1986 Toyota 4 runner starting issues

[Lemacxus]

Hey guys what's up. I'm new to this forum thing. So sorry if this has already been talked about.

I have a 1986 Toyota 4Runner. 22re 2.4l
I've been working on it for over a year now. I go full time to work and school and don't always have the time to work on it. When I first started working on it, had a bad transmission and a faulty fuel pump. I swapped a gas tank from another 86 t4r. And got another tranny to put it. Before I put the transmission in I got it running with the swapped gas tank and fuel pump but had to keep it revved or to would die out. I eventually got it to my house where id install the new tyranny. Eventually I got the new tranny in while also replacing the EFI. While I did that I also replaced the fuel filter(brand new) and took injectors from another truck of ours and installed those since I couldn't keep it going without me giving it has. Also replaced oil, coolant/hoses, drive belts and a valve cover gasket.


I've drained out the gas and put in a couple gallons of v power and some fuel system cleaner to unclog the fuel system as much as possible.
Now I've been trying to start it and it cranks and fires but dies after a second or two. I hear the fuel pump activated but I'm not sure what to check next. I'm not sure if maybe the new EFI I put on is messing up the idle because of the throttle body adjustment or maybe the injectors I swapped are bad.

Let me know what you think or any advise. Thanks guys

 

[TacoRunner13]

have you cleaned out the throttle body?

 

[Lemacxus]

No I have not. Should I just get some carb cleaner and try and get as much out as possible either with a brush or just spray. I know you shouldn't be spraying to much into the intake.

 

[BigBluePile]

Sounds like a TPS or AFM issue

 

[Pisa 8687]

My 87 did the same thing. Check the 90degree elbow that is connected the throtal body. Mine had a crack in one of the ribs and it was letting just enough air to screw it all up. I wraped it in duct tape and it fired right up.

 

[Lemacxus]

Ok thanks. The throttle body looks all gummed up and dirty. I am going to pop the intake off clean it thoroughly. Also I'm gonna do some resistance checks on the injectors while I'm at it. I'll let you know how it goes. Thanks guys

 

[RAD4Runner]

I have a 1986 Toyota 4Runner. 22re 2.4l
...it cranks and fires but dies after a second or two... I hear the fuel pump activated...

Does combustion continue as long as you have ignition in START position? Does it die only when you release IG key (back to ON position)?
Then possibly AFM or circuit opening relay (below); Cranking circuit powers coil 1 when key is in start position, but AFM is not grounding coil 2 when key is released. OR coil 2 is bad.

Jump these terminals and see if fuel pump keeps and working even when you release IGN key:

Here's how C.O.R. works.

 

[Lemacxus]

I have cleaned out the throttle body and did some checks. All injectors are showing 2.3 ohms of resistance and I am getting power to the connectors. I put it back together and tried starting it same thing. Fires a little better but shuts off. I am going to test the coils and the fuel pump connector and see what happens. When I do that what should I look for. Also I was looking at the efi I had profanely and comparing it to the one I have on it now and it is slightly different. Just with the throttle cable and where it hooks up.

 

[Lemacxus]

Ok so here is what I have so far.
I checked the fuel injectors. And they are in spec.
Coils are good. Throttle body is clean. I hooked up a multi meter to the tps and I was getting resistance readings. It looks to be adjusted to the correct angle.
Today while my brother was helping me. It cranked and ran for much longer then it ever has. Not that it ran for long. Also I can here a clicking noise from the air flow meter on the top of the air box. Could this be causing anything. Since I know I am getting spark and fuel I feel like air is causing it to mess up. I know I am getting fuel pumping and through the lines because I've checked at the fuel filter lines and fuel is flowing through them. Since I swapped injectors from another truck do you think they could be causing it to not run because their clogged up ??

Let me know what you think. Thanks

 

[mtnboy5602]

same issue

I have the same issue and on the same year ran fine when i tore down intake to fix oil leak. put back together and doing samething as yours repalced fuel pressuer reg and pump ect. did you find out what issue was