stalling 4 runner at the end of my rope help please

[okazakisho]

i have a 98 4runner 3.4 v-6 with a trd super charger gen 1 blower this problem has been getting worst by the day . when ever i start my truck and put it into gear and step on the gas it stalls and boggs out if i hold my foot down it will pick up speed and then kick in like there is no problem.in the begining it woulkd do this bullshit only when i started then it started doing it all the time once in a while it would run right as rain then just like that it would take a dive back to fustration. I have changed plug wires spark plugs coil pack csan the tps, vsv, maf,o2, fuel pressure,checked ivs waste gate,Anybody eles have the same problem??

 

[GA-4RUNNER]

Is there a check engine light and or codes? Even if the light isn't on did you checked to see if there were any stored codes? Why did you put the before mentioned parts into it? Sounds like you have some sort of vacuum leak to me. It's weird because it comes and goes. I would start by checking all vacuum lines. That's the cheapest way to start from here.

 

[Ol'Blue]

What was the fuel pressure running at? I was going to say look at the MAF Sensor but you have changed that already. If this keeps happening what I would say is to put this little guy on it and record all the data from the computer for further diag. Look for any OBD and that will tell you about everything you could ever want to know. I can't think of the one we have at work but it was like 100 bucks. We have put it in customers car for a week and then brought them back and ran it on the graphs and computer to see the issue. Normally after that it is all in the bag.

Blue

 

[runner823]

i have a 98 4runner 3.4 v-6 with a trd super charger gen 1 blower this problem has been getting worst by the day . when ever i start my truck and put it into gear and step on the gas it stalls and boggs out if i hold my foot down it will pick up speed and then kick in like there is no problem.in the begining it woulkd do this bullshit only when i started then it started doing it all the time once in a while it would run right as rain then just like that it would take a dive back to fustration. I have changed plug wires spark plugs coil pack csan the tps, vsv, maf,o2, fuel pressure,checked ivs waste gate,Anybody eles have the same problem??

Sorry. But, I just have to say this.. It's pretty stupid to buy all of those parts after parts when it's obvious u have no clue to what u r doing. You could have taken it to the dealer and you could have spent less, a lot less.

 

[Dee3]

Yup. It's gotta be the TRD... I'll take the supercharger off your hands before it gets any worse. I'll even ship out my old intake manifold to bolt on with a deck plate intake.. No stalling Nah, could be a S/C problem but that's not anything I'd be familiar with. Sounds like you are on the right track to a rebuild though, guess if you buy enough parts you'll figure it out. Good luck..

 

[technodrive]

have you run a compression test?

 

[TakeitApart]

Check the bypass valve and the vacuum line to it. It sounds like it's always trying to boost and it'll stall it out at low rpms without demand for power.