2000 tundra

Hey guys I'm new here and got a question.
I got a 2000 tundra 4.7 4wd had about 6 years.
Jumped in the truck this morning to go to work and it started up fine, went in gear fine and when I hit the gas....nothing. rpm didn't move, truck didn't move, put my foot to the floor and nothing. Put it in reverse and it kind of slammed in gear, put back in drive and same thing. Truck would move forward and back as a normal truck would without touching the gas but that's it. I unhooked the battery for 30 min for a total reset but nothing changed and there isn't a check engine light in the truck (not since I bought it anyway)

 

Any codes? (check engine light)

If you step on the gas in park, do RPMs climb?

Hows the trans fluid level and fluid look?

You sure the truck is actually shifting into gear? (look at the linkage? EDIT: WITH P-BRAKE ENGAGED!!!!)

Have you verified the throttle cable is OK on/over the intake manifold and looped over the butterfly, there's no slack? (2000-2002 have one, I believe?)

It sounds like to me it's either (A) not actually shifting into gear, or you're shifting it and the trans isn't moving gears because not enough hydraulic fluid to do anything, or (B) stepping on the gas isn't actually opening up the throttle.

 

How’s the tranny fluid level? Is it too low? Is it burnt? That could be a possible reason.

Have you changed it since you owned it? How many miles have you put on the truck since the last change? If it hasn’t been changed, how many miles on it now?

Just trying to paint a more complete picture here.

 

Looks like @shifty’ beat me on the fluid question.

 

Sounds to me like you lost the throttle cable. Goes into gear, no increase in RPM, moves at idle.

 

It happend before about 2 years ago. Shut the truck off for 5 minutes and it worked fine after that. A year later the Trans acted up a few times in the span of a week, took it to my mechanic and he took the rad cap off and got blasted with Trans fluid. He replaced the radiator and trans fluid and said no coolant got back into the transmission, said it was a strong transmission. Everything has been working fine, shifts fine goes into R N D 1 2 3 all works fine. Even with this problem it still goes in gear cause it rolls forward in drive, rolls backwards in reverse, just not throttle response, no climb in rpm when I hit the gas and the owner before me must've pulled the check engine lite cause I've never seen one even when you turn the key before you start a vehicle. Mechanic thinks throttle body is the problem

 

May be a bad throttle position sensor. Do you have a copy of the field service manual? You could check it out yourself.

 

I don't. Any idea how ?

 

Link to download a copy is in the 4th or 5th paragraph of the megathread sticky: https://www.tundras.com/threads/so-you-wanna-buy-just-bought-a-1st-gen-tundra-eh.115928/

 

You ever heard of this issue before ?

 

Not from those posting here but it seems a reasonable place to look. Even your mechanic is suggesting it’s throttle related.

 

Thanks friend I'll start there. If it means anything he said theres no throttle cable it's electronic, if that means anything

 

You may want to find a new mechanic then. It most certainly exists and can be seen exiting its sheath, which goes across the top of your 4.7L V8 engine, here.

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Some troubleshooting and such exists here: https://www.tundras.com/threads/crackhead-resurrection.94083/page-66#post-2875986

But check the cable is exiting where I'm showing, and that it's taught, and it should be wrapped around the black circulat thing in between my arrow and the orange-taped bundle of wires shown in that last pic.

Your mechanic is right, that cable doesn't exist in later-model 1st gens. It absolutely does in the earlier years. I believe when stepping on the pedal, you should be seeing that assembly move. Got a friend to do it while you watch? If it moves but nothing happens, it may be the throttle assembly is borked, unplugged, has a bad connection, bent pin, ????

 

Thanks I appreciate all the advice. I'll let you know how it turns out.

 

I'm talking outside my actual knowledge here, but...

I was just watching a video about throttle body cleaning. The guy has an '02, like me. He showed the throttle cable, which I also have. But he said if you push the gas pedal, you won't see the cable move, or the butterfly valve open. There's a mechanical cable, but it's not connected to the gas pedal. Gas pedal is connected to something electronic, which then communicates to the throttle to pull the cable and open.

In the case that the above story isn't complete BS, it sounds like there's a breakdown in the communication between the gas pedal electronics, and the throttle cable in the OP's truck.

I haven't physically tested this on my truck, to confirm that when I push the gas pedal, that cable doesn't pull the butterfly valve open. Guy in the video posts a lot of videos of his work on his Tundra so I just assumed he was right. But we know how dangerous that can be...

 

The cable tells the engine how much throttle you want, then the computer & electric motor on the throttle body team up & decide how much throttle its gonna give you.

my memory isnt what it oughtta be, but i'm pretty sure i've seen that cable move with the truck off & my brother fondling the pedal.

 

Got it, and yes, I believe you guys are right. But I don't think I'm wrong either: When OP steps on the pedal, with the engine running, I'm fairly certain that cable should respond. If not, that's a great symptom to start with.

But the FSM download is critical and OP should probably start there.

 

Nope, crack smokin. At least on an '02. I set my camera facing the throttle cable where it connects to the throttle body. Started video. Pumped gas. No keys in ignition. Throttle cable moved. Video guy statement = BS

 

Mine moves with pedal

 

From what I recall others have said in the past is that the throttle cable is for limp mode operation only. The throttle plate is still motor actuated. I haven’t verified it myself.