Is there anyway to inspect it and see if its fried? I left my air cleaner assembly out in the open during some heavy rain we had here a while back. And im thinking my truck doesnt run cuz of this.

Would it make a huge enough difference to where it doesnt idle and just shuts off when disconnected/fried???

My engine is a 3VZE BTW if it makes any difference.

Help me out guys im getn ready to junk this damn thing

 

Its tough to check if its messed up but I just look down the center and inspect that little U wire and make sure its in tack, also spray some MAF cleaner. If that doesnt change anything then get out the DOVM and check the resistance. Its usually pretty obvious when they do go as the engine starts running like crap.

 

if it shuts off when you disconnect it, it means its working and doing SOMETHING. try spraying a little tiny bit of brake cleaner on the wires that you can see. if it runs better there ya go, it not its probably something else.

The hot wires of the MAF get coated in crap and trick the computer into thinking less air is going by causing your truck to really run like crap.

good luck

 

It might be a fuel problem I am having, but here is what's happening to me. When I hit the throttle slowly (22re btw) it revs up nicely. But when I stomp on the throttle quickly it kinda sputters. I notice the air box also begins to move around a lot when I stomp on it quickly. Could this be MAF?

 

possibly. try what I said to do.

 

ugh fak i just noticed i posted this in the wrong section. Meant for it to go in the 89-95 section.

Well i guess il try cleaning the connectors. and hope it works. Cuz if that dnt fix it ima have to see wtf else it could be.

That and ive noticed when i try to start the truck and i rev it, it wil stay on. but then itl shut off and white smoke starts coming out the intake chamber/TB and then fuel drips out the TB like crazy. and as soon as i let go of the gas itl shut off, or il get a fireball out the TB and it turns off.

Im extremely confused with all this.

 

I don't know. I think fuel is supposed to be re-introduced to the throttle body. Something to do with the evap or something. It is otherwise wasted fuel.
Don't run your truck without the intake and filter on. Who knows what could get sucked into the engine that way. Every time you take the intake pipe off you should put a rag in the tb opening.
I would check if anything on the entire truck/engine is missing.
Have you disturbed any gaskets on the intake side?

 

well i just replaced all the head gaskets, Exhaust, intake plenum, intake chamber, TB, No.2 timing idler, water pump, coolant bypass, and other misc gaskets. but i followed everything by the book and what ive read online from many sources.

Im at a loss as to what it could be.

 

ok well that throws a huge wrench into the problem. So basically you have touched everything on the upper half the motor and ran it with out the filter on it and now its not running right. Was it ever running right after you did the head gasgets? There is a lot that can go wrong on these motors when you open them up... have you double checked everything and done a compression test to make sure the gasget is seated correctally?

edit: and when i ment clean the wire i ment the hot wire inside the MAF, not the connector outside the MAF. actually spray brake cleaner inside the maf. When you look down it with a flash light you should see a metal piece hanging down with 2 or 3 tiny wires on it, clean those

 

usually a disconnected VAFM will mean no running. you can start it, it'll run for like .5 seconds or something, then just go out.

 

ya that is true...but if its running like crap and you pull the connector and it stalls it mean atleast the MAF is doing something. Then you can try cleaning it like i said and see how it goes from there. If it was totally wasted pulling the connector would make no change in the way it was running.

 

yea everything is right with the gaskets. all the timing marks are on point. I only ran pulled the intake hose off for the vid. I honestly dnt remember why. but yea.

Ima try cleaning the wires u said and see wat happens.

Im still wondering if water could have gotn into what ever electrical it has and fckd it up while it was sitting

 

yea so i cleaned the thing u guys said and it no worky. Would it be a good idea to turn the distributor a bit? and see if that does anything??

 

you should set your timing to spec, after you get it running then you can mess with the advance.

 

guess ima have to redo the timing for the fifth time

 

Could it be an intake valve seal?

 

I'm kinda having the same problem. After about 2 or 3 seconds the motor dies out. I believe it my MAF sensor. i got a thread on it in the 88 95 section. I need advice.

http://www.toyotaminis.com/forum/showthread.php?p=75091#post75091