bb224

Hey guys, first post here.
So my 95 4runner blew a hole in the coolant bypass hose on the firewall side of the engine. I removed the Plenum and replaced the hose and now it will not run, it'll turn over and fire, run for a second or two make a backfire sound from the intake and die. I cant for the life of me figure out what ive moved or disconnected that would cause this. Any help is apprectiated. Its a 3.0 3vze(I believe)

Corey Barlow

Sounds like an air leak. Check the gasket between the intake and throttle body and make sure the intake is torqued down. If not those then go over the vaccum lines again

jimbyjimb

iTrader: (1)

I'm not familiar specifically with this engine but a vacuum hose (especially for a brake booster) unhooked will cause this as well as incorrectly hooking up spark plug wires.

wyoming9

iTrader: (1)

For what ever reason it seems the Circuit opening relay is dropping out.

Afm not hooked up or the connector is not plugged in correct bent pin , corroded etc

Enough air is being pulled in down stream the switch in the AFM is not able to close.

A crack in the air intake from taking it off from being old and brittle something else not installed correct.

bb224

Ok so what is the minimum amount of vac lines and intake components needed for this thing to at least start and run? Plenum and throttle body? Pcv valve hose? I figure if I can hook up the minimum and work backwards from there. Thanks to those that have answered so far I'll check those things first.

wyoming9

iTrader: (1)

You have to have the complete intake on from the air cleaner back.

There is a switch that closes in the Air Fuel Meter that enables the fuel pump circuit to turn on.

That is why having no leaks is important .

bb224

Ok, put big bulky air box stuff back on, with a repair to the flex hose at the throttle body. The truck started but smelled strongly of fuel. Removed air filter hose from throttle body and it was FULL of gas!! Not sure where it came from but something is definitely pouring fuel into the intake, air filter area

bb224

Is there supposed to be fuel coming from this hose with the line off?

bb224

That line seems to feed a reservoir under the afm and it's full of gas.

bb224

Is it possible that I got these two lines reversed?

bb224

Ok, so ive "hosed" it up pretty bad,(pun intended). I had one of the PS lines going to the fuel return!! Got that sorted, not sure how long the PS pump will last though. I need to know where the fuel return line and the AC idle up hoses go. Please Help

bb224

Got all the hoses back in the correct places! Whew! She blew smoke for about 10 minutes then cleared up. Anyone know what damage I might have caused? Have I ruined the PS pump?

Corey Barlow

Just flush it and add fresh fluid should good