, mainly because the motor was LEAKING LIKE A PIG, lol! This thing was COVERED in oil, top, bottom and sides...every nook and cranny. When I reinstalled it, after cleaning it off a bit, IT WAS LEAKING from the threads.....then I tightened it up a lil bit and left it alone as it didn't appear to be leaking from the thread anymore. However, I do believe that the previous dip stick, being totally loose, DOES make a difference in oil pressure, NO? So, whether it's caused it to finally give or or whether it's still fine, I have no idea. What I do know is that there IS OIL coming from the Sending unit itself. I went out last night late, looked at the pan seam and it's possible that it's leaking, TEEEEEEEENy bit, but I still think it's the sender, because it's NOT ON THE LIP OF THE PAN, not on the bolts, not underneath the pan(on the sheet metal skid plate thingy? lol) ....so I just don't know. Also, the oil on the front axle(diff? Sorry, I'm lame in that stuff still...what is that called right below the filter standing above? Front driveaxle?)..on that<<< haha, underneath, it's got oil....but THE AXLE could be leaking, itself. I can't seem to find a SINGLE DROP on top that would then leak down to where I'm finding it on the drain plug bolt on the axle!

BLEEDER, DUDE, ....ARE YOU SERIOUS? lol..... I actually was in google and found that yotatech thread on the guy who thought his sending unit or oil pump was bad, due to low oil pressure. Seemed to be an unfinished thread....because he went off a cliff or something, ahhaa...then exhaust leak, etc., etc.

Anyway, any help on this would be appreciated....but I found in that thread bleeder commented on,.... this picture.........

 

Anyone know where I could get that test bulb, above? ^^^

 

Hey man-

It's a new build! You are gonna have some oil leak by the rings until they seat. Trust me, that is normal.... still monitor your oil though.

The sending units can die, I think yours is fine though. To have threads leak lets some of the pressure by that it is supposed to be gauging.

It's a brass fitting and typically teflon tape is not needed. The gauge itself, I haven't seen them fail internally- doesn't mean it can't happen. Try a little dope on the threads first if your sure that's where it was leaking from.

You could pullthe retaining ring on the sender rubber housing for a better look- verify it isn't leaking there.

 

Thanks Flecker, What about the FSM test with the 3.4w Bulb?

Oh yeah, .....parts porn, lol.....

 

Just get a light socket (cheap one) and a bulb from vauto-zone, wire it up inline or use those snazzy gator clips you got!


Nice score on the parts!!!!!!

 

The fpr/ iacv and t-body would be first on my list! Oh hell- all of the parts should get cleaned and installed!

 

HAHAHAHA! Not the VSV? I thought you didn't like the results on that test? Actually, both of them, lol. I mean, it is sucking vacuum(the rear VSV) but maybe it's not switching, right? Can't remember, but you said you were gonna check something you had on that? Either way, trust me, I AINT COMPLAININ! lol. And btw, ...didn't see my question, ...."You having Dark Chocolate Heavy Cream Caramel Withdraws yet?" hahahha. Also, what do you think of the raspberry drink? I sometimes put them together in a big glass....'FUSIONTASTIC!' HAHAHA.

The bulb thing threw me for a loop, cuz on the thread I found it some Yota Mechanic said, "we only sell 11.5 and 7w bulbs, so you have to find 3.4w test bulb like we have in the shop"...something like that. Being an electrician that you are...would a 3w work? Sorry bro, I'm just somewhat electronically inept! lol. Learning though! lol.

 

PS> Forgive me, but I do need to drain my oil before slapping that sender in with teflon, right? And, ....OEM only?(Again, sorry, I'm guessing I'd get slapped for asking that in person, hahaha)

Also, where is the coolant burp thingy, just so I can eliminate that COMPLETELY, lol. I have one of those prestone things in my heater hoses...but I'm guessing that's not the best one to use. I'm reading, trying to find it now.

 

All your oil is in the pan, below the sending unit boss- don't need to drain.

Coolant burp? Nope- easy way is to jack up the front end, high as you can and take the cap off the radiator. Any air will leak out- don't think that is your issue though. If there is air you will cavitate the water pump and heat up- that's not happening. your temp is right on.

A 3w bulb will be fine. I am betting the leak by is causing the drop, if it is just leaking at the threads- if it's getting through the sender internally well that's a pressure loss too. Either way, need to seal the threads or replace sender.

Use all the parts you got 1 at a time to eliminate the problem! Save the good stuff and make some coin back on flea-bay or fredslist.

