hey everyone. ive got a 91 4runner which i drove to Delaware a couple months back when it overheated. ridiculous knocking and wouldn't get 2 miles without overheating again. so i changed the engine with another 22re which i got for cheap! it ran very strong until i passed a guy in an eclipse going 40 in a 55 when i was late coming home from work. when i got it home it would idle at wherever it wanted to. anything between 1-3 grand and it is running crazy rich. it b lows black smoke out the exhaust just by reving it up. it keeps fowling plugs and is just not getting enough air or something. im getting less than 10 miles to the gallon in a 4 banger. definately not a good sign. i dont know what to do. PLEASE HELP!!!!!!!

 

Airflow meter or TPS for sure. Same problem with my 87, except it had the added benefit of heating the Cat to a lovely glowing red hot. Bad times.

 

how should i go about fixing it? im 17 and just want my truck to run right. its killing my wallet and my hard work on the swap doesnt seem to be paying off

 

i'd start on the TPS. that's what my 3.0 was doing and sure enough, i found that my TPS was out of calibration. a new one did the trick.

 

oh throttle position sensor? is that correct? do you suggest to buy a new one or adjust the old one? and where is this located?

 

TPS in on the throttle body which is bolted to the intake. Should be visible from the top. Sorta hard to get to, has two philip screws holding it in. black in color, 4-5 wires going to it.

I would figure out how to test it first before spending the $150 or so they want for a new one.

Do yourself a HUGE favor and get the FSM for your truck. It will pay for itself in about 10 seconds.

 

I would lean towards to airflow meter before the tps. make sure the door inside the AFM isn't stuck. Also..check your ground wire thats bolted to the intake...could be loose

 

thanks a bunch! i found it. where could i get the FSM?

 

from toyota

 

it seems to me that the sensor doesnt do anything at all at the moment. i unplugged it and started it up and there was no change after i plugged it back in while runnin. im pretty sure the door inside the AFM isnt stuck. ive checked before

 

ok. well if you have any buddies who have a similar truck you can try swapping your AFS with them. Sometimes they just go bad

 

i keep messing around with it but i dont think thats the problem. im just going to see if the TPS is bad.

 

you can also get the FSM from EBAY. You could also download the whole thing from techinfo.toyota.com for $30 or something like that. then just print it out and viola.