4h won't engage and there is a knocking noise coming from the front end when I try. Truck had been sitting for awhile but otherwise seems to be running well.

what ports do you jump to get diagnostics for 93 Toyota T100

93 T100 looses power at 3000 rpm drives almost normal up to 2500 rpm then I have to feather throttle to maintain speed .

What are the steps to fix this myself. Thanks..

I had a starting issue with my 93 t100 3.0 v6 last week. Changed the fuel pump and then it started first crank every time. Ran great for a week and then yesterday it died on the freeway and would not start back up. Had it towed home, changed the fuel filter last night(thought it may have been clogged) and it still won't start. Went out first thing this morning to try to start it and it just turned over and wouldn't start. Crawled under the truck, hit the tank with a hammer, then turned the key over and it fired right up, ran good for about 30 seconds then died. Tried that process again and it will not start at all even if I hit the tank. Had someone turn the key over while I was under it and I couldn't hear the fuel pump. So I'm thinking maybe I have a faulty fuel pump or maybe a bad circut opening relay. Any input or advice would really be appreciated.

engine light stays on all the time

I love my work truck but it lacks powe when it get hot. Also the heat from the motor seems like its going inside the cab of the truck but it doesnt over heat the temp neddie does work it never goes passed the middle

I have had my 1993 toyota t100 for 6 years and just found out about the recall is there a time limit or can i still have them fix it. Or how does it work Thanks

I have been having an issue with my t100 not wanting to go into overdrive when regular driving or trying to pass into another lane. I can activate the overdrive manually at the gear shift with a press of a button but cannot activate it when pressing the gas petal to gain speed on hills and pulling my boat. Any clues on why? Thanks

Ok so my T100 is old 281967 miles on it
But I'd like to know. First off I manually shift this automatic transmission every where I go . Could it be a sensor , I've been doing this for 2 yrs now .Sometimes OD light blinks constantly
And when I get up to 55 it takes a looking time to shift into gear . Other times it shifts beautifully . Plz any ideas greatly appreciated :)

queation is...gosh do i need to remove all things attached , like fan etc??....truck is 2 wheel drive, standard transmission, 3.0 ... help please...

I was told by a mecahnic that my truck could last for 10 more days or another 20,000 miles it just depends. I recently just picked this truck up for 2500 dollars with a burnt out clutch and put a brand new clutch in it. I decided to sell my truck because i don't have the time or materials to put work into it. I put it up for 2,000 dollars and sold it for 1800. The guy is coming tomorrow to pick it up and i was wondering if i should of put it up for more. Everywhere i look it seems as if these trucks have a high value, so i was wondering how much value does my truck loose when this knocking starts? The truck is in great shape besides this.