 

HAHAHA, ....derrrr, yeah, that makes sense, ....above the pan, I'm good! Sorry Fleck, Just REALLY got a lot going on today, trying to keep up, mentally(seems to get harder and harder every year, hahaha).

Ok, I'm out of time today to really get out there, maybe later tonight, but have a party from 3-7 or so, then dinner here, but maybe, like I said, later tonight. I did clean up the throttle body today and the IACV message I texted you....???? Any thoughts?

Also, I got under there, tore off the skid plate and really looked around. For one, the fluid I'm seeing?....I THINK IT'S FROM THE FRONT AXLE, LOL. iT'S been leaking forEVERRRR, lol. I keep it full, but I think I just gotta keep it ful and let that alone for now. I smelt the fluid and it smells NOTHING like that Non-Detergent Dino, Flecker, know what I mean? That STANK like the oil is not there. The Oil Sender threads ARE oily, but I touched the bolt and housing of the unit, separately and didn't seem to find any oil, ....other than on the thread. I think the oil along the pan seam is just that, slowly leaking out from there.

Isn't it possible that the sender just go SO CLOGGED with crap that if finally stopped being able to contain the pressure, thus, because I don't have the threads tight enough(or sealed if necess.), it's leaking worse and showing low pressure?...Because it's not WORKING properly all the time?

Anway, off to do this party, and I have to tell ya, that whole oil pressure thing has me sitting put with it for now, sorry....just not worth the risk, just wanna be sure. I'll do all the necessary tests, etc., asap!

Thanks guys,

Mark

 

Alright, ........ I just came home around 7 from the gig and RAN out there to get on this oil pressure issue. GUESS WHAT?.....I will have to drive it a lengthier time than 10 minutes, idling 5 as well, to be sure, but I believe IT'S SOLVED!

Guys, I hope I've proven that I try my best to be thorough with directions, torquing things, .....and yet, 'crap happens' eh? I walked out to the garage, got underneath and reached up to re-check the torque on the Oil Pressure Sending Unit....IT WAS HAND LOOSE!!!!! I'm telling you guys, I tightened that thing with a 14 wrench to VERY snug and then a 1/4 turn more.....IT VIBRATED LOOSE OVER THE LAST-equivalent of- 100 MILES!!!! It must have really been leaking at times, when driving, then obviously stopped once I killed the motor and the oil drained down. HOLY CRAPOLI, my brotha's, ....I highly recommend checking that thing, periodically, ...I would guess, ESPECIALLY after a build, as pressure obviously increases and so on.

Then, possibly a coincidence(????), when I started it and got it idling, it went up to about 900, then eventually came down to 750 and seemed to stay there. It's still hiccuping and throwing that o2 code if I rev it above 1800rpm or so(Flecker can testify to this) every time, but as I drove around the block and reached full operational temp, ....it didn't seem to go above 850, and when I walked around and pushed back on the throttle linkage, ...it dropped to 750 and stayed there! WHAT THE HECKKKKKKKKK? Is it even possible that this progressive losing of oil pressure could have had something major to do with the trucks persistence in gradually idling up as it got fully warm?

I still have a sneaking suspicion that my throttle body is just simply beyond specs in regards to plate/play, ...and I'll double check that when I put the other one on, .....but seriously, why else would it back off in idle around 100 rpm when pressing back(closing fully) the Throttle Linkage?????? I will try to first adjust the stop screw according to 4Crawlers site, and we'll see. I think it has a lot to do with having cleaned about a 1/4 cup of BLACK GOO off the back/inner passage and vacuum ports of the Throttle body, causing the stop screw to be off in relation to where it was when it was all gooped up. It just seems logical to deduce that it would work the other way, ....LOWER idle than before. Oh well, that's what all this PRECIOUS FREE TIME IS FOR, ....RIGHT ALAN? hahaha!

Before I came inside, I made the mistake of thinking I could tackle the increasingly apparent IMPOSSIBILITY of managing the arduous task of "THE 92 TOY OIL CAP CONUNDRUM!" ..........but oh well, I just had to try....several hours later, ...here she is! ........



HAHAHAHA, ....Jerry, thanks, seriously, ...that post had me rolling for about 5 minutes ,and I've laughed about 3 times a day as it crosses my mind. Bless ya brother! lol....

Mark

PS> Also odd was the fact that when I took my oil cap off to add oil.....the grommet was TOTALLY SEIZED onto the ring where it seats! Guess the thing is going to pull pressure from wherever it can, eh???? hahaha