1fz-fe Misfire/stumbles in when put into gear! (5 Viewers)

[Dudemanslick]

I have a 1993 LC , after the parts cannon, the truck seems to idle FiNe when in park and even rev up smooth, but as soon as I put the truck in drive/reverse etc. It stumbles and hiccups, almost dies. Parts replaced are:
Dizzy
Dizzy cap
Button
Plug wires
Plugs
Coil pack
Fuel filter+reg. + pump
Cleaned injectors
Grounds are fine..
I'm down to the ignitor (as it supposed to send a high voltage signal to the coil pack)... can somebody point me in the right direction...?

 

[cruiserdan]

Check the air intake hose for cracks.

 

[Dudemanslick]

Check the air intake hose for cracks.

They all seem good but i think I'm gonna have to look REAL CLOSE!! I have heard about 3 or 4 times that it sounds vacuum related..., I will re-inspect all the hoses.

 

[Dudemanslick]

Sorry my reply is listed as if you said it lol...im new to this forum..bare with me

 

[voodu3]

Do you get a Check engine or a flashing OD light when you put in gear?

 

[Dudemanslick]

Do you get a Check engine or a flashing OD light when you put in gear?

No the check engine light wont stick, itll flash as you fumble into 200 rpm tho lol

 

[TheRealDeal124]

Have you replaced all the vacuum lines?

 

[Dudemanslick]

Have you replaced all the vacuum lines?

Smh...man..nah...this truck was just running...I didn't want to jump into complete overhaul just yet i was born in 1992...maybe this vacuum line thing is more major than I realized....I sprayed some carb/choke cleanr around to idle take plenum and around the hoses in sight but I didn't hear any changes ....

 

[AussieHJCruza]

If you don't know when the vacuum lines and intake hose were last replaced, it's a fairly cheap and easy (albeit time consuming) thing to rule out. Throw a new air filter in while you've got it apart.
It's much more likely to be vacuum related than fuel or ignition.

 

[Mat Jadamec]

O2 sensors?

 

[ajax1]

How’s the timing as well?

 

[Outsane]

Check the battery voltage

 

[Mighty Mouse]

Dudemanslick I've had the same trouble with my 94 Cruiser. It's been unsolvable for over three months. Same symptoms, when I put it in Drive and try to move forward, it stumbles, seems like it's really lean while stumbling and after a couple blocks, it throws a code 52 Knock Sensor code. The Knock Sensor, I replaced with the expensive $250 OEM part. The shielded wire is intact, and I have continuity to the ECU. My list of things I've replaced or done includes all the things you have done, and then a LOT more.

I'm frustrated and frankly, I've given up as me and two other Land Cruiser Mechanics can't figure it out as well.

Wish you well, and if you get ideas that seem to help, please let me know.