jgs9455

I have a 2000 V6 4Runner SR5 with 57,000mi. For awhile now, it seems like it will hesitate a little when I accelerate hard from a stop in traffic. Well a couple weeks ago it actually hesitated real bad and stalled. When I put it back in park it started right up. I have no issues when cold starting, and had a tune-up a couple months ago at the dealer. A year before that the dealer put a new battery in. The tach at idle seemed kind of up and down too.

I took it to the dealer two weeks ago because of the hesitate/stall and had them look at it. It was a Saturday, and they said it did not hesitate or stall for them at all. They went ahead and cleaned the MAF, did a fuel injector cleaning, oil change, and did a tranny flush. I had them replace the fuel filter even though they did not recommend it. Seemed to smooth out the idle and it ran fine for a couple of weeks...or so I thought.

Damn thing stalled out again this morning when I was stopped in traffic and I gave it some gas. It started right up again and I made it to work. I don't want to be that JA stuck on the side of the road in rush hour traffic! Any other ideas?? I've been running premium gas and that has not made a difference. Electrical? Fuel pump? Did the dealer mess something up or forget something during the tune-up? I have another dealer appointment this Saturday. Please help!!

d0ubledown

subscribing. my buddy's 00 does exactly the same thing, although not a hard start off the line, but a crawl..like in rush hour traffic. it has stalled occasionally, most is 5X in a day.

he also did the same things as you at the dealership (cept tranny flush). they're also weird up here re: fuel filter replacement. they wouldnt even sell him one to replace himself. he's also checked plugs, coils, electrical..etc. still sputters at a stop & bogs on launch...

jgs9455

Well mine stalled when I was at a crawl in traffic, too. It's almost as if I take my foot of the brake, let the truck move on it's own at idle, and then I can give it some gas. It I try to give it a little gas right away, sputter sputter. But not all the time!! Arrgh.

Before anyone says it, I have used the search. I ran Seafoam a couple of months ago before having the tuneup. I don't think I had this problem before the tune up. I haven't checked the plugs and coils myself because I thought the dealer would do that. I want them to check the codes, wires & plugs, throttle body, Idle Air Control valve, PCV valve, and vaccum lines. Anything else? I do not have a Check Engine Light.

MTL_4runner

Have you guys checked the TPS?
If not, you should.

fillsrunner4

I believe a TPS would throw a code being its a sensor and it goes to the ECU. I would definetly check the plugs and change them. Its quick, easy and cheap to do.

BruceTS

You could have gotten a bad tank of gas, I'd probably think about replacing the fuel filter as well.

MTL_4runner

It certianly can throw a code (like P0120 or P0121), but by no means does it always.
.....especially if it is intermittent as mentioned above.

Very easy to check and eliminate as a potential problem early.

The fact that it was fine before the tuneup and had issues after could give more clues.
You definately also want to check plugs, wires, IAC, throttle body and fuel filter.

kevin444

i would


change the fuel filter, run some bg44k, and seafoam it.

bwhyit

check to see what type of plugs and wires they installed. You would think the dealer would use Yota plug and wires but I've seen otherwise.

Another thing, do you have any aftermarket access on the runner? Anything???. I've seen some weird problems related to add ons and bad grounding.

atl4runner

this has also happened to me in the same type of way..ill be at a slow crawl and llet off the gas and try to crawl again and itlls putter and stall..

jgs9455

I had them replace the fuel filter two weeks ago. I have a aftermarket stereo and that's it. What is the TPS? I'll have them double check the plugs and wires (I'll make sure they are yota), and also have them check the IAC and throttle body. Also verify it's not throwing any codes.

TRDatVT

I have had the same problem before... Think it might be somn to do with the fuel pump. I seeme to remember not having a problem until after that. I have done plugs, wires, MAF cleaning, seafoam, fuel filter and all sorts of stuff. Can't figure it out.

Rick F.

Dayum! My '00 has been doing the same thing except for the stalling. Either from a stop or rolling, if you goose it she'll hesitate/sputter for a brief second. I haven't been driving much the past few weeks and I have fuel system cleaner in the tank. I was waiting to run the tank down and refill with fresh fuel to see if it would still occur but after reading the above, I'm not too hopeful.

Chapman88SR5

Same problem on my 88! It really sucks we need to figure it out.

mastacox

x3 on the Throttle Position Sensor. Just because it doesn't throw a code doesn't mean it is fine. Checking the resistance at the ends of travel might not tell you anything either, because I have heard of ones going bad in the middle of their travel. I say buy a TPS from trdparts4u (its only like 35 bucks) and put it in yourself. See what happens.

Chapman88SR5

anywhere i can but a TPS for an 88?

mastacox

Might as well check www.trdparts4u.com (Toyota of Dallas). Might just give them a call if you have trouble finding it on the website. I have to say though, the TPS units on the 3.0's aren't really know for going bad all the time, unlike for the 3.4 engine.

Chapman88SR5

Does the TPS control idle? if not what is the screw you have to turn to raise or lower the idle?

mastacox

No, it helps the engine guess how much fuel to put in the engine when you gas it. That screw adjusts how much air (and subsequently fuel in closed-loop idle) is being let into the engine at idle I think.

jgs9455

I'm at work and can't really search, but is there a write up somewhere on how to replace the TPS